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• Secure ldap problem

  - by neverland

  Hi there, I have tried to config my openldap to have secure connection by using openssl on Debian5. By the way, I got trouble during the below command. ldap:/etc/ldap# slapd -h 'ldap:// ldaps://' -d1 >>> slap_listener(ldaps://) connection_get(15): got connid=7 connection_read(15): checking for input on id=7 connection_get(15): got connid=7 connection_read(15): checking for input on id=7 connection_get(15): got connid=7 connection_read(15): checking for input on id=7 connection_get(15): got connid=7 connection_read(15): checking for input on id=7 connection_read(15): unable to get TLS client DN, error=49 id=7 connection_get(15): got connid=7 connection_read(15): checking for input on id=7 ber_get_next ber_get_next on fd 15 failed errno=0 (Success) connection_closing: readying conn=7 sd=15 for close connection_close: conn=7 sd=15 Then I have search for "unable to get TLS client DN, error=49 id=7" but it seems no where has a good solution to this yet. Please help. Thanks # Well, I try to fix something to get it work but now I got this ldap:~# slapd -d 256 -f /etc/openldap/slapd.conf @(#) $OpenLDAP: slapd 2.4.11 (Nov 26 2009 09:17:06) $ root@SD6-Casa:/tmp/buildd/openldap-2.4.11/debian/build/servers/slapd could not stat config file "/etc/openldap/slapd.conf": No such file or directory (2) slapd stopped. connections_destroy: nothing to destroy. What should I do now? log : ldap:~# /etc/init.d/slapd start Starting OpenLDAP: slapd - failed. The operation failed but no output was produced. For hints on what went wrong please refer to the system's logfiles (e.g. /var/log/syslog) or try running the daemon in Debug mode like via "slapd -d 16383" (warning: this will create copious output). Below, you can find the command line options used by this script to run slapd. Do not forget to specify those options if you want to look to debugging output: slapd -h 'ldaps:///' -g openldap -u openldap -f /etc/ldap/slapd.conf ldap:~# tail /var/log/messages Feb 8 16:53:27 ldap kernel: [ 123.582757] intel8x0_measure_ac97_clock: measured 57614 usecs Feb 8 16:53:27 ldap kernel: [ 123.582801] intel8x0: measured clock 172041 rejected Feb 8 16:53:27 ldap kernel: [ 123.582825] intel8x0: clocking to 48000 Feb 8 16:53:27 ldap kernel: [ 131.469687] Adding 240932k swap on /dev/hda5. Priority:-1 extents:1 across:240932k Feb 8 16:53:27 ldap kernel: [ 133.432131] EXT3 FS on hda1, internal journal Feb 8 16:53:27 ldap kernel: [ 135.478218] loop: module loaded Feb 8 16:53:27 ldap kernel: [ 141.348104] eth0: link up, 100Mbps, full-duplex Feb 8 16:53:27 ldap rsyslogd: [origin software="rsyslogd" swVersion="3.18.6" x-pid="1705" x-info="http://www.rsyslog.com"] restart Feb 8 16:53:34 ldap kernel: [ 159.217171] NET: Registered protocol family 10 Feb 8 16:53:34 ldap kernel: [ 159.220083] lo: Disabled Privacy Extensions

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• sendmail on ubuntu (9.10) machine "stopped" sending mail

  - by Doron

  I'm developing on my ubuntu 9.10 machine for the web (php). I'm using it sendmail for sending mails, and while developing on my local machine, I send local mails (to my user 'doron'). Up until a few days ago, I was able to send mails both from php's mail() function, and from the command line using the mail command. I'm using sendmail with mailutils. Since the last few days, it seems like it stopped working. When I try to send mail from the command line, I get the following in my syslog (and mail.info, and mail.log): Mar 3 13:27:58 doron-desktop sendmail[4693]: o23BRwlA004693: from=doron, size=84, class=0, nrcpts=1, msgid=<201003031127.o23BRwlA004693@doron-desktop.>, relay=doron@localhost Mar 3 13:27:58 doron-desktop sm-mta[4694]: o23BRwtQ004694: ruleset=check_rcpt, arg1=<doron@doron-desktop>, relay=localhost [127.0.0.1], reject=553 5.1.8 <doron@doron-desktop>... Domain of sender address doron@doron-desktop does not exist Mar 3 13:27:58 doron-desktop sendmail[4693]: o23BRwlA004693: to=<doron@doron-desktop>, ctladdr=doron (1000/1000), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30084, relay=[127.0.0.1] [127.0.0.1], dsn=5.1.8, stat=User unknown Mar 3 13:27:58 doron-desktop sm-mta[4694]: o23BRwtQ004694: from=<doron@doron-desktop>, size=84, class=0, nrcpts=0, proto=ESMTP, daemon=MTA-v4, relay=localhost [127.0.0.1] Trying to telnet locally to port 25 results in the following (same output for doron@doron-desktop): doron@doron-desktop:/var/mail$ telnet localhost 25 Trying ::1... Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 doron-desktop. ESMTP Sendmail 8.14.3/8.14.3/Debian-9ubuntu1; Wed, 3 Mar 2010 13:26:06 +0200; (No UCE/UBE) logging access from: localhost(OK)-localhost [127.0.0.1] helo localhost 250 doron-desktop. Hello localhost [127.0.0.1], pleased to meet you mail from: doron@localhost 250 2.1.0 doron@localhost... Sender ok rcpt to: root@localhost 553 5.1.8 root@localhost... Domain of sender address doron@doron-desktop does not exist However - if I do the same, but use [email protected] in the mail from field, I get: 250 2.1.5 root... Recipient ok My /etc/hosts file: 127.0.0.1 localhost 127.0.1.1 doron-desktop doron-desktop. (If I don't have the "doron-desktop." (with the ending dot), the mail command takes a lot of time (around 30 seconds) until it responds, but the results are the same.)

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• sendmail on ubuntu (9.10) machine "stopped" sending mail

  - by Doron

  I'm developing on my ubuntu 9.10 machine for the web (php). I'm using it sendmail for sending mails, and while developing on my local machine, I send local mails (to my user 'doron'). Up until a few days ago, I was able to send mails both from php's mail() function, and from the command line using the mail command. I'm using sendmail with mailutils. Since the last few days, it seems like it stopped working. When I try to send mail from the command line, I get the following in my syslog (and mail.info, and mail.log): Mar 3 13:27:58 doron-desktop sendmail[4693]: o23BRwlA004693: from=doron, size=84, class=0, nrcpts=1, msgid=<201003031127.o23BRwlA004693@doron-desktop.>, relay=doron@localhost Mar 3 13:27:58 doron-desktop sm-mta[4694]: o23BRwtQ004694: ruleset=check_rcpt, arg1=<doron@doron-desktop>, relay=localhost [127.0.0.1], reject=553 5.1.8 <doron@doron-desktop>... Domain of sender address doron@doron-desktop does not exist Mar 3 13:27:58 doron-desktop sendmail[4693]: o23BRwlA004693: to=<doron@doron-desktop>, ctladdr=doron (1000/1000), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30084, relay=[127.0.0.1] [127.0.0.1], dsn=5.1.8, stat=User unknown Mar 3 13:27:58 doron-desktop sm-mta[4694]: o23BRwtQ004694: from=<doron@doron-desktop>, size=84, class=0, nrcpts=0, proto=ESMTP, daemon=MTA-v4, relay=localhost [127.0.0.1] Trying to telnet locally to port 25 results in the following (same output for doron@doron-desktop): doron@doron-desktop:/var/mail$ telnet localhost 25 Trying ::1... Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 doron-desktop. ESMTP Sendmail 8.14.3/8.14.3/Debian-9ubuntu1; Wed, 3 Mar 2010 13:26:06 +0200; (No UCE/UBE) logging access from: localhost(OK)-localhost [127.0.0.1] helo localhost 250 doron-desktop. Hello localhost [127.0.0.1], pleased to meet you mail from: doron@localhost 250 2.1.0 doron@localhost... Sender ok rcpt to: root@localhost 553 5.1.8 root@localhost... Domain of sender address doron@doron-desktop does not exist However - if I do the same, but use [email protected] in the mail from field, I get: 250 2.1.5 root... Recipient ok My /etc/hosts file: 127.0.0.1 localhost 127.0.1.1 doron-desktop doron-desktop. (If I don't have the "doron-desktop." (with the ending dot), the mail command takes a lot of time (around 30 seconds) until it responds, but the results are the same.)

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• Make error in installing Math support for MediaWiki

  - by Masi

  How can you solve the following Make error in installing MediaWiki? ... /local/lib/site_perl . /etc/perl /usr/local/lib/perl/5.10.0 /usr/local/share/perl/5.10.0 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10 /usr/share/perl/5.10 /usr/local/lib/site_perl .) at t/maint/php-tag.t line 8. BEGIN failed--compilation aborted at t/maint/php-tag.t line 8. # Looks like your test died before it could output anything. t/maint/php-tag..........dubious Test returned status 255 (wstat 65280, 0xff00) t/maint/unix-newlines....ok Failed Test Stat Wstat Total Fail List of Failed ------------------------------------------------------------------------------- t/00-test.t 127 32512 ?? ?? ?? t/inc/Database.t 127 32512 ?? ?? ?? t/inc/Global.t 127 32512 ?? ?? ?? t/inc/IP.t 127 32512 ?? ?? ?? t/inc/ImageFunctions.t 127 32512 ?? ?? ?? t/inc/Language.t 127 32512 ?? ?? ?? t/inc/Licenses.t 127 32512 ?? ?? ?? t/inc/LocalFile.t 127 32512 ?? ?? ?? t/inc/Parser.t 127 32512 ?? ?? ?? t/inc/Revision.t 127 32512 ?? ?? ?? t/inc/Sanitizer.t 127 32512 ?? ?? ?? t/inc/Search.t 127 32512 ?? ?? ?? t/inc/Title.t 127 32512 ?? ?? ?? t/inc/Xml.t 127 32512 ?? ?? ?? t/maint/php-lint.t 254 65024 966 966 1-966 t/maint/php-tag.t 255 65280 ?? ?? ?? Failed 16/19 test scripts. 966/4248 subtests failed. Files=19, Tests=4248, 46 wallclock secs (33.15 cusr + 10.38 csys = 43.53 CPU) Failed 16/19 test programs. 966/4248 subtests failed. make: *** [test] Error 255

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• Is it reasonable that a random disk seek & read costs ~16ms?

  - by fzhang

  I am frustrated about the latency of random reading from a non-ssd disk. Based on results from following test program, it speeds ~16 ms for a random read of just 512 bytes without help of os cache. I tried changing 512 to larger values, such as 25k, and the latency did not increase as much. I guess it is because the disk seek dominates the time. I understand that random reading is inherently slow, but just want to be sure that ~16ms is reasonable, even for non-ssd disk. #include <sys/stat.h> #include <sys/time.h> #include <sys/types.h> #include <sys/unistd.h> #include <fcntl.h> #include <limits.h> #include <stdio.h> #include <string.h> int main(int argc, char** argv) { int fd = open(argv[1], O_RDONLY); if (fd < 0) { fprintf(stderr, "Failed open %s\n", argv[1]); return -1; } const size_t count = 512; const off_t offset = 25990611 / 2; char buffer[count] = { '\0' }; struct timeval start_time; gettimeofday(&start_time, NULL); off_t ret = lseek(fd, offset, SEEK_SET); if (ret != offset) { perror("lseek error"); close(fd); return -1; } ret = read(fd, buffer, count); if (ret != count) { fprintf(stderr, "Failed reading all: %ld\n", ret); close(fd); return -1; } struct timeval end_time; gettimeofday(&end_time, NULL); printf("tv_sec: %ld, tv_usec: %ld\n", end_time.tv_sec - start_time.tv_sec, end_time.tv_usec - start_time.tv_usec); close(fd); return 0; }

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• chrooting user causes "connection closed" message when using sftp

  - by George Reith

  First off I am a linux newbie so please don't assume much knowledge. I am using CentOS 5.8 (final) and using OpenSSH version 5.8p1. I have made a user playwithbits and I am attempting to chroot them to the directory home/nginx/domains/playwithbits/public I am using the following match statement in my sshd_config file: Match group web-root-locked ChrootDirectory /home/nginx/domains/%u/public X11Forwarding no AllowTcpForwarding no ForceCommand /usr/libexec/openssh/sftp-server # id playwithbits returns: uid=504(playwithbits) gid=504(playwithbits) groups=504(playwithbits),507(web-root-locked) I have changed the user's home directory to: home/nginx/domains/playwithbits/public Now when I attempt to sftp in with this user I instantly get the message: connection closed Does anyone know what I am doing wrong? Edit: Following advice from @Dennis Williamson I have connected in debug mode (I think... correct me if I'm wrong). I have made a bit of progress by using chmod to set permissions recursively of all files in the directly to 700. Now I get the following messages when I attempt to log on (still connection refused): Connection from [My ip address] port 38737 debug1: Client protocol version 2.0; client software version OpenSSH_5.6 debug1: match: OpenSSH_5.6 pat OpenSSH* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.8 debug1: permanently_set_uid: 74/74 debug1: list_hostkey_types: ssh-rsa,ssh-dss debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: client->server aes128-ctr hmac-md5 none debug1: kex: server->client aes128-ctr hmac-md5 none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST received debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: KEX done debug1: userauth-request for user playwithbits service ssh-connection method none debug1: attempt 0 failures 0 debug1: user playwithbits matched group list web-root-locked at line 91 debug1: PAM: initializing for "playwithbits" debug1: PAM: setting PAM_RHOST to [My host info] debug1: PAM: setting PAM_TTY to "ssh" debug1: userauth-request for user playwithbits service ssh-connection method password debug1: attempt 1 failures 0 debug1: PAM: password authentication accepted for playwithbits debug1: do_pam_account: called Accepted password for playwithbits from [My ip address] port 38737 ssh2 debug1: monitor_child_preauth: playwithbits has been authenticated by privileged process debug1: SELinux support disabled debug1: PAM: establishing credentials User child is on pid 3942 debug1: PAM: establishing credentials Changed root directory to "/home/nginx/domains/playwithbits/public" debug1: permanently_set_uid: 504/504 debug1: Entering interactive session for SSH2. debug1: server_init_dispatch_20 debug1: server_input_channel_open: ctype session rchan 0 win 2097152 max 32768 debug1: input_session_request debug1: channel 0: new [server-session] debug1: session_new: session 0 debug1: session_open: channel 0 debug1: session_open: session 0: link with channel 0 debug1: server_input_channel_open: confirm session debug1: server_input_global_request: rtype [email protected] want_reply 0 debug1: server_input_channel_req: channel 0 request env reply 0 debug1: session_by_channel: session 0 channel 0 debug1: session_input_channel_req: session 0 req env debug1: server_input_channel_req: channel 0 request subsystem reply 1 debug1: session_by_channel: session 0 channel 0 debug1: session_input_channel_req: session 0 req subsystem subsystem request for sftp by user playwithbits debug1: subsystem: cannot stat /usr/libexec/openssh/sftp-server: Permission denied debug1: subsystem: exec() /usr/libexec/openssh/sftp-server debug1: Forced command (config) '/usr/libexec/openssh/sftp-server' debug1: session_new: session 0 debug1: Received SIGCHLD. debug1: session_by_pid: pid 3943 debug1: session_exit_message: session 0 channel 0 pid 3943 debug1: session_exit_message: release channel 0 debug1: session_by_channel: session 0 channel 0 debug1: session_close_by_channel: channel 0 child 0 debug1: session_close: session 0 pid 0 debug1: channel 0: free: server-session, nchannels 1 Received disconnect from [My ip address]: 11: disconnected by user debug1: do_cleanup debug1: do_cleanup debug1: PAM: cleanup debug1: PAM: closing session debug1: PAM: deleting credentials

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• APC File Cache not working but user cache is fine

  - by danishgoel

  I have just got a VPS (with cPanel/WHM) to test what gains i could get in my application with using apc file cache AND user cache. So firstly I got the PHP 5.3 compiled in as a DSO (apache module). Then installed APC via PECL through SSH. (First I tried with WHM Module installer, it also had the same problem, so I tried it via ssh) All seemed fine and phpinfo showed apc loaded and enabled. Then I checked with apc.php. All seemed OK But as I started testing my php application, the stats in apc for File Cache Information state: Cached Files 0 ( 0.0 Bytes) Hits 1 Misses 0 Request Rate (hits, misses) 0.00 cache requests/second Hit Rate 0.00 cache requests/second Miss Rate 0.00 cache requests/second Insert Rate 0.00 cache requests/second Cache full count 0 Which meant no PHP files were being cached, even though I had browsed through over 10 PHP files having multiple includes. So there must have been some Cached Files. But the user cache is functioning fine. User Cache Information Cached Variables 0 ( 0.0 Bytes) Hits 1000 Misses 1000 Request Rate (hits, misses) 0.84 cache requests/second Hit Rate 0.42 cache requests/second Miss Rate 0.42 cache requests/second Insert Rate 0.84 cache requests/second Cache full count 0 Its actually from an APC caching test script which tries to retrieve and store 1000 entries and gives me the times. A sort of simple benchmark. Can anyone help me here. Even though apc.cache_by_default = 1, no php files are being cached. This is my apc config Runtime Settings apc.cache_by_default 1 apc.canonicalize 1 apc.coredump_unmap 0 apc.enable_cli 0 apc.enabled 1 apc.file_md5 0 apc.file_update_protection 2 apc.filters apc.gc_ttl 3600 apc.include_once_override 0 apc.lazy_classes 0 apc.lazy_functions 0 apc.max_file_size 1M apc.mmap_file_mask apc.num_files_hint 1000 apc.preload_path apc.report_autofilter 0 apc.rfc1867 0 apc.rfc1867_freq 0 apc.rfc1867_name APC_UPLOAD_PROGRESS apc.rfc1867_prefix upload_ apc.rfc1867_ttl 3600 apc.serializer default apc.shm_segments 1 apc.shm_size 32M apc.slam_defense 1 apc.stat 1 apc.stat_ctime 0 apc.ttl 0 apc.use_request_time 1 apc.user_entries_hint 4096 apc.user_ttl 0 apc.write_lock 1 Also most php files are under 20KB, thus, apc.max_file_size = 1M is not the cause. I have also tried using 'apc_compile_file ' to force some files into opcode cache with no luck. I have also re-installed APC with Debugging enabled, but nothing shows in the error_log I have also tried setting mmap_file_mask to /dev/zero and /tmp/apc.xxxxxx, i have also set /tmp permissions to 777 to no avail Any clue anyone. Update: I have tried following things and none cause APC file cache to populate 1. set apc.enable_cli = 1 AND run a script from cli 2. Set apc.max_file_size = 5M (just in case) 3. switched php handler from dso to FastCGI in WHM (then switched it back to dso as it did not solve the problem) 4. Even tried restarting the container

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• 404 Error on a file that exists?

  - by Abs

  Hello all, A script makes a GET request to my URL like so: http://mydomain.com/cgi-bin/uu_ini_status_audios.pl?tmp_sid=b742be1d131c4d32237a9f1fcdca659e&rnd_id=0.2363453360320319 However, I get a 404 returned straight away: The requested URL /cgi-bin/uu_ini_status_audios.pl was not found on this server. But that script exists on my server, I can see the file! It has the correct permissions (I gave it a 777 to be sure). It is also owned by my apache user and its in the group apache. What am I missing?? Thanks for any help on this! Update I thought it would have been a htaccess (rewrite) but I don't think it is anymore. I tried putting a index.php file in there and try to access it via my URL but I can't even do that! I tried this: http://mydoamin.com/cgi-bin/index.php - same 404 error! I get this in myerror log: [Tue Sep 14 14:42:49 2010] [error] [client xx.xxx.xx.xxx] script not found or unable to stat: /var/www/vhosts/mydomain.com/cgi-bin Access_log file: xx.xxx.xx.xxx - - [14/Sep/2010:14:48:25 +0200] "GET /cgi-bin/index.php HTTP/1.1" 404 475 "-" "Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.9) Gecko/20100824 Firefox/3.6.9 (.NET CLR 3.5.30729)" Update 2 My htaccess file: <IfModule mod_rewrite.c> RewriteEngine On RewriteRule ^blog/ - [L] RewriteCond %{HTTP_HOST} ^www\.mydomain\.com$ [NC] RewriteRule ^(.*)$ http://mydomain.com/$1 [R=301,L] RewriteRule ^search/(.*)/(.*)/(.*)/(.*) /search.php?searchfor=$1&sortby=$2&page=$3&searchterm=$4 RewriteRule ^confirmemail/(.*) /confirmemail.php?code=$1 RewriteRule ^resetpassword/(.*) /resetpassword.php?code=$1 RewriteRule ^resendconfirmation/(.*) /resendconfirmation.php?userid=$1 RewriteRule ^categories/ /categories.php RewriteRule ^([-_~*a-zA-Z0-9]+)(\/)?$ /memberprofile.php?username=$1 RewriteRule ^browse/audios/(.*)/(.*)/(.*)/(.*) /audios.php?sortby=$1&filter=$2&page=$3&title=$4 RewriteRule ^browse/categories/audios/(.*)/(.*)/(.*)/(.*) /categoryaudios.php?sortby=$1&filter=$2&page=$3&title=$4 RewriteRule ^audios/(.*)/(.*) /playaudio.php?audioid=$1&title=$2 RewriteRule ^download/audio/(.*)/(.*) /downloadaudio.php?AUDIOID=$1&title=$2 RewriteRule ^members/audios/(.*)/(.*) /memberaudios.php?pid=$1&username=$2 RewriteRule ^syndicate/audios/(.*)/(.*) /syndicateaudios.php?filter=$1&title=$2 </IfModule> Update 3 [root@smydomain ~]# ls -la /var/www/vhosts/mydoamin.com/httpdocs/cgi-bin/ total 60 drwxr-xr-x 3 apache root 4096 Sep 14 14:37 . drwxr-x--- 20 som psaserv 4096 Sep 14 14:40 .. drwxr-xr-x 2 apache root 4096 Sep 7 03:01 configs -rwxrwxrwx 1 apache root 4 Sep 14 14:37 index.php -rwxrwxrwx 1 apache apache 6520 Sep 7 03:01 uu_ini_status_audios.pl -rwxr-xr-x 1 apache root 3215 Sep 7 03:01 uu_lib_audios.pl -rwxr-xr-x 1 apache root 30249 Sep 7 03:01 uu_upload_audios.pl

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• Help debugging Sendmail/Mailman configuration issue

  - by inxilpro

  Hi folks, I'm trying to configure a server with Sendmail and Mailman. I've been getting "Broken pipe" errors for a while, and have slowly been debugging. I fixed some permission issues, and changed the user that Mailman expects to be called from, among other things. Finally, I'd gone through everything I could think of, so I added a new test to see if it's the Mailman script or Sendmail that's causing the problem. Here's the error I'm getting now (stripped of timestamps and identifying information): <-- MAIL FROM:[email protected] Authentication-Warning: xxxxx.org: xxxxxxxxxxxxxx.net [xx.xx.xxx.xxx] didn't use HELO protocol --- 250 2.1.0 [email protected]... Sender ok <-- RCPT TO: [email protected] --- 250 2.1.5 [email protected]... Recipient ok <-- DATA --- 354 Enter mail, end with "." on a line by itself [email protected], size=20, class=0, nrcpts=1, msgid=<[email protected]>, proto=SMTP, relay=xxxxxxxxxxxxxx.net [xx.xx.xxx.xxx] --- 250 2.0.0 o6KMg2xZ025804 Message accepted for delivery alias [email protected] => "|/bin/echo foo" SYSERR(root): putbody: write error: Broken pipe 0: fl=0x0, mode=20660: CHR: dev=0/15, ino=776, nlink=1, u/gid=0/0, size=0 1: fl=0x1, mode=20660: CHR: dev=0/15, ino=776, nlink=1, u/gid=0/0, size=0 2: fl=0x1, mode=20660: CHR: dev=0/15, ino=776, nlink=1, u/gid=0/0, size=0 3: fl=0x2, mode=140777: SOCK localhost->[[UNIX: /dev/log]] 5: fl=0x0, mode=100600: dev=8/3, ino=486765, nlink=1, u/gid=0/51, size=5 6: fl=0x8000, mode=100640: dev=8/3, ino=65501, nlink=1, u/gid=0/0, size=12288 7: fl=0x8000, mode=100640: dev=8/3, ino=65501, nlink=1, u/gid=0/0, size=12288 8: fl=0x8000, mode=100640: dev=8/3, ino=65510, nlink=1, u/gid=0/0, size=12288 9: fl=0x8000, mode=100640: dev=8/3, ino=65510, nlink=1, u/gid=0/0, size=12288 10: fl=0x8000, mode=100640: dev=8/3, ino=64814, nlink=1, u/gid=0/51, size=12288 11: fl=0x8000, mode=100640: dev=8/3, ino=64814, nlink=1, u/gid=0/51, size=12288 12: fl=0x1, mode=100600: dev=8/3, ino=486767, nlink=1, u/gid=0/51, size=754 13: fl=0x1, mode=10600: FIFO: dev=0/5, ino=7649785, nlink=1, u/gid=0/51, size=0 14: fl=0x0, mode=10600: FIFO: dev=0/5, ino=7649786, nlink=1, u/gid=0/51, size=0 MCI@0x0: NULL MCI@0x0: NULL to="|/bin/echo foo", [email protected] (8/0), delay=00:00:08, xdelay=00:00:00, mailer=prog, pri=30476, dsn=5.0.0, stat=Service unavailable o6KMsnxX025948: DSN: Service unavailable done; delay=00:00:08, ntries=1 The alias in /etc/aliases is: cmtest: "|/bin/echo foo" As you can see, even when trying to pipe to /bin/echo I still get the same error. But I can't for the life of me figure out what else to check. Normal aliases work fine. Any ideas? Thanks!

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• Removing file with strange characters in filename in OS X

  - by SiggyF

  After a memory error in my program, I am stuck with a file with a strange filename. It's proving quite resistant to all normal methods to remove files with strange names. The filename is: %8BUȅ҉%95d%F8%FF%FF\x0f%8E%8F%FD%FF%FF%8B%B5T%F8%FF%FF%8B%85\%F8%FF%FF\x03%85x%F8%FF%FF%8B%95D%F8%FF%FF%8B%BD%9C%F8%FF%FF%8D\x04%86%8B%B5@%F8%FF%FF%89%85%90%F8%FF%FF%8B%85X%F8%FF%FF\x03%85%9C%F8%FF%FF%C1%E7\x02%8B%8Dx I tried the following: rm * - "No such file or directory" rm -- filename - "No such file or directory" rm "filename" - "No such file or directory" ls -i to get the inode number - "No such file or directory" stat filename - "No such file or directory" zip the directory where the file is in - error occured while adding "" to the archive. delete directory in finder - error -43 in python: os.unlink(os.listdir(u'.')[0]) - OSError No such file or directory find . -type f -exec rm {} \; - "No such file or directory" checked for locks on the file with lsof - no locks All these attempts result in a file (long filename here) not found error, or error -43. Even the ls -i. I couldn't find anymore options, so before reformatting or repairing my filesystem (fsck might help) I thought maybe there is something I missed. I wrote this small c program to get the inode: #include <stdio.h> #include <stddef.h> #include <sys/types.h> int main(void) { DIR *dp; struct dirent *ep; dp = opendir ("./"); if (dp != NULL) { while (ep = readdir (dp)) { printf("d_ino=%ld, ", (unsigned long) ep->d_ino); printf("d_name=%s.\n", ep->d_name); } (void) closedir (dp); } else perror ("Couldn't open the directory"); return 0; } That works. I now have the inode, but the normal find -inum inode -exec rm '{}' \; doesn't work. I think I have to use the clri now.

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• SQL SERVER – Signal Wait Time Introduction with Simple Example – Wait Type – Day 2 of 28

  - by pinaldave

  In this post, let’s delve a bit more in depth regarding wait stats. The very first question: when do the wait stats occur? Here is the simple answer. When SQL Server is executing any task, and if for any reason it has to wait for resources to execute the task, this wait is recorded by SQL Server with the reason for the delay. Later on we can analyze these wait stats to understand the reason the task was delayed and maybe we can eliminate the wait for SQL Server. It is not always possible to remove the wait type 100%, but there are few suggestions that can help. Before we continue learning about wait types and wait stats, we need to understand three important milestones of the query life-cycle. Running - a query which is being executed on a CPU is called a running query. This query is responsible for CPU time. Runnable – a query which is ready to execute and waiting for its turn to run is called a runnable query. This query is responsible for Signal Wait time. (In other words, the query is ready to run but CPU is servicing another query). Suspended – a query which is waiting due to any reason (to know the reason, we are learning wait stats) to be converted to runnable is suspended query. This query is responsible for wait time. (In other words, this is the time we are trying to reduce). In simple words, query execution time is a summation of the query Executing CPU Time (Running) + Query Wait Time (Suspended) + Query Signal Wait Time (Runnable). Again, it may be possible a query goes to all these stats multiple times. Let us try to understand the whole thing with a simple analogy of a taxi and a passenger. Two friends, Tom and Danny, go to the mall together. When they leave the mall, they decide to take a taxi. Tom and Danny both stand in the line waiting for their turn to get into the taxi. This is the Signal Wait Time as they are ready to get into the taxi but the taxis are currently serving other customer and they have to wait for their turn. In other word they are in a runnable state. Now when it is their turn to get into the taxi, the taxi driver informs them he does not take credit cards and only cash is accepted. Neither Tom nor Danny have enough cash, they both cannot get into the vehicle. Tom waits outside in the queue and Danny goes to ATM to fetch the cash. During this time the taxi cannot wait, they have to let other passengers get into the taxi. As Tom and Danny both are outside in the queue, this is the Query Wait Time and they are in the suspended state. They cannot do anything till they get the cash. Once Danny gets the cash, they are both standing in the line again, creating one more Signal Wait Time. This time when their turn comes they can pay the taxi driver in cash and reach their destination. The time taken for the taxi to get from the mall to the destination is running time (CPU time) and the taxi is running. I hope this analogy is bit clear with the wait stats. You can check the Signalwait stats using following query of Glenn Berry. -- Signal Waits for instance SELECT CAST(100.0 * SUM(signal_wait_time_ms) / SUM (wait_time_ms) AS NUMERIC(20,2)) AS [%signal (cpu) waits], CAST(100.0 * SUM(wait_time_ms - signal_wait_time_ms) / SUM (wait_time_ms) AS NUMERIC(20,2)) AS [%resource waits] FROM sys.dm_os_wait_stats OPTION (RECOMPILE); Higher the Signal wait stats are not good for the system. Very high value indicates CPU pressure. In my experience, when systems are running smooth and without any glitch the Signal wait stat is lower than 20%. Again, this number can be debated (and it is from my experience and is not documented anywhere). In other words, lower is better and higher is not good for the system. In future articles we will discuss in detail the various wait types and wait stats and their resolution. Read all the post in the Wait Types and Queue series. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL DMV, SQL Performance, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQL Wait Stats, SQL Wait Types, T SQL, Technology

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• SQL SERVER – Single Wait Time Introduction with Simple Example – Wait Type – Day 2 of 28

  - by pinaldave

  In this post, let’s delve a bit more in depth regarding wait stats. The very first question: when do the wait stats occur? Here is the simple answer. When SQL Server is executing any task, and if for any reason it has to wait for resources to execute the task, this wait is recorded by SQL Server with the reason for the delay. Later on we can analyze these wait stats to understand the reason the task was delayed and maybe we can eliminate the wait for SQL Server. It is not always possible to remove the wait type 100%, but there are few suggestions that can help. Before we continue learning about wait types and wait stats, we need to understand three important milestones of the query life-cycle. Running - a query which is being executed on a CPU is called a running query. This query is responsible for CPU time. Runnable – a query which is ready to execute and waiting for its turn to run is called a runnable query. This query is responsible for Single Wait time. (In other words, the query is ready to run but CPU is servicing another query). Suspended – a query which is waiting due to any reason (to know the reason, we are learning wait stats) to be converted to runnable is suspended query. This query is responsible for wait time. (In other words, this is the time we are trying to reduce). In simple words, query execution time is a summation of the query Executing CPU Time (Running) + Query Wait Time (Suspended) + Query Single Wait Time (Runnable). Again, it may be possible a query goes to all these stats multiple times. Let us try to understand the whole thing with a simple analogy of a taxi and a passenger. Two friends, Tom and Danny, go to the mall together. When they leave the mall, they decide to take a taxi. Tom and Danny both stand in the line waiting for their turn to get into the taxi. This is the Signal Wait Time as they are ready to get into the taxi but the taxis are currently serving other customer and they have to wait for their turn. In other word they are in a runnable state. Now when it is their turn to get into the taxi, the taxi driver informs them he does not take credit cards and only cash is accepted. Neither Tom nor Danny have enough cash, they both cannot get into the vehicle. Tom waits outside in the queue and Danny goes to ATM to fetch the cash. During this time the taxi cannot wait, they have to let other passengers get into the taxi. As Tom and Danny both are outside in the queue, this is the Query Wait Time and they are in the suspended state. They cannot do anything till they get the cash. Once Danny gets the cash, they are both standing in the line again, creating one more Single Wait Time. This time when their turn comes they can pay the taxi driver in cash and reach their destination. The time taken for the taxi to get from the mall to the destination is running time (CPU time) and the taxi is running. I hope this analogy is bit clear with the wait stats. You can check the single wait stats using following query of Glenn Berry. -- Signal Waits for instance SELECT CAST(100.0 * SUM(signal_wait_time_ms) / SUM (wait_time_ms) AS NUMERIC(20,2)) AS [%signal (cpu) waits], CAST(100.0 * SUM(wait_time_ms - signal_wait_time_ms) / SUM (wait_time_ms) AS NUMERIC(20,2)) AS [%resource waits] FROM sys.dm_os_wait_stats OPTION (RECOMPILE); Higher the single wait stats are not good for the system. Very high value indicates CPU pressure. In my experience, when systems are running smooth and without any glitch the single wait stat is lower than 20%. Again, this number can be debated (and it is from my experience and is not documented anywhere). In other words, lower is better and higher is not good for the system. In future articles we will discuss in detail the various wait types and wait stats and their resolution. Read all the post in the Wait Types and Queue series. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL DMV, SQL Performance, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQL Wait Stats, SQL Wait Types, T SQL, Technology

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• Database model for keeping track of likes/shares/comments on blog posts over time

  - by gage

  My goal is to keep track of the popular posts on different blog sites based on social network activity at any given time. The goal is not to simply get the most popular now, but instead find posts that are popular compared to other posts on the same blog. For example, I follow a tech blog, a sports blog, and a gossip blog. The tech blog gets waaay more readership than the other two blogs, so in raw numbers every post on the tech blog will always out number views on the other two. So lets say the average tech blog post gets 500 facebook likes and the other two get an average of 50 likes per post. Then when there is a sports blog post that has 200 fb likes and a gossip blog post with 300 while the tech blog posts today have 500 likes I want to highlight the sports and gossip blog posts (more likes than average vs tech blog with more # of likes but just average for the blog) The approach I am thinking of taking is to make an entry in a database for each blog post. Every x minutes (say every 15 minutes) I will check how many likes/shares/comments an entry has received on all the social networks (facebook, twitter, google+, linkeIn). So over time there will be a history of likes for each blog post, i.e post 1234 after 15 min: 10 fb likes, 4 tweets, 6 g+ after 30 min: 15 fb likes, 15 tweets, 10 g+ ... ... after 48 hours: 200 fb likes, 25 tweets, 15 g+ By keeping a history like this for each blog post I can know the average number of likes/shares/tweets at any give time interval. So for example the average number of fb likes for all blog posts 48hrs after posting is 50, and a particular post has 200 I can mark that as a popular post and feature/highlight it. A consideration in the design is to be able to easily query the values (likes/shares) for a specific time-frame, i.e. fb likes after 30min or tweets after 24 hrs in-order to compute averages with which to compare against (or should averages be stored in it's own table?) If this approach is flawed or could use improvement please let me know, but it is not my main question. My main question is what should a database scheme for storing this info look like? Assuming that the above approach is taken I am trying to figure out what a database schema for storing the likes over time would look like. I am brand new to databases, in doing some basic reading I see that it is advisable to make a 3NF database. I have come up with the following possible schema. Schema 1 DB Popular Posts Table: Post post_id ( primary key(pk) ) url title Table: Social Activity activity_id (pk) url (fk) type (i.e. facebook,twitter,g+) value timestamp This was my initial instinct (base on my very limited db knowledge). As far as I under stand this schema would be 3NF? I searched for designs of similar database model, and found this question on stackoverflow, http://stackoverflow.com/questions/11216080/data-structure-for-storing-height-and-weight-etc-over-time-for-multiple-users . The scenario in that question is similar (recording weight/height of users overtime). Taking the accepted answer for that question and applying it to my model results in something like: Schema 2 (same as above, but break down the social activity into 2 tables) DB Popular Posts Table: Post post_id (pk) url title Table: Social Measurement measurement_id (pk) post_id (fk) timestamp Table: Social stat stat_id (pk) measurement_id (fk) type (i.e. facebook,twitter,g+) value The advantage I see in schema 2 is that I will likely want to access all the values for a given time, i.e. when making a measurement at 30min after a post is published I will simultaneous check number of fb likes, fb shares, fb comments, tweets, g+, linkedIn. So with this schema it may be easier get get all stats for a measurement_id corresponding to a certain time, i.e. all social stats for post 1234 at time x. Another thought I had is since it doesn't make sense to compare number of fb likes with number of tweets or g+ shares, maybe it makes sense to separate each social measurement into it's own table? Schema 3 DB Popular Posts Table: Post post_id (pk) url title Table: fb_likes fb_like_id (pk) post_id (fk) timestamp value Table: fb_shares fb_shares_id (pk) post_id (fk) timestamp value Table: tweets tweets__id (pk) post_id (fk) timestamp value Table: google_plus google_plus_id (pk) post_id (fk) timestamp value As you can see I am generally lost/unsure of what approach to take. I'm sure this typical type of database problem (storing measurements overtime, i.e temperature statistic) that must have a common solution. Is there a design pattern/model for this, does it have a name? I tried searching for "database periodic data collection" or "database measurements over time" but didn't find anything specific. What would be an appropriate model to solve the needs of this problem?

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• SQL SERVER – PAGELATCH_DT, PAGELATCH_EX, PAGELATCH_KP, PAGELATCH_SH, PAGELATCH_UP – Wait Type – Day 12 of 28

  - by pinaldave

  This is another common wait type. However, I still frequently see people getting confused with PAGEIOLATCH_X and PAGELATCH_X wait types. Actually, there is a big difference between the two. PAGEIOLATCH is related to IO issues, while PAGELATCH is not related to IO issues but is oftentimes linked to a buffer issue. Before we delve deeper in this interesting topic, first let us understand what Latch is. Latches are internal SQL Server locks which can be described as very lightweight and short-term synchronization objects. Latches are not primarily to protect pages being read from disk into memory. It’s a synchronization object for any in-memory access to any portion of a log or data file.[Updated based on comment of Paul Randal] The difference between locks and latches is that locks seal all the involved resources throughout the duration of the transactions (and other processes will have no access to the object), whereas latches locks the resources during the time when the data is changed. This way, a latch is able to maintain the integrity of the data between storage engine and data cache. A latch is a short-living lock that is put on resources on buffer cache and in the physical disk when data is moved in either directions. As soon as the data is moved, the latch is released. Now, let us understand the wait stat type  related to latches. From Book On-Line: PAGELATCH_DT Occurs when a task is waiting on a latch for a buffer that is not in an I/O request. The latch request is in Destroy mode. PAGELATCH_EX Occurs when a task is waiting on a latch for a buffer that is not in an I/O request. The latch request is in Exclusive mode. PAGELATCH_KP Occurs when a task is waiting on a latch for a buffer that is not in an I/O request. The latch request is in Keep mode. PAGELATCH_SH Occurs when a task is waiting on a latch for a buffer that is not in an I/O request. The latch request is in Shared mode. PAGELATCH_UP Occurs when a task is waiting on a latch for a buffer that is not in an I/O request. The latch request is in Update mode. PAGELATCH_X Explanation: When there is a contention of access of the in-memory pages, this wait type shows up. It is quite possible that some of the pages in the memory are of very high demand. For the SQL Server to access them and put a latch on the pages, it will have to wait. This wait type is usually created at the same time. Additionally, it is commonly visible when the TempDB has higher contention as well. If there are indexes that are heavily used, contention can be created as well, leading to this wait type. Reducing PAGELATCH_X wait: The following counters are useful to understand the status of the PAGELATCH: Average Latch Wait Time (ms): The wait time for latch requests that have to wait. Latch Waits/sec: This is the number of latch requests that could not be granted immediately. Total Latch Wait Time (ms): This is the total latch wait time for latch requests in the last second. If there is TempDB contention, I suggest that you read the blog post of Robert Davis right away. He has written an excellent blog post regarding how to find out TempDB contention. The same blog post explains the terms in the allocation of GAM, SGAM and PFS. If there was a TempDB contention, Paul Randal explains the optimal settings for the TempDB in his misconceptions series. Trace Flag 1118 can be useful but use it very carefully. I totally understand that this blog post is not as clear as my other blog posts. I suggest if this wait stats is on one of your higher wait type. Do leave a comment or send me an email and I will get back to you with my solution for your situation. May the looking at all other wait stats and types together become effective as this wait type can help suggest proper bottleneck in your system. Read all the post in the Wait Types and Queue series. Note: The information presented here is from my experience and there is no way that I claim it to be accurate. I suggest reading Book OnLine for further clarification. All the discussions of Wait Stats in this blog are generic and vary from system to system. It is recommended that you test this on a development server before implementing it to a production server. Reference: Pinal Dave (http://blog.SQLAuthority.com)   Filed under: Pinal Dave, PostADay, SQL, SQL Authority, SQL Query, SQL Scripts, SQL Server, SQL Tips and Tricks, SQL Wait Stats, SQL Wait Types, T SQL, Technology

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• Installing gtk-config and/or fsv in Ubuntu 10.10

  - by Wayne Werner

  Hi, I'm trying to install the File System Visualizer (think "It's a UNIX System! I know this!" from Jurassic Park) on Ubuntu 10.10. I've got the .tar.gz downloaded, and extracted. However, when I ./configure, I get this output: loading cache ./config.cache checking for a BSD compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking whether make sets ${MAKE}... yes checking for working aclocal... found checking for working autoconf... found checking for working automake... found checking for working autoheader... found checking for working makeinfo... missing checking for gcc... gcc checking whether the C compiler (gcc ) works... yes checking whether the C compiler (gcc ) is a cross-compiler... no checking whether we are using GNU C... yes checking whether gcc accepts -g... yes checking how to run the C preprocessor... gcc -E checking for ranlib... ranlib checking for POSIXized ISC... no checking for dirent.h that defines DIR... yes checking for opendir in -ldir... no checking for ANSI C header files... yes checking whether time.h and sys/time.h may both be included... yes checking for strings.h... yes checking for sys/time.h... yes checking for unistd.h... yes checking for working const... yes checking for mode_t... yes checking for uid_t in sys/types.h... yes checking for pid_t... yes checking for size_t... yes checking for comparison_fn_t... yes checking for st_blocks in struct stat... yes checking whether struct tm is in sys/time.h or time.h... time.h checking for working alloca.h... yes checking for alloca... yes checking for working fnmatch... yes checking for strftime... yes checking for getcwd... yes checking for gettimeofday... yes checking for mktime... yes checking for strcspn... yes checking for strdup... yes checking for strspn... yes checking for strtod... yes checking for strtoul... yes checking for scandir... yes checking for inline... inline checking for off_t... yes checking for unistd.h... (cached) yes checking for getpagesize... yes checking for working mmap... yes checking for argz.h... yes checking for limits.h... yes checking for locale.h... yes checking for nl_types.h... yes checking for malloc.h... yes checking for string.h... yes checking for unistd.h... (cached) yes checking for sys/param.h... yes checking for getcwd... (cached) yes checking for munmap... yes checking for putenv... yes checking for setenv... yes checking for setlocale... yes checking for strchr... yes checking for strcasecmp... yes checking for strdup... (cached) yes checking for __argz_count... yes checking for __argz_stringify... yes checking for __argz_next... yes checking for stpcpy... yes checking for LC_MESSAGES... yes checking whether NLS is requested... yes checking whether included gettext is requested... no checking for libintl.h... yes checking for gettext in libc... yes checking for msgfmt... /usr/bin/msgfmt checking for dcgettext... yes checking for gmsgfmt... /usr/bin/msgfmt checking for xgettext... /usr/bin/xgettext checking for gtk-config... no checking for GTK - version >= 1.2.1... no *** The gtk-config script installed by GTK could not be found *** If GTK was installed in PREFIX, make sure PREFIX/bin is in *** your path, or set the GTK_CONFIG environment variable to the *** full path to gtk-config. configure: error: Cannot find proper GTK+ version Obviously it's looking for gtk-config. However, apparently it doesn't exist in the repos anymore. Then this post mentioned that gtkglarea solved their problem, as mentioned in this file. Of course that poster neatly forgets to mention exactly what and how gtkglarea solved their problem, and Google is mostly devoid of information on the problem. So I come here asking for help! I would like to install fsv, but it tells me gtk-config doesn't exist. How can I fix this problem in Ubuntu 10.10? Thanks!

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• problem occur during installation of moses scripts

  - by lenny99

  we got error when compile moses-script. process of it as follows: minakshi@minakshi-Vostro-3500:~/Desktop/monu/moses/scripts$ make release # Compile the parts make all make[1]: Entering directory `/home/minakshi/Desktop/monu/moses/scripts' # Building memscore may fail e.g. if boost is not available. # We ignore this because traditional scoring will still work and memscore isn't used by default. cd training/memscore ; \ ./configure && make \ || ( echo "WARNING: Building memscore failed."; \ echo 'training/memscore/memscore' >> ../../release-exclude ) checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for gawk... no checking for mawk... mawk checking whether make sets $(MAKE)... yes checking for g++... g++ checking whether the C++ compiler works... yes checking for C++ compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... no checking for suffix of object files... o checking whether we are using the GNU C++ compiler... yes checking whether g++ accepts -g... yes checking for style of include used by make... GNU checking dependency style of g++... gcc3 checking for gcc... gcc checking whether we are using the GNU C compiler... yes checking whether gcc accepts -g... yes checking for gcc option to accept ISO C89... none needed checking dependency style of gcc... gcc3 checking for boostlib >= 1.31.0... yes checking for cos in -lm... yes checking for gzopen in -lz... yes checking for cblas_dgemm in -lgslcblas... no checking for gsl_blas_dgemm in -lgsl... no checking how to run the C++ preprocessor... g++ -E checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E checking for ANSI C header files... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking n_gram.h usability... no checking n_gram.h presence... no checking for n_gram.h... no checking for size_t... yes checking for ptrdiff_t... yes configure: creating ./config.status config.status: creating Makefile config.status: creating config.h config.status: config.h is unchanged config.status: executing depfiles commands make[2]: Entering directory `/home/minakshi/Desktop/monu/moses/scripts/training/memscore' make all-am make[3]: Entering directory `/home/minakshi/Desktop/monu/moses/scripts/training/memscore' make[3]: Leaving directory `/home/minakshi/Desktop/monu/moses/scripts/training/memscore' make[2]: Leaving directory `/home/minakshi/Desktop/monu/moses/scripts/training/memscore' touch release-exclude # No files excluded by default pwd=`pwd`; \ for subdir in cmert-0.5 phrase-extract symal mbr lexical-reordering; do \ make -C training/$subdir || exit 1; \ echo "### Compiler $subdir"; \ cd $pwd; \ done make[2]: Entering directory `/home/minakshi/Desktop/monu/moses/scripts/training/cmert-0.5' make[2]: Nothing to be done for `all'. make[2]: Leaving directory `/home/minakshi/Desktop/monu/moses/scripts/training/cmert-0.5' ### Compiler cmert-0.5 make[2]: Entering directory `/home/minakshi/Desktop/monu/moses/scripts/training/phrase-extract' make[2]: Nothing to be done for `all'. make[2]: Leaving directory `/home/minakshi/Desktop/monu/moses/scripts/training/phrase-extract' ### Compiler phrase-extract make[2]: Entering directory `/home/minakshi/Desktop/monu/moses/scripts/training/symal' make[2]: Nothing to be done for `all'. make[2]: Leaving directory `/home/minakshi/Desktop/monu/moses/scripts/training/symal' ### Compiler symal make[2]: Entering directory `/home/minakshi/Desktop/monu/moses/scripts/training/mbr' make[2]: Nothing to be done for `all'. make[2]: Leaving directory `/home/minakshi/Desktop/monu/moses/scripts/training/mbr' ### Compiler mbr make[2]: Entering directory `/home/minakshi/Desktop/monu/moses/scripts/training/lexical-reordering' make[2]: Nothing to be done for `all'. make[2]: Leaving directory `/home/minakshi/Desktop/monu/moses/scripts/training/lexical-reordering' ### Compiler lexical-reordering ## All files that need compilation were compiled make[1]: Leaving directory `/home/minakshi/Desktop/monu/moses/scripts' /bin/sh: ./check-dependencies.pl: not found make: *** [release] Error 127 We don't know why this error occurs? check-dependencies.pl file existed in scripts folder ...

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• Helping install mrcwa and solve problems with f2py in Ubuntu 14.04 LTS

  - by user288160

  I am sorry if this is the wrong section but I am starting to get desperate, please someone help me... I need to install the program mrcwa-20080820 (sourceforge.net/projects/mrcwa/) because a summer project that I am involved. I need to use it together with anaconda (store.continuum.io/cshop/anaconda/), I already installed Anaconda and apparently it is working. When I type: conda --version I got the expected answer. conda 3.5.2 If I tried to import numpy or scipy with python or simple type f2py there are no errors. So far so good. But when I tried to install this program sudo python setup.py install I got these errors: running install running build sh: 1: f2py: not found cp: cannot stat ‘mrcwaf.so’: No such file or directory running build_py running install_lib running install_egg_info Removing /usr/local/lib/python2.7/dist-packages/mrcwa-20080820.egg-info Writing /usr/local/lib/python2.7/dist-packages/mrcwa-20080820.egg-info Obs: I am trying to use intel fortran 64-bits and Ubuntu 14.04 LTS. So I was checking f2py and tried to execute the program hello world f2py -c -m hello hello.f from here: cens.ioc.ee/projects/f2py2e/index.html#usage and I had some problems too: running build running config_cc unifing config_cc, config, build_clib, build_ext, build commands --compiler options running config_fc unifing config_fc, config, build_clib, build_ext, build commands --fcompiler options running build_src build_src building extension "hello" sources f2py options: [] f2py:> /tmp/tmpf8P4Y3/src.linux-x86_64-2.7/hellomodule.c creating /tmp/tmpf8P4Y3/src.linux-x86_64-2.7 Reading fortran codes... Reading file 'hello.f' (format:fix,strict) Post-processing... Block: hello Block: foo Post-processing (stage 2)... Building modules... Building module "hello"... Constructing wrapper function "foo"... foo(a) Wrote C/API module "hello" to file "/tmp/tmpf8P4Y3/src.linux-x86_64-2.7 /hellomodule.c" adding '/tmp/tmpf8P4Y3/src.linux-x86_64-2.7/fortranobject.c' to sources. adding '/tmp/tmpf8P4Y3/src.linux-x86_64-2.7' to include_dirs. copying /home/felipe/.local/lib/python2.7/site-packages/numpy/f2py/src/fortranobject.c -> /tmp/tmpf8P4Y3/src.linux-x86_64-2.7 copying /home/felipe/.local/lib/python2.7/site-packages/numpy/f2py/src/fortranobject.h -> /tmp/tmpf8P4Y3/src.linux-x86_64-2.7 build_src: building npy-pkg config files running build_ext customize UnixCCompiler customize UnixCCompiler using build_ext customize Gnu95FCompiler Could not locate executable gfortran Could not locate executable f95 customize IntelFCompiler Found executable /opt/intel/composer_xe_2013_sp1.3.174/bin/intel64/ifort customize LaheyFCompiler Could not locate executable lf95 customize PGroupFCompiler Could not locate executable pgfortran customize AbsoftFCompiler Could not locate executable f90 Could not locate executable f77 customize NAGFCompiler customize VastFCompiler customize CompaqFCompiler Could not locate executable fort customize IntelItaniumFCompiler customize IntelEM64TFCompiler customize IntelEM64TFCompiler customize IntelEM64TFCompiler using build_ext building 'hello' extension compiling C sources C compiler: gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC creating /tmp/tmpf8P4Y3/tmp creating /tmp/tmpf8P4Y3/tmp/tmpf8P4Y3 creating /tmp/tmpf8P4Y3/tmp/tmpf8P4Y3/src.linux-x86_64-2.7 compile options: '-I/tmp/tmpf8P4Y3/src.linux-x86_64-2.7 -I/home/felipe/.local/lib/python2.7/site-packages/numpy/core/include -I/home/felipe/anaconda/include/python2.7 -c' gcc: /tmp/tmpf8P4Y3/src.linux-x86_64-2.7/hellomodule.c In file included from /home/felipe/.local/lib/python2.7/site-packages/numpy/core/include/numpy/ndarraytypes.h:1761:0, from /home/felipe/.local/lib/python2.7/site-packages/numpy/core/include/numpy/ndarrayobject.h:17, from /home/felipe/.local/lib/python2.7/site-packages/numpy/core/include/numpy/arrayobject.h:4, from /tmp/tmpf8P4Y3/src.linux-x86_64-2.7/fortranobject.h:13, from /tmp/tmpf8P4Y3/src.linux-x86_64-2.7/hellomodule.c:17: /home/felipe/.local/lib/python2.7/site-packages/numpy/core/include/numpy/npy_1_7_deprecated_api.h:15:2: warning: #warning "Using deprecated NumPy API, disable it by " "#defining NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION" [-Wcpp] #warning "Using deprecated NumPy API, disable it by " \ ^ gcc: /tmp/tmpf8P4Y3/src.linux-x86_64-2.7/fortranobject.c In file included from /home/felipe/.local/lib/python2.7/site-packages/numpy/core/include/numpy/ndarraytypes.h:1761:0, from /home/felipe/.local/lib/python2.7/site-packages/numpy/core/include/numpy/ndarrayobject.h:17, from /home/felipe/.local/lib/python2.7/site-packages/numpy/core/include/numpy/arrayobject.h:4, from /tmp/tmpf8P4Y3/src.linux-x86_64-2.7/fortranobject.h:13, from /tmp/tmpf8P4Y3/src.linux-x86_64-2.7/fortranobject.c:2: /home/felipe/.local/lib/python2.7/site-packages/numpy/core/include/numpy/npy_1_7_deprecated_api.h:15:2: warning: #warning "Using deprecated NumPy API, disable it by " "#defining NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION" [-Wcpp] #warning "Using deprecated NumPy API, disable it by " \ ^ compiling Fortran sources Fortran f77 compiler: /opt/intel/composer_xe_2013_sp1.3.174/bin/intel64/ifort -FI -fPIC -xhost -openmp -fp-model strict Fortran f90 compiler: /opt/intel/composer_xe_2013_sp1.3.174/bin/intel64/ifort -FR -fPIC -xhost -openmp -fp-model strict Fortran fix compiler: /opt/intel/composer_xe_2013_sp1.3.174/bin/intel64/ifort -FI -fPIC -xhost -openmp -fp-model strict compile options: '-I/tmp/tmpf8P4Y3/src.linux-x86_64-2.7 -I/home/felipe/.local /lib/python2.7/site-packages/numpy/core/include -I/home/felipe/anaconda/include/python2.7 -c' ifort:f77: hello.f /opt/intel/composer_xe_2013_sp1.3.174/bin/intel64/ifort -shared -shared -nofor_main /tmp/tmpf8P4Y3/tmp/tmpf8P4Y3/src.linux-x86_64-2.7/hellomodule.o /tmp/tmpf8P4Y3 /tmp/tmpf8P4Y3/src.linux-x86_64-2.7/fortranobject.o /tmp/tmpf8P4Y3/hello.o -L/home/felipe /anaconda/lib -lpython2.7 -o ./hello.so Removing build directory /tmp/tmpf8P4Y3 Please help me I am new in ubuntu and python. I really need this program, my advisor is waiting an answer. Thank you very much, Felipe Oliveira.

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• PASS Summit 2011 &ndash; Part III

  - by Tara Kizer

  Well we’re about a month past PASS Summit 2011, and yet I haven’t finished blogging my notes! Between work and home life, I haven’t been able to come up for air in a bit.  Now on to my notes… On Thursday of the PASS Summit 2011, I attended Klaus Aschenbrenner’s (blog|twitter) “Advanced SQL Server 2008 Troubleshooting”, Joe Webb’s (blog|twitter) “SQL Server Locking & Blocking Made Simple”, Kalen Delaney’s (blog|twitter) “What Happened? Exploring the Plan Cache”, and Paul Randal’s (blog|twitter) “More DBA Mythbusters”.  I think my head grew two times in size from the Thursday sessions.  Just WOW! I took a ton of notes in Klaus' session.  He took a deep dive into how to troubleshoot performance problems.  Here is how he goes about solving a performance problem: Start by checking the wait stats DMV System health Memory issues I/O issues I normally start with blocking and then hit the wait stats.  Here’s the wait stat query (Paul Randal’s) that I use when working on a performance problem.  He highlighted a few waits to be aware of such as WRITELOG (indicates IO subsystem problem), SOS_SCHEDULER_YIELD (indicates CPU problem), and PAGEIOLATCH_XX (indicates an IO subsystem problem or a buffer pool problem).  Regarding memory issues, Klaus recommended that as a bare minimum, one should set the “max server memory (MB)” in sp_configure to 2GB or 10% reserved for the OS (whichever comes first).  This is just a starting point though! Regarding I/O issues, Klaus talked about disk partition alignment, which can improve SQL I/O performance by up to 100%.  You should use 64kb for NTFS cluster, and it’s automatic in Windows 2008 R2. Joe’s locking and blocking presentation was a good session to really clear up the fog in my mind about locking.  One takeaway that I had no idea could be done was that you can set a timeout in T-SQL code view LOCK_TIMEOUT.  If you do this via the application, you should trap error 1222. Kalen’s session went into execution plans.  The minimum size of a plan is 24k.  This adds up fast especially if you have a lot of plans that don’t get reused much.  You can use sys.dm_exec_cached_plans to check how often a plan is being reused by checking the usecounts column.  She said that we can use DBCC FLUSHPROCINDB to clear out the stored procedure cache for a specific database.  I didn’t know we had this available, so this was great to hear.  This will be less intrusive when an emergency comes up where I’ve needed to run DBCC FREEPROCCACHE. Kalen said one should enable “optimize for ad hoc workloads” if you have an adhoc loc.  This stores only a 300-byte stub of the first plan, and if it gets run again, it’ll store the whole thing.  This helps with plan cache bloat.  I have a lot of systems that use prepared statements, and Kalen says we simulate those calls by using sp_executesql.  Cool! Paul did a series of posts last year to debunk various myths and misconceptions around SQL Server.  He continues to debunk things via “DBA Mythbusters”.  You can get a PDF of a bunch of these here.  One of the myths he went over is the number of tempdb data files that you should have.  Back in 2000, the recommendation was to have as many tempdb data files as there are CPU cores on your server.  This no longer holds true due to the numerous cores we have on our servers.  Paul says you should start out with 1/4 to 1/2 the number of cores and work your way up from there.  BUT!  Paul likes what Bob Ward (twitter) says on this topic: 8 or less cores –> set number of files equal to the number of cores Greater than 8 cores –> start with 8 files and increase in blocks of 4 One common myth out there is to set your MAXDOP to 1 for an OLTP workload with high CXPACKET waits.  Instead of that, dig deeper first.  Look for missing indexes, out-of-date statistics, increase the “cost threshold for parallelism” setting, and perhaps set MAXDOP at the query level.  Paul stressed that you should not plan a backup strategy but instead plan a restore strategy.  What are your recoverability requirements?  Once you know that, now plan out your backups. As Paul always does, he talked about DBCC CHECKDB.  He said how fabulous it is.  I didn’t want to interrupt the presentation, so after his session had ended, I asked Paul about the need to run DBCC CHECKDB on your mirror systems.  You could have data corruption occur at the mirror and not at the principal server.  If you aren’t checking for data corruption on your mirror systems, you could be failing over to a corrupt database in the case of a disaster or even a planned failover.  You can’t run DBCC CHECKDB against the mirrored database, but you can run it against a snapshot off the mirrored database.

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• Rkhunter 122 suspect files; do I have a problem?

  - by user276166

  I am new to ubuntu. I am using Xfce Ubuntu 14.04 LTS. I have ran rkhunter a few weeks age and only got a few warnings. The forum said that they were normal. But, this time rkhunter reported 122 warnings. Please advise. casey@Shaman:~$ sudo rkhunter -c [ Rootkit Hunter version 1.4.0 ] Checking system commands... Performing 'strings' command checks Checking 'strings' command [ OK ] Performing 'shared libraries' checks Checking for preloading variables [ None found ] Checking for preloaded libraries [ None found ] Checking LD_LIBRARY_PATH variable [ Not found ] Performing file properties checks Checking for prerequisites [ Warning ] /usr/sbin/adduser [ Warning ] /usr/sbin/chroot [ Warning ] /usr/sbin/cron [ OK ] /usr/sbin/groupadd [ Warning ] /usr/sbin/groupdel [ Warning ] /usr/sbin/groupmod [ Warning ] /usr/sbin/grpck [ Warning ] /usr/sbin/nologin [ Warning ] /usr/sbin/pwck [ Warning ] /usr/sbin/rsyslogd [ Warning ] /usr/sbin/useradd [ Warning ] /usr/sbin/userdel [ Warning ] /usr/sbin/usermod [ Warning ] /usr/sbin/vipw [ Warning ] /usr/bin/awk [ Warning ] /usr/bin/basename [ Warning ] /usr/bin/chattr [ Warning ] /usr/bin/cut [ Warning ] /usr/bin/diff [ Warning ] /usr/bin/dirname [ Warning ] /usr/bin/dpkg [ Warning ] /usr/bin/dpkg-query [ Warning ] /usr/bin/du [ Warning ] /usr/bin/env [ Warning ] /usr/bin/file [ Warning ] /usr/bin/find [ Warning ] /usr/bin/GET [ Warning ] /usr/bin/groups [ Warning ] /usr/bin/head [ Warning ] /usr/bin/id [ Warning ] /usr/bin/killall [ OK ] /usr/bin/last [ Warning ] /usr/bin/lastlog [ Warning ] /usr/bin/ldd [ Warning ] /usr/bin/less [ OK ] /usr/bin/locate [ OK ] /usr/bin/logger [ Warning ] /usr/bin/lsattr [ Warning ] /usr/bin/lsof [ OK ] /usr/bin/mail [ OK ] /usr/bin/md5sum [ Warning ] /usr/bin/mlocate [ OK ] /usr/bin/newgrp [ Warning ] /usr/bin/passwd [ Warning ] /usr/bin/perl [ Warning ] /usr/bin/pgrep [ Warning ] /usr/bin/pkill [ Warning ] /usr/bin/pstree [ OK ] /usr/bin/rkhunter [ OK ] /usr/bin/rpm [ Warning ] /usr/bin/runcon [ Warning ] /usr/bin/sha1sum [ Warning ] /usr/bin/sha224sum [ Warning ] /usr/bin/sha256sum [ Warning ] /usr/bin/sha384sum [ Warning ] /usr/bin/sha512sum [ Warning ] /usr/bin/size [ Warning ] /usr/bin/sort [ Warning ] /usr/bin/stat [ Warning ] /usr/bin/strace [ Warning ] /usr/bin/strings [ Warning ] /usr/bin/sudo [ Warning ] /usr/bin/tail [ Warning ] /usr/bin/test [ Warning ] /usr/bin/top [ Warning ] /usr/bin/touch [ Warning ] /usr/bin/tr [ Warning ] /usr/bin/uniq [ Warning ] /usr/bin/users [ Warning ] /usr/bin/vmstat [ Warning ] /usr/bin/w [ Warning ] /usr/bin/watch [ Warning ] /usr/bin/wc [ Warning ] /usr/bin/wget [ Warning ] /usr/bin/whatis [ Warning ] /usr/bin/whereis [ Warning ] /usr/bin/which [ OK ] /usr/bin/who [ Warning ] /usr/bin/whoami [ Warning ] /usr/bin/unhide.rb [ Warning ] /usr/bin/mawk [ Warning ] /usr/bin/lwp-request [ Warning ] /usr/bin/heirloom-mailx [ OK ] /usr/bin/w.procps [ Warning ] /sbin/depmod [ Warning ] /sbin/fsck [ Warning ] /sbin/ifconfig [ Warning ] /sbin/ifdown [ Warning ] /sbin/ifup [ Warning ] /sbin/init [ Warning ] /sbin/insmod [ Warning ] /sbin/ip [ Warning ] /sbin/lsmod [ Warning ] /sbin/modinfo [ Warning ] /sbin/modprobe [ Warning ] /sbin/rmmod [ Warning ] /sbin/route [ Warning ] /sbin/runlevel [ Warning ] /sbin/sulogin [ Warning ] /sbin/sysctl [ Warning ] /bin/bash [ Warning ] /bin/cat [ Warning ] /bin/chmod [ Warning ] /bin/chown [ Warning ] /bin/cp [ Warning ] /bin/date [ Warning ] /bin/df [ Warning ] /bin/dmesg [ Warning ] /bin/echo [ Warning ] /bin/ed [ OK ] /bin/egrep [ Warning ] /bin/fgrep [ Warning ] /bin/fuser [ OK ] /bin/grep [ Warning ] /bin/ip [ Warning ] /bin/kill [ Warning ] /bin/less [ OK ] /bin/login [ Warning ] /bin/ls [ Warning ] /bin/lsmod [ Warning ] /bin/mktemp [ Warning ] /bin/more [ Warning ] /bin/mount [ Warning ] /bin/mv [ Warning ] /bin/netstat [ Warning ] /bin/ping [ Warning ] /bin/ps [ Warning ] /bin/pwd [ Warning ] /bin/readlink [ Warning ] /bin/sed [ Warning ] /bin/sh [ Warning ] /bin/su [ Warning ] /bin/touch [ Warning ] /bin/uname [ Warning ] /bin/which [ OK ] /bin/kmod [ Warning ] /bin/dash [ Warning ] [Press <ENTER> to continue] Checking for rootkits... Performing check of known rootkit files and directories 55808 Trojan - Variant A [ Not found ] ADM Worm [ Not found ] AjaKit Rootkit [ Not found ] Adore Rootkit [ Not found ] aPa Kit [ Not found ] Apache Worm [ Not found ] Ambient (ark) Rootkit [ Not found ] Balaur Rootkit [ Not found ] BeastKit Rootkit [ Not found ] beX2 Rootkit [ Not found ] BOBKit Rootkit [ Not found ] cb Rootkit [ Not found ] CiNIK Worm (Slapper.B variant) [ Not found ] Danny-Boy's Abuse Kit [ Not found ] Devil RootKit [ Not found ] Dica-Kit Rootkit [ Not found ] Dreams Rootkit [ Not found ] Duarawkz Rootkit [ Not found ] Enye LKM [ Not found ] Flea Linux Rootkit [ Not found ] Fu Rootkit [ Not found ] Fuck`it Rootkit [ Not found ] GasKit Rootkit [ Not found ] Heroin LKM [ Not found ] HjC Kit [ Not found ] ignoKit Rootkit [ Not found ] IntoXonia-NG Rootkit [ Not found ] Irix Rootkit [ Not found ] Jynx Rootkit [ Not found ] KBeast Rootkit [ Not found ] Kitko Rootkit [ Not found ] Knark Rootkit [ Not found ] ld-linuxv.so Rootkit [ Not found ] Li0n Worm [ Not found ] Lockit / LJK2 Rootkit [ Not found ] Mood-NT Rootkit [ Not found ] MRK Rootkit [ Not found ] Ni0 Rootkit [ Not found ] Ohhara Rootkit [ Not found ] Optic Kit (Tux) Worm [ Not found ] Oz Rootkit [ Not found ] Phalanx Rootkit [ Not found ] Phalanx2 Rootkit [ Not found ] Phalanx2 Rootkit (extended tests) [ Not found ] Portacelo Rootkit [ Not found ] R3dstorm Toolkit [ Not found ] RH-Sharpe's Rootkit [ Not found ] RSHA's Rootkit [ Not found ] Scalper Worm [ Not found ] Sebek LKM [ Not found ] Shutdown Rootkit [ Not found ] SHV4 Rootkit [ Not found ] SHV5 Rootkit [ Not found ] Sin Rootkit [ Not found ] Slapper Worm [ Not found ] Sneakin Rootkit [ Not found ] 'Spanish' Rootkit [ Not found ] Suckit Rootkit [ Not found ] Superkit Rootkit [ Not found ] TBD (Telnet BackDoor) [ Not found ] TeLeKiT Rootkit [ Not found ] T0rn Rootkit [ Not found ] trNkit Rootkit [ Not found ] Trojanit Kit [ Not found ] Tuxtendo Rootkit [ Not found ] URK Rootkit [ Not found ] Vampire Rootkit [ Not found ] VcKit Rootkit [ Not found ] Volc Rootkit [ Not found ] Xzibit Rootkit [ Not found ] zaRwT.KiT Rootkit [ Not found ] ZK Rootkit [ Not found ] [Press <ENTER> to continue] Performing additional rootkit checks Suckit Rookit additional checks [ OK ] Checking for possible rootkit files and directories [ None found ] Checking for possible rootkit strings [ None found ] Performing malware checks Checking running processes for suspicious files [ None found ] Checking for login backdoors [ None found ] Checking for suspicious directories [ None found ] Checking for sniffer log files [ None found ] Performing Linux specific checks Checking loaded kernel modules [ OK ] Checking kernel module names [ OK ] [Press <ENTER> to continue] Checking the network... Performing checks on the network ports Checking for backdoor ports [ None found ] Checking for hidden ports [ Skipped ] Performing checks on the network interfaces Checking for promiscuous interfaces [ None found ] Checking the local host... Performing system boot checks Checking for local host name [ Found ] Checking for system startup files [ Found ] Checking system startup files for malware [ None found ] Performing group and account checks Checking for passwd file [ Found ] Checking for root equivalent (UID 0) accounts [ None found ] Checking for passwordless accounts [ None found ] Checking for passwd file changes [ Warning ] Checking for group file changes [ Warning ] Checking root account shell history files [ None found ] Performing system configuration file checks Checking for SSH configuration file [ Not found ] Checking for running syslog daemon [ Found ] Checking for syslog configuration file [ Found ] Checking if syslog remote logging is allowed [ Not allowed ] Performing filesystem checks Checking /dev for suspicious file types [ Warning ] Checking for hidden files and directories [ Warning ] [Press <ENTER> to continue] System checks summary ===================== File properties checks... Required commands check failed Files checked: 137 Suspect files: 122 Rootkit checks... Rootkits checked : 291 Possible rootkits: 0 Applications checks... All checks skipped The system checks took: 5 minutes and 11 seconds All results have been written to the log file (/var/log/rkhunter.log)

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• Solaris 11.2: Functional Deprecation

  - by alanc

  In Solaris 11.1, I updated the system headers to enable use of several attributes on functions, including noreturn and printf format, to give compilers and static analyzers more information about how they are used to give better warnings when building code. In Solaris 11.2, I've gone back in and added one more attribute to a number of functions in the system headers: __attribute__((__deprecated__)). This is used to warn people building software that they’re using function calls we recommend no longer be used. While in many cases the Solaris Binary Compatibility Guarantee means we won't ever remove these functions from the system libraries, we still want to discourage their use. I made passes through both the POSIX and C standards, and some of the Solaris architecture review cases to come up with an initial list which the Solaris architecture review committee accepted to start with. This set is by no means a complete list of Obsolete function interfaces, but should be a reasonable start at functions that are well documented as deprecated and seem useful to warn developers away from. More functions may be flagged in the future as they get deprecated, or if further passes are made through our existing deprecated functions to flag more of them. Header Interface Deprecated by Alternative Documented in <door.h> door_cred(3C) PSARC/2002/188 door_ucred(3C) door_cred(3C) <kvm.h> kvm_read(3KVM), kvm_write(3KVM) PSARC/1995/186 Functions on kvm_kread(3KVM) man page kvm_read(3KVM) <stdio.h> gets(3C) ISO C99 TC3 (Removed in ISO C11), POSIX:2008/XPG7/Unix08 fgets(3C) gets(3C) man page, and just about every gets(3C) reference online from the past 25 years, since the Morris worm proved bad things happen when it’s used. <unistd.h> vfork(2) PSARC/2004/760, POSIX:2001/XPG6/Unix03 (Removed in POSIX:2008/XPG7/Unix08) posix_spawn(3C) vfork(2) man page. <utmp.h> All functions from getutent(3C) man page PSARC/1999/103 utmpx functions from getutentx(3C) man page getutent(3C) man page <varargs.h> varargs.h version of va_list typedef ANSI/ISO C89 standard <stdarg.h> varargs(3EXT) <volmgt.h> All functions PSARC/2005/672 hal(5) API volmgt_check(3VOLMGT), etc. <sys/nvpair.h> nvlist_add_boolean(3NVPAIR), nvlist_lookup_boolean(3NVPAIR) PSARC/2003/587 nvlist_add_boolean_value, nvlist_lookup_boolean_value nvlist_add_boolean(3NVPAIR) & (9F), nvlist_lookup_boolean(3NVPAIR) & (9F). <sys/processor.h> gethomelgroup(3C) PSARC/2003/034 lgrp_home(3LGRP) gethomelgroup(3C) <sys/stat_impl.h> _fxstat, _xstat, _lxstat, _xmknod PSARC/2009/657 stat(2) old functions are undocumented remains of SVR3/COFF compatibility support If the above table is cut off when viewing in the blog, try viewing this standalone copy of the table. To See or Not To See To see these warnings, you will need to be building with either gcc (versions 3.4, 4.5, 4.7, & 4.8 are available in the 11.2 package repo), or with Oracle Solaris Studio 12.4 or later (which like Solaris 11.2, is currently in beta testing). For instance, take this oversimplified (and obviously buggy) implementation of the cat command: #include <stdio.h> int main(int argc, char **argv) { char buf[80]; while (gets(buf) != NULL) puts(buf); return 0; } Compiling it with the Studio 12.4 beta compiler will produce warnings such as: % cc -V cc: Sun C 5.13 SunOS_i386 Beta 2014/03/11 % cc gets_test.c "gets_test.c", line 6: warning: "gets" is deprecated, declared in : "/usr/include/iso/stdio_iso.h", line 221 The exact warning given varies by compilers, and the compilers also have a variety of flags to either raise the warnings to errors, or silence them. Of couse, the exact form of the output is Not An Interface that can be relied on for automated parsing, just shown for example. gets(3C) is actually a special case — as noted above, it is no longer part of the C Standard Library in the C11 standard, so when compiling in C11 mode (i.e. when __STDC_VERSION__ >= 201112L), the <stdio.h> header will not provide a prototype for it, causing the compiler to complain it is unknown: % gcc -std=c11 gets_test.c gets_test.c: In function ‘main’: gets_test.c:6:5: warning: implicit declaration of function ‘gets’ [-Wimplicit-function-declaration] while (gets(buf) != NULL) ^ The gets(3C) function of course is still in libc, so if you ignore the error or provide your own prototype, you can still build code that calls it, you just have to acknowledge you’re taking on the risk of doing so yourself. Solaris Studio 12.4 Beta % cc gets_test.c "gets_test.c", line 6: warning: "gets" is deprecated, declared in : "/usr/include/iso/stdio_iso.h", line 221 % cc -errwarn=E_DEPRECATED_ATT gets_test.c "gets_test.c", line 6: "gets" is deprecated, declared in : "/usr/include/iso/stdio_iso.h", line 221 cc: acomp failed for gets_test.c This warning is silenced in the 12.4 beta by cc -erroff=E_DEPRECATED_ATT No warning is currently issued by Studio 12.3 & earler releases. gcc 3.4.3 % /usr/sfw/bin/gcc gets_test.c gets_test.c: In function `main': gets_test.c:6: warning: `gets' is deprecated (declared at /usr/include/iso/stdio_iso.h:221) Warning is completely silenced with gcc -Wno-deprecated-declarations gcc 4.7.3 % /usr/gcc/4.7/bin/gcc gets_test.c gets_test.c: In function ‘main’: gets_test.c:6:5: warning: ‘gets’ is deprecated (declared at /usr/include/iso/stdio_iso.h:221) [-Wdeprecated-declarations] % /usr/gcc/4.7/bin/gcc -Werror=deprecated-declarations gets_test.c gets_test.c: In function ‘main’: gets_test.c:6:5: error: ‘gets’ is deprecated (declared at /usr/include/iso/stdio_iso.h:221) [-Werror=deprecated-declarations] cc1: some warnings being treated as errors Warning is completely silenced with gcc -Wno-deprecated-declarations gcc 4.8.2 % /usr/bin/gcc gets_test.c gets_test.c: In function ‘main’: gets_test.c:6:5: warning: ‘gets’ is deprecated (declared at /usr/include/iso/stdio_iso.h:221) [-Wdeprecated-declarations] while (gets(buf) != NULL) ^ % /usr/bin/gcc -Werror=deprecated-declarations gets_test.c gets_test.c: In function ‘main’: gets_test.c:6:5: error: ‘gets’ is deprecated (declared at /usr/include/iso/stdio_iso.h:221) [-Werror=deprecated-declarations] while (gets(buf) != NULL) ^ cc1: some warnings being treated as errors Warning is completely silenced with gcc -Wno-deprecated-declarations

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• .NET RegEx "Memory Leak" investigation

  - by Kevin Pullin

  I recently looked into some .NET "memory leaks" (i.e. unexpected, lingering GC rooted objects) in a WinForms app. After loading and then closing a huge report, the memory usage did not drop as expected even after a couple of gen2 collections. Assuming that the reporting control was being kept alive by a stray event handler I cracked open WinDbg to see what was happening... Using WinDbg, the !dumpheap -stat command reported a large amount of memory was consumed by string instances. Further refining this down with the !dumpheap -type System.String command I found the culprit, a 90MB string used for the report, at address 03be7930. The last step was to invoke !gcroot 03be7930 to see which object(s) were keeping it alive. My expectations were incorrect - it was not an unhooked event handler hanging onto the reporting control (and report string), but instead it was held on by a System.Text.RegularExpressions.RegexInterpreter instance, which itself is a descendant of a System.Text.RegularExpressions.CachedCodeEntry. Now, the caching of Regexs is (somewhat) common knowledge as this helps to reduce the overhead of having to recompile the Regex each time it is used. But what then does this have to do with keeping my string alive? Based on analysis using Reflector, it turns out that the input string is stored in the RegexInterpreter whenever a Regex method is called. The RegexInterpreter holds onto this string reference until a new string is fed into it by a subsequent Regex method invocation. I'd expect similar behaviour by hanging onto Regex.Match instances and perhaps others. The chain is something like this: Regex.Split, Regex.Match, Regex.Replace, etc Regex.Run RegexScanner.Scan (RegexScanner is the base class, RegexInterpreter is the subclass described above). The offending Regex is only used for reporting, rarely used, and therefore unlikely to be used again to clear out the existing report string. And even if the Regex was used at a later point, it would probably be processing another large report. This is a relatively significant problem and just plain feels dirty. All that said, I found a few options on how to resolve, or at least work around, this scenario. I'll let the community respond first and if no takers come forward I will fill in any gaps in a day or two.

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• Using jQuery to parse XML returned from PHP script (imgur.com API)

  - by vette982

  Here's my jQuery: var docname = $('#doc').val(); function parseXml(xml) { $(xml).find("rsp").each(function() { alert("success"); }); } $('#submit').click(function() { $.ajax({ type: "GET", url: "img_upload.php", data: "doc=" + docname, dataType: "xml", success: parseXml }); return false; }); Note that #doc is the id of a form text input box and #submit is the submit button's id. If successful, I'd like a simple "success" javascript popup to appear. Here's *img_upload.php* with my API key omitted: <?php $filename = $_GET["doc"]; $handle = fopen($filename, "r"); $data = fread($handle, filesize($filename)); // $data is file data $pvars = array('image' => base64_encode($data), 'key' => <MY API KEY>); $timeout = 30; $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, 'http://imgur.com/api/upload.xml'); curl_setopt($curl, CURLOPT_TIMEOUT, $timeout); curl_setopt($curl, CURLOPT_POST, 1); curl_setopt($curl, CURLOPT_POSTFIELDS, $pvars); $xml = curl_exec($curl); curl_close ($curl); ?> When directly accessed with a GET argument for "doc", img_upload.php file returns the following XML format: <?xml version="1.0" encoding="utf-8"?> <rsp stat="ok"> <image_hash>cxmHM</image_hash> <delete_hash>NNy6VNpiAA</delete_hash> <original_image>http://imgur.com/cxmHM.png</original_image> <large_thumbnail>http://imgur.com/cxmHMl.png</large_thumbnail> <small_thumbnail>http://imgur.com/cxmHMs.png</small_thumbnail> <imgur_page>http://imgur.com/cxmHM</imgur_page> <delete_page>http://imgur.com/delete/NNy6VNpiAA</delete_page> </rsp> What's the problem here? Here's the Imgur API page for reference.

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• Bidirectional FIFO

  - by nunos

  I would like to implement a bidirectional fifo. The code below is functioning but it is not using bidirectional fifo. I have searched all over the internet, but haven't found any good example... How can I do that? Thanks, WRITER.c: #include <stdio.h> #include <unistd.h> #include <string.h> #include <sys/types.h> #include <sys/wait.h> #include <fcntl.h> #define MAXLINE 4096 #define READ 0 #define WRITE 1 int main (int argc, char** argv) { int a, b, fd; do { fd=open("/tmp/myfifo",O_WRONLY); if (fd==-1) sleep(1); } while (fd==-1); while (1) { scanf("%d", &a); scanf("%d", &b); write(fd,&a,sizeof(int)); write(fd,&b,sizeof(int)); if (a == 0 && b == 0) { break; } } close(fd); return 0; } READER.c: #include <stdio.h> #include <unistd.h> #include <string.h> #include <sys/types.h> #include <sys/wait.h> #include <fcntl.h> #include <sys/stat.h> #define MAXLINE 4096 #define READ 0 #define WRITE 1 int main(void) { int n1, n2; int fd; mkfifo("/tmp/myfifo",0660); fd=open("/tmp/myfifo",O_RDONLY); while(read(fd, &n1, sizeof(int) )) { read(fd, &n2, sizeof(int)); if (n1 == 0 && n2 == 0) { break; } printf("soma: %d\n",n1+n2); printf("diferenca: %d\n", n1-n2); printf("divisao: %f\n", n1/(double)n2); printf("multiplicacao: %d\n", n1*n2); } close(fd); return 0; }

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• Error using `loess.smooth` but not `loess` or `lowess`

  - by Sandy

  I need to smooth some simulated data, but occasionally run into problems when the simulated ordinates to be smoothed are mostly the same value. Here is a small reproducible example of the simplest case. > x <- 0:50 > y <- rep(0,51) > loess.smooth(x,y) Error in simpleLoess(y, x, w, span, degree, FALSE, FALSE, normalize = FALSE, : NA/NaN/Inf in foreign function call (arg 1) loess(y~x), lowess(x,y), and their analogue in MATLAB produce the expected results without error on this example. I am using loess.smooth here because I need the estimates evaluated at a set number of points. According to the documentation, I believe loess.smooth and loess are using the same estimation functions, but the former is an "auxiliary function" to handle the evaluation points. The error seems to come from a C function: > traceback() 3: .C(R_loess_raw, as.double(pseudovalues), as.double(x), as.double(weights), as.double(weights), as.integer(D), as.integer(N), as.double(span), as.integer(degree), as.integer(nonparametric), as.integer(order.drop.sqr), as.integer(sum.drop.sqr), as.double(span * cell), as.character(surf.stat), temp = double(N), parameter = integer(7), a = integer(max.kd), xi = double(max.kd), vert = double(2 * D), vval = double((D + 1) * max.kd), diagonal = double(N), trL = double(1), delta1 = double(1), delta2 = double(1), as.integer(0L)) 2: simpleLoess(y, x, w, span, degree, FALSE, FALSE, normalize = FALSE, "none", "interpolate", control$cell, iterations, control$trace.hat) 1: loess.smooth(x, y) loess also calls simpleLoess, but with what appears to be different arguments. Of course, if you vary enough of the y values to be nonzero, loess.smooth runs without error, but I need the program to run in even the most extreme case. Hopefully, someone can help me with one and/or all of the following: Understand why only loess.smooth, and not the other functions, produces this error and find a solution for this problem. Find a work-around using loess but still evaluating the estimate at a specified number of points that can differ from the vector x. For example, I might want to use only x <- seq(0,50,10) in the smoothing, but evaluate the estimate at x <- 0:50. As far as I know, using predict with a new data frame will not properly handle this situation, but please let me know if I am missing something there. Handle the error in a way that doesn't stop the program from moving onto the next simulated data set. Thanks in advance for any help on this problem.

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• file.createNewFile() creates files with last-modified time before actual creation time

  - by Kaleb Pederson

  I'm using JPoller to detect changes to files in a specific directory, but it's missing files because they end up with a timestamp earlier than their actual creation time. Here's how I test: public static void main(String [] files) { for (String file : files) { File f = new File(file); if (f.exists()) { System.err.println(file + " exists"); continue; } try { // find out the current time, I would hope to assume that the last-modified // time on the file will definitely be later than this System.out.println("-----------------------------------------"); long time = System.currentTimeMillis(); // create the file System.out.println("Creating " + file + " at " + time); f.createNewFile(); // let's see what the timestamp actually is (I've only seen it <time) System.out.println(file + " was last modified at: " + f.lastModified()); // well, ok, what if I explicitly set it to time? f.setLastModified(time); System.out.println("Updated modified time on " + file + " to " + time + " with actual " + f.lastModified()); } catch (IOException e) { System.err.println("Unable to create file"); } } } And here's what I get for output: ----------------------------------------- Creating test.7 at 1272324597956 test.7 was last modified at: 1272324597000 Updated modified time on test.7 to 1272324597956 with actual 1272324597000 ----------------------------------------- Creating test.8 at 1272324597957 test.8 was last modified at: 1272324597000 Updated modified time on test.8 to 1272324597957 with actual 1272324597000 ----------------------------------------- Creating test.9 at 1272324597957 test.9 was last modified at: 1272324597000 Updated modified time on test.9 to 1272324597957 with actual 1272324597000 The result is a race condition: JPoller records time of last check as xyz...123 File created at xyz...456 File last-modified timestamp actually reads xyz...000 JPoller looks for new/updated files with timestamp greater than xyz...123 JPoller ignores newly added file because xyz...000 is less than xyz...123 I pull my hair out for a while I tried digging into the code but both lastModified() and createNewFile() eventually resolve to native calls so I'm left with little information. For test.9, I lose 957 milliseconds. What kind of accuracy can I expect? Are my results going to vary by operating system or file system? Suggested workarounds? NOTE: I'm currently running Linux with an XFS filesystem. I wrote a quick program in C and the stat system call shows st_mtime as truncate(xyz...000/1000).

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