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  • Windows Server NTFS volume list file name encodings and any illegal file names

    - by benbradley
    I'm having to deal with a Windows Server (NTFS) file server and our backup application appears to be failing with certain files. According to this https://en.wikipedia.org/wiki/NTFS#Internals NTFS apparently supports file names encoded in UTF-16 but according to their support team, our backup application only supports UTF-8. I'd like to confirm whether this is actually the problem by seeing the file name encoding for myself. The files that are failing appear to be using plain English A-Z letters and other ASCII characters. No accents or non-English letters etc. I suppose even though the letters appear to be plain A-Z the file name could still be encoded in UTF-16. Does anyone know of a utility or script that can recursively go through all files in a directory and show the encoding of the file name? Then I could try renaming to UTF-8 to see if the backup can proceed. I'm not a Windows developer so can't write this up myself. Presumably the encoding of the file name should be stored in the FS somewhere and therefore it should be possible to expose this.

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  • Gvim on Windows 7: ALT codes not working

    - by John Sonderson
    I would like to be able to enter ALT codes in Gvim on Windows 7 as documented on the following site: Alt Codes On Windows (Windows 7 in my case), to generate a character via an ALT code you make sure that the NumLock key on your keypad is toggled on, hold down the ALT key, enter the keycode on the numeric keypad, and then release the ALT key. However this does not work in Gvim on Windows (which ignores the fact that I am pressing the ALT key and just prints to entered keypad key directly onto the screen). How can I get these keystroke combinations to work in Gvim as well? Thanks. EDIT: As the answer below points out, the way to insert non-ASCII characters for which you do not have entries on your keyboard without changing the keyboard layout is as follows: Make sure you are in insert mode, and then type CTRL-V followed by the Unicode character code of interest, for instance: CTRL-V u00E0 (generates à) CTRL-V u00C8 (generates È) CTRL-V u00E8 (generates è) CTRL-V u00E9 (generates é) CTRL-V u00EC (generates ì) CTRL-V u00F2 (generates ò) etc... See for instance http://unicode-table.com/ for a full list of Unicode character codes. The following list of Unicode characters by language may also be useful: http://en.wikipedia.org/wiki/List_of_Unicode_characters In some cases such as this one, though, there might be an easier way to enter special characters (see :help digraphs and :digraphs). For example, while in insert mode you may be able to type the following: CTRL-K E! (yields É) CTRL-K a' (yields á) Note that as the following page shows: http://code.google.com/p/vim/source/browse/runtime/doc/digraph.txt Gvim 7.4 contains an even wider set of default digraphs than Gvim 7.3, thus providing convenience to an even broader set of languages. Regards.

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  • Is there a POSIX pathname that can't name a file?

    - by Charles Stewart
    Are there any legal paths in POSIX that cannot be associated with a file, regular or irregular? That is, for which test -e "$LEGITIMATEPOSIXPATHNAME" cannot succeed? Clarification #1: pathnames By "legal paths in POSIX", I mean ones that POSIX says are allowed, not ones that POSIX doesn't explicitly forbid. I've looked this up, and the are POSIX specification calls them character strings that: Use only characters from the portable filename character set [a-zA-Z0-9._-] (cf. http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap03.html#tag_03_276); Do not begin with -; and Have length between 1 and NAME_MAX, a number unspecified for POSIX that is not less than 14. POSIX also allows that filesystems will probably be more relaxed than this, but it forbids the characters NUL and / from appearing in filenames. Note that such a paradigmatically UNIX filename as lost+found isn't FPF, according to this def. There's another constant PATH_MAX, whose use needs no further explanation. The ideal answer will use FPFs, but I'm interested in any example with filenames that POSIX doesn't expressly forbid. Clarification #2: impossibility Obviously, pathnames normally could be bound to a file. But UNIX semantics will tell you that there are special places that couldn't normally have arbitrary files created, like in the /dev directory. Are any such special places stipulated in POSIX? That is what the question is getting after.

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  • uname -a gives wrong version of kernel in gentoo?

    - by freedrull
    Hi I'm running gentoo and doing uname -a gives the wrong kernel version. tony@P_P-o ~ $ uname -a Linux P_P-o 2.6.27-gentoo-r8 #12 SMP PREEMPT Sun Nov 8 19:46:59 PST 2009 i686 Genuine Intel(R) CPU T2060 @ 1.60GHz GenuineIntel GNU/Linux Running eix gentoo-sources shows that I have a later version than that installed: tony@P_P-o ~ $ eix gentoo-sources [U] sys-kernel/gentoo-sources Available versions: (2.6.16-r13) 2.6.16-r13!b!s (2.6.25-r9) 2.6.25-r9!b!s (2.6.26-r4) 2.6.26-r4!b!s (2.6.27-r8) 2.6.27-r8!b!s (2.6.27-r10) 2.6.27-r10!b!s (2.6.28-r5) 2.6.28-r5!b!s (2.6.28-r6) 2.6.28-r6!b!s (2.6.29-r5) 2.6.29-r5!b!s (2.6.29-r6) 2.6.29-r6!b!s (2.6.30) ~2.6.30!b!s (2.6.30-r3) ~2.6.30-r3!b!s (2.6.30-r4) 2.6.30-r4!b!s (2.6.30-r5) 2.6.30-r5!b!s (2.6.30-r6) 2.6.30-r6!b!s (2.6.30-r7) 2.6.30-r7!b!s (2.6.30-r8) 2.6.30-r8!b!s (2.6.31) ~2.6.31!b!s (2.6.31-r1) ~2.6.31-r1!b!s (2.6.31-r2) ~2.6.31-r2!b!s (2.6.31-r3) ~2.6.31-r3!b!s (2.6.31-r4) ~2.6.31-r4!b!s {build symlink ultra1} Installed versions: 2.6.27-r8(2.6.27-r8)!b!s(07:48:25 PM 06/19/2009)(-build -symlink) 2.6.28-r5(2.6.28-r5)!b!s(12:35:17 PM 06/08/2009)(-build -symlink) 2.6.29-r5(2.6.29-r5)!b!s(07:44:33 PM 06/19/2009)(-build -symlink) 2.6.30-r6(2.6.30-r6)!b!s(11:14:45 PM 10/02/2009)(-build -symlink) Homepage: http://dev.gentoo.org/~dsd/genpatches Description: Full sources including the Gentoo patchset for the 2.6 kernel tree What gives?

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  • Write Fedora.iso to USB and boot it from a Macbook

    - by MTilsted
    I have an .iso image of the full Fedora 16 install (Downloaded from http://fedoraproject.org/en/get-fedora-options#formats as "Fedora 16 DVD") and the question now is: How do I write it on a USB stick, so I can install it on my Mac book? I tried using DD as the install guide said, and that gave me a USB stick which can boot from my PC. But it can't boot from the Mac (The Mac start menu don't show it as a boot option). Edit: I downloaded a live install image, and did this (SSD is my USB 4GB thing) /sbin/mkdosfs -F 32 -n usbdisk /dev/dev/sdd1 sudo livecd-iso-to-disk --format --reset-mbr --efi /tmp/download/Fedora-16-i686-Live-KDE.iso /dev/sdd1 And this produced an image which can boot on my pc but not on my mac. This seems to indicate that the --efi is not working, because if it really was EFI it would not boot on a normal pc, would it? I then tried this: (Difference being that I write the image directory to /dev/sdd instead of /dev/sdd1) but this still will not boot on the Mac (it newer shows up at the startup screen on the Mac). sudo livecd-iso-to-disk --format --reset-mbr --efi /tmp/download/Fedora- PS: My host Linux is Fedora 13.

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  • nmap installation issue

    - by daasf
    vanilla centos with latest updates, installed gcc, and after ./configure:.... Configuration complete. Type make (or gmake on some *BSD machines) to compile. [root@winxp nmap-5.51]# make Makefile:375: makefile.dep: No such file or directory g++ -MM -I./liblua -I./libdnet-stripped/include -I./libpcre -I./libpcap -I./nbase - I./nsock/include -DHAVE_CONFIG_H -DNMAP_NAME=\"Nmap\" -DNMAP_URL=\"http://nmap.org\" - DNMAP_PLATFORM=\"x86_64-unknown-linux-gnu\" -DNMAPDATADIR=\"/usr/local/share/nmap\" - D_FORTIFY_SOURCE=2 main.cc nmap.cc targets.cc tcpip.cc nmap_error.cc utils.cc idle_scan.cc osscan.cc osscan2.cc output.cc payload.cc scan_engine.cc timing.cc charpool.cc services.cc protocols.cc nmap_rpc.cc portlist.cc NmapOps.cc TargetGroup.cc Target.cc FingerPrintResults.cc service_scan.cc NmapOutputTable.cc MACLookup.cc nmap_tty.cc nmap_dns.cc traceroute.cc portreasons.cc xml.cc nse_main.cc nse_utility.cc nse_nsock.cc nse_dnet.cc nse_fs.cc nse_nmaplib.cc nse_debug.cc nse_pcrelib.cc nse_binlib.cc nse_bit.cc > makefile.dep /bin/sh: g++: command not found make: *** [makefile.dep] Error 127 [root@winxp nmap-5.51]# yum install g++ -y Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * addons: mirror.ash.fastserv.com * base: centos.mirror.choopa.net * extras: mirror.trouble-free.net * updates: mirror.nexcess.net Setting up Install Process No package g++ available. Nothing to do [root@winxp nmap-5.51]#

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  • Installing and running a guest OS on KVM-qemu with only serial console access

    - by nixnotwin
    I am trying to installing a bsd distro with virt-installer. With a Linux distro I used this: virt-install -n debian -r 1024 --vcpus=1 --accelerate -v --disk /var/kvm/installation-disks/debian.img,size=6--nographics --network=bridge:br0,model=ne2k_pci,mac=52:54:00:66:68:09 -l http://ftp.de.debian.org/debian/dists/squeeze/main/installer-amd64/current/images/ -x console=ttyS0,115200 This loads the installer directly from the online mirror. With Fedora I used this mirror: http://www.nic.funet.fi/pub/mirrors/fedora.redhat.com/pub/fedora/linux/releases/16/Fedora/x86_64/os/ Are there such mirrors for freebsd or openbsd? The reason I want direct installable ftp/http mirrors is because I can access my physical server only via ssh, and it doesn't have a X server or a window manager to give me a VNC GUI. When I tried installing centos 6 with an online mirror I was able to finish the installation via serial console, but after I rebooted it, the serial console never worked for me. I tried everything possible---editing menu.lst, inttab and securtty files. Fedora 16 booted fine from serial console, but got stuck when it loaded anaconda installer. I tried editing freebsd iso installation media by adding serial console option to boot option. And installation was successful. But couldn't boot into it becuase it wasn't giving console acess. I couldn't edit any files as ufs partition cannot be loaded with write access on my Ubuntu server 10.04. Only debian squeeze worked well, it worked for me even without editing a single configuration file. I want to have CLI versions of fedora/centos and freebsd/openbsd. But, looks like there isn't any hope for me to have them, as I have to depend on a serial console to do everything.

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  • how to download vim script in command line

    - by HaiYuan Zhang
    whenever I want to install a new vim script to the linux server I'm working in , my typical workflow is as the following: surf the plugin's homepage in vim online using fireXXXX download a right version of the plugin to my laptop by click some highlighted link upload the downloaded plugin from my laptop to linux server using winscp which is really inconvenient. I don't know what is the magic behind this : I mean for the same hyperlinki click it in web browser I can let you download it but use wget plus the hyperlink in linux commandline will end up with nothing but error indication. hyperlink in web browser . otherwise I can get the link in web browser and then use wget or some similar tool to actually do the downloding. I try new cool vim scripts quite often , so you can imagin my dismay when have to repeat the tedious action all the time. So if anyone of you knows some tips which can let me downloading the vim scripts in a more "professional" way, I'll appreciate it a lot. post edit : My problem is not find a tool like wget or curl . The problem I met is quite specific to use these tools to download vim script. let's take http://www.vim.org/scripts/script.php?script_id=30 as an example, it's the normal place where one can get the script, at least for me. but I can't find an working url from this page that can feed to wget .

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  • Which is more secure: Tomcat standalone or Tomcat behind Apache?

    - by NoozNooz42
    This question is not about performance, nor about load-balancing, etc. Which would be more secure: running Tomcat in standalone mode or running Tomcat behind apache? The thing is, Tomcat is written in Java and hence it is pretty much immune to buffer overrun/overflow (unless a buffer overrun in a C-written lib used by Tomcat can be triggered, but they're rare [the last I remember was in zlib, many many moons ago] and one heck of a hack to actually exploit), which gets rid of a lot of potential exploits. This page: http://wiki.apache.org/tomcat/FAQ/Security has this to say: There have been no public cases of damage done to a company, organization, or individual due to a Tomcat security issue... there have been only theoretical vulnerabilities found. All of those were addressed even though there were no documented cases of actual exploitation of these vulnerabilities. This, combined with the fact that buffer overrun/overflow are pretty much non-existent in Java, makes me believe that Tomcat in standalone mode is pretty secure. In addition to that, I can install both Java and Tomcat on Linux without needing to be root. The only moment I need to be root is to set up a transparent port 8080 to port 80 forwarding (and 8443 to 443). Two iptables line as root, that's all root is needed for. (I don't know for Apache). Apache is much more used than Tomcat and definitely does not have a security track record as good as Tomcat. What would make Tomcat + Apache more secure? What would make Tomcat + Apache less secure? In short: which is more secure, Tomcat standalone or Tomcat with Apache? (remembering that performance aren't an issue here)

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  • Has anyone managed to build php5-xapian on Ubuntu 12.04?

    - by jetboy
    As Xapian's been dropped from the Ubuntu repositories, I'm attempting to build my own .deb from the instructions here: http://article.gmane.org/gmane.comp.search.xapian.general/8855 http://beeznest.wordpress.com/2011/07/06/howto-build-your-own-binaries-of-php-xapian-bindings-for-debian/ I can only get things to progress beyond the first few seconds by leaving out 'rm debian/control', but if I do, it looks as if the Python and Ruby bindings are building and passing their versions of smoketest correctly. However, the PHP part of the build is failing with this error: /home/charlie/xapian-bindings-1.2.8/php/smoketest.php:38: include(xapian.php): failed to open stream: No such file or directory FAIL: smoketest.php There's a xapian.php file in /home/charlie/xapian-bindings-1.2.8/php/php5/ but if I copy it to /home/charlie/xapian-bindings-1.2.8/php/ or change the path to it in smoketest.php, the build fails right near the start with: dpkg-source: error: aborting due to unexpected upstream changes Unfortunately I'm out of my comfort zone building from source. Anyone got any ideas? Edit post James' answer: Builds fine if I follow instructions exactly. I built it on a test VM initially, but that didn't build the PHP package as PHP itself wasn't installed. Obvious gotcha, but worth mentioning. Installing generated the following error: Setting up php5-xapian (1.2.8-1) ... Processing triggers for libapache2-mod-php5 ... dpkg (subprocess): unable to execute installed post-installation script (/var/lib/dpkg/info/libapache2-mod-php5.postinst): Permission denied ssion denied dpkg: error processing libapache2-mod-php5 (--install): subprocess installed post-installation script returned error exit status 2 Errors were encountered while processing: libapache2-mod-php5 It's only a script for restarting Apache. Stopping Apache before running sudo dpkg -i php5-xapian_*.deb prevents the error. Xapian now shows up in phpinfo(). Job done. Thanks.

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  • How to configure IIS for SVG and web testing with Visual Studio?

    - by macias
    Let's say I have a simple web page with svg image in it: <img src="foobar.svg" alt="not working" /> If I make this page as static html page and view it directly svg is displayed. If I type the address of this svg -- it is displayed. But when I make this as .aspx page and launch it dynamically from Visual Studio I get alt text. If I type the address of this svg (from localhost, not as a local file) -- browser tries to download it instead of displaying. I already defined mime type in IIS (for entire server -- "image/svg+xml") and restarted IIS. Same effect as before. Question: what should I do more? Update WireShark won't work (it is in documentation), I tried also RawCap, but it cannot trace my connection (odd), luckily Fiddler worked: From client: GET http://127.0.0.1:1731/svg/document_edit.svg HTTP/1.1 Host: 127.0.0.1:1731 User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:10.0.1) Gecko/20100101 Firefox/10.0.1 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip, deflate Connection: keep-alive Answer from server: HTTP/1.1 200 OK Server: ASP.NET Development Server/10.0.0.0 Date: Thu, 16 Feb 2012 11:14:38 GMT X-AspNet-Version: 4.0.30319 Cache-Control: private Content-Type: application/octet-stream Content-Length: 87924 Connection: Close <?xml version="1.0" encoding="UTF-8" standalone="no"?> <!-- Created with Inkscape (http://www.inkscape.org/) --> <svg xmlns: *** FIDDLER: RawDisplay truncated at 128 characters. Right-click to disable truncation. *** For the record, here is useful Q&A for Fiddler: http://stackoverflow.com/questions/826134/how-to-display-localhost-traffic-in-fiddler-while-debugging-an-asp-net-applicati

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  • DNS Round-robin, Load Balancing, Load sharing, and failover in 2012

    - by user1089770
    I have been reading many posts on serverfault as well as on other sites regarding all these. What I understand is, Multiple A records(round-robin dns) can be used for both : Load sharing (round-robin, but NOT load-balancing). Many people say that “Load Balancing” but I think there will be no load-balancing because “Balance” means (literally) “compare two(or more) and adjust” (and that is what Real s/w or h/w Load balancers do) but Browsers never do this, instead they randomly select and IP and connect to it. It doesn't have any knowledge about the current load of that server (probably, the IP it picked had the highest load!). Automatic failover (latest browsers only). Yes, I think DNS can be used as a simple failover system (at least in 2012, I dont know when it actually "came in effect"). please refer to : http://webmasters.stackexchange.com/questions/10927/using-multiple-a-records-for-my-domain-do-web-browsers-ever-try-more-than-one and Browser-based DNS failover using multiple A records and http://www.nber.org/sys-admin/dns-failover.html I would like to make sure my assumptions/findings are right. So let me know please.....

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  • Forward real IP through Haproxy => Nginx => Unicorn

    - by Hendrik
    How do I forward the real visitors ip adress to Unicorn? The current setup is: Haproxy => Nginx => Unicorn How can I forward the real IP address from Haproxy, to Nginx, to Unicorn? Currently it is always only 127.0.0.1 I read that the X headers are going to be depreceated. http://tools.ietf.org/html/rfc6648 - how will this impact us? Haproxy Config: # haproxy config defaults log global mode http option httplog option dontlognull option httpclose retries 3 option redispatch maxconn 2000 contimeout 5000 clitimeout 50000 srvtimeout 50000 # Rails Backend backend deployer-production reqrep ^([^\ ]*)\ /api/(.*) \1\ /\2 balance roundrobin server deployer-production localhost:9000 check Nginx Config: upstream unicorn-production { server unix:/tmp/unicorn.ordify-backend-production.sock fail_timeout=0; } server { listen 9000 default; server_name manager.ordify.localhost; root /home/deployer/apps/ordify-backend-production/current/public; access_log /var/log/nginx/ordify-backend-production_access.log; rewrite_log on; try_files $uri/index.html $uri @unicorn; location @unicorn { proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_set_header X-Real-IP $remote_addr; proxy_redirect off; proxy_pass http://unicorn-production; proxy_connect_timeout 90; proxy_send_timeout 90; proxy_read_timeout 90; } error_page 500 502 503 504 /500.html; client_max_body_size 4G; keepalive_timeout 10; }

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  • How can I find a list of all SSE instructions? What happens if a CPU doesn't support SSE?

    - by Blastcore
    So I've been reading about how processors work. Now I'm on the instructions (SSE, SSE2, etc) stuff. (Which is pretty interesting). I have lot of questions (I've been reading this stuff on Wikipedia): I've saw the names of some instructions that were added on SSE, however there's no explanation about any of them (Maybe SSE4? They're not even listed on Wikipedia). Where can I read about what they do? How do I know which of these instructions are being used? If we do know which are being used, let's say I'm doing a comparison, (This may be the most stupid question I've ever asked, I don't know about assembly, though) Is it possible to directly use the instruction on an assembly code? (I've been looking at this: http://asm.inightmare.org/opcodelst/index.php?op=CMP) How does the processor interpret the instructions? What would happen if I had a processor without any of the SSE instructions? (I suppose in the case we want to do a comparison, we wouldn't be able to, right?)

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  • Nginx configuration question

    - by Pockata
    Hey guys, i'm trying to make the autoindex feature only run for my ip address with this code: server{ ... autoindex off; ... if ($remote_addr ~ ..*.*) { autoindex on; } ... } But it doesn't work. It gives my a 403 :/ Can someone help me :) Btw, i'm using Debian Lenny and Nginx 0.6 :) EDIT: Here's my full configuration: server { listen 80; server_name site.com; server_name_in_redirect off; client_max_body_size 4M; server_tokens off; # log_subrequest on; autoindex off; # expires max; error_page 500 502 503 504 /var/www/nginx-default/50x.html; # error_page 404 /404.html; set $myhome /bla/bla; set $myroot $myhome/public; set $mysubd $myhome/subdomains; log_format new_log '$remote_addr - $remote_user [$time_local] $request ' '"$status" "$http_referer" ' '"$http_user_agent" "$http_x_forwarded_for"'; # Star nginx :@ access_log /bla/bla/logs/access.log new_log; error_log /bla/bla/logs/error.log; if ($remote_addr ~ 94.156.58.138) { autoindex on; } # Subdomains if ($host ~* (.*)\.site\.org$) { set $myroot $mysubd/$1; } # Static files # location ~* \.(jpg|jpeg|gif|css|png|js|ico)$ { # access_log off; # expires 30d; # } location / { root $myroot; index index.php index.html index.htm; } # PHP location ~ \.php$ { fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $myroot$fastcgi_script_name; include fastcgi_params; } # .Htaccess location ~ /\.ht { deny all; } } I forgot to mention that when i add the code to remove static files from my access log, the static files cannot be accessed. I don't know if it's relevant :)

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  • Xinerama creates a panning viewport

    - by iblue
    EDIT: I've created a bug report: https://bugs.freedesktop.org/show_bug.cgi?id=48458 My Setup I have 4 monitors, 1920x1080, which are in portrait mode (rotated left). They are connected to two radeon graphic cards. As usual, a picture says more than a thousand words. The problem Everything works fine, when Xinerama is disabled. But when I enable Xinerama, things get weird. When I move the mouse of the screen and return, the screen contents begin to move with the mouse, only on this monitor. It seems like the virtual display size does not match the real screen size, which activates a panning viewport. Any idea how to stop this? The video I created a video to demonstrate the issue: http://www.youtube.com/watch?v=zq_XHji1P24 xorg.conf This is my xorg.conf: Section "ServerLayout" ##################[ Evilness begins here ]############# Option "Xinerama" "on" # <--- Makes it go b0rked! ##################[ End of all evil ]############# Identifier "BOFH Console of Doom" Screen 0 "Screen-0" 0 0 Screen 1 "Screen-1" RightOf "Screen-0" Screen 2 "Screen-2" RightOf "Screen-1" Screen 3 "Screen-3" RightOf "Screen-2" EndSection Section "ServerFlags" Option "RandR" "false" EndSection Section "Module" Load "dbe" Load "dri" Load "extmod" Load "dri2" Load "record" Load "glx" EndSection Section "Monitor" Identifier "Monitor-0" Option "Rotate" "left" EndSection Section "Monitor" Identifier "Monitor-1" Option "Rotate" "left" EndSection Section "Monitor" Identifier "Monitor-2" Option "Rotate" "left" EndSection Section "Monitor" Identifier "Monitor-3" Option "Rotate" "left" EndSection Section "Device" Identifier "Radeon-0-0" Driver "radeon" BusID "PCI:9:0:0" Option "ZaphodHeads" "DVI-0" Screen 0 EndSection Section "Device" Identifier "Radeon-0-1" Driver "radeon" BusID "PCI:9:0:0" Option "ZaphodHeads" "DVI-1" Screen 1 EndSection Section "Device" Identifier "Radeon-1-0" Driver "radeon" BusID "PCI:4:0:0" Option "ZaphodHeads" "DVI-2" Screen 0 EndSection Section "Device" Identifier "Radeon-1-1" Driver "radeon" BusID "PCI:4:0:0" Option "ZaphodHeads" "DVI-3" Screen 1 EndSection Section "Screen" Identifier "Screen-0" Device "Radeon-0-0" Monitor "Monitor-0" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection Section "Screen" Identifier "Screen-1" Device "Radeon-0-1" Monitor "Monitor-1" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection Section "Screen" Identifier "Screen-2" Device "Radeon-1-0" Monitor "Monitor-2" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection Section "Screen" Identifier "Screen-3" Device "Radeon-1-1" Monitor "Monitor-3" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection

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  • My linux server "Number of processes created" and "Context switches" are growing incredibly fast

    - by Jorge Fuentes González
    I have a strange behaviour in my server :-/. Is a OpenVZ VPS (I think is OpenVZ, because /proc/user_beancounters exists and df -h returns /dev/simfs drive. Also ifconfig returns venet0). When I do cat /proc/stat, I can see how each second about 50-100 processes are created and happens about 800k-1200k context switches! All that info is with the server completely idle, no traffic nor programs running. Top shows 0 load average and 100% idle CPU. I've closed all non-needed services (httpd, mysqld, sendmail, nagios, named...) and the problem still happens. I do ps -ALf each second too and I don't see any changes, only a new ps process is created each time and the PID is just the same as before + 1, so new processes are not created, so I thought that process growing in cat /proc/stat must be threads (Yes, seems that processes in /proc/stat counts threads creation too as this states: http://webcache.googleusercontent.com/search?q=cache:8NLgzKEzHQQJ:www.linuxhowtos.org/System/procstat.htm&hl=es&tbo=d&gl=es&strip=1). I've changed to /proc dir and done cat [PID]\status with all PIDs listed with ls (Including kernel ones) and in any process voluntary_ctxt_switches nor nonvoluntary_ctxt_switches are growing at the same speed as cat /proc/stat does (just a few tens/second), Threads keeps the same also. I've done strace -p PID to all process too so I can see if any process is crating threads or something but the only process that has a bit of movement is ssh and that movement is read/write operations because of the data is sending to my terminal. After that, I've done vmstat -s and saw that forks is growing at the same speed processes in /proc/stat does. As http://linux.die.net/man/2/fork says, each fork() creates a new PID but my server PID is not growing! The last thing I can think of is that all process data that proc/stat and vmstat -s show is shared with all the other VPS stored in the same machine, but I don't know if that is correct... If someone can throw some light on this I would be really grateful.

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  • Cannot start Postgres daemon after installing with Yum

    - by Sean the Bean
    I was trying to install Postgres 9.1.4 on Fedora 17 using Yum. If I do: sudo yum install postgres-libs sudo yum install postgres sudo yum install postgis All the installs appear to complete successfully (i.e., no errors), but I cannot start the Postgres daemon using: service postgresql initdb Like the official Postgres download guide says to do (http://www.postgresql.org/download/linux/redhat/). The error says Unknown operation initdb. RPM tells me that it installed psql to /usr/bin/, which I confirmed. It turns out that only a few components installed correctly (psql, pg_dump, pg_configure, and a few others), but most are missing (e.g., pg_ctl and postgres). I've tried several different configurations and had several of my coworkers (with more linux experience than me) look at it, but so far nothing has worked. Two of them have also run into similar issues installing Postgres using apt-get on Ubuntu, which makes me think the rpm isn't doing its job. It seems the only solution to build it from source, which is more robust anyway, but of course it takes longer. I'm wondering, though, if anyone else has run into this issue and/or has successfully installed Postgres on either Fedora or Ubuntu using a package manager like yum or apt-get? Is the rpm broken?

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  • Cannot connect to remote mail server for sending emails in ASP.NET

    - by Dave
    I want to migrate a web application from a Windows Server 2003 to a Windows Server 2008 R2. All works fine except sending emails from the application. If I configure the application to use the smtp server on "localhost" it works, but changing it to the "real" host name (e.g. mail.example.org) no mail is sent. The error message says, that the remote server needs a secure connection or smtp authentication. But since it works when using "localhost" instead of the host name I doubt that this is the problem. Also it's unlikely a problem with the mail server, I also tried it with another one. So for me it seems like the firewall is blocking the outgoing connection to the mail server. I tried to open port 25, but it still did not work. Maybe I just did it the wrong way. Update: For clarifying my setup: I have a Windows Server 2008 R2 with hMailServer installed (set up for some of the hosted domains) For the website I'm talking about I need to use an external mail server (totally different hosting provider) Apparently I was a bit off the track. It seems like it works when using connecting to the local mail server either with the host name "localhost" or "mail.somedomain.com" (while somedomain.com is set up in my mail server). But when using the host name of the external mail server ("mail.externaldomain.com") it seems like it tries to connect to the local server again, although this domain is not set up in the mail server. Thanks to Evan Anderson for the tip to use telnet - why I have not thought of it myself?... :-) Note, the website www.externaldomain.com is hosted on my server but the DNS entries are maintained by the other hosting provider. "externaldomain.com" is the only entry which points to my server all other records (MX, subdomains) are pointing to the other server. So I think the question is now, how do i bring my server to connect to the external mailserver. Do I have to configure this in my mail server or is it a windows server thing?

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  • fedora, dhcpd fails to start

    - by soxs060389
    History: I got a tiny shiny plugserver which I want to plug to my ADSL router (or however you want to call it) on one end (eth0), and the other end (eth1) I want to run a dhcp server for my LAN. ATM I am stuck with getting LAN to work. OS is fedora 12. I configured my /etc/dhcp/dhcpd.conf like this: # # DHCP Server Configuration file. # see /usr/share/doc/dhcp*/dhcpd.conf.sample # see 'man 5 dhcpd.conf' # option domain-name "unknown.org"; option domain-name-servers 192.168.44.1; option subnet-mask 255.255.255.0; option broadcast-address 192.168.44.255; default-lease-time 86400; max-lease-time 172800; subnet 192.168.44.0 netmask 255.255.255.0 { host fedorabigbox { hardware ethernet 00:19:66:8E:61:74; fixed-address 192.168.44.21; } #host mobile #{ # hardware ethernet ***; # fixed-address 192.168.44.22; #} range 192.168.44.100 192.168.44.110; option routers 192.168.44.1; } # this is just dummy, as read many howtos, some suggesting to add a subnet blah netmask blah for each interface subnet 192.168.33.0 netmask 255.255.255.0 { range 192.168.33.100 192.168.33.110; option routers 192.168.33.1; } But the server fails to start when trying to start it via /etc/init.d/dhcpd start In general it would be nice if someone can point me to a in detail explanation of how network works, I am pretty new to this stuff. More concrete question: How to point the subnets to eth1 and the other to eth0, how can this be achieved? Does someone see any errors or flaws? Syntax should be correct, allready checked that with the dhcpd syntax check. Thanks for any help

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  • Connection refused in ssh tunnel to apache forward proxy setup

    - by arkascha
    I am trying to setup a private forward proxy in a small server. I mean to use it during a conference to tunnel my internet access through an ssh tunnel to the proxy server. So I created a virtual host inside apache-2.2 running the proxy, the proxy_http and the proxy_connect module. I use this configuration: <VirtualHost localhost:8080> ServerAdmin xxxxxxxxxxxxxxxxxxxx ServerName yyyyyyyyyyyyyyyyyyyy ErrorLog /var/log/apache2/proxy-error_log CustomLog /var/log/apache2/proxy-access_log combined <IfModule mod_proxy.c> ProxyRequests On <Proxy *> # deny access to all IP addresses except localhost Order deny,allow Deny from all Allow from 127.0.0.1 </Proxy> # The following is my preference. Your mileage may vary. ProxyVia Block ## allow SSL proxy AllowCONNECT 443 </IfModule> </VirtualHost> After restarting apache I create a tunnel from client to server: #> ssh -L8080:localhost:8080 <server address> and try to access the internet through that tunnel: #> links -http-proxy localhost:8080 http://www.linux.org I would expect to see the requested page. Instead a get a "connection refused" error. In the shell holding open the ssh tunnel I get this: channel 3: open failed: connect failed: Connection refused Anyone got an idea why this connection is refused ?

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  • Finding custom printer-specific options on *nix

    - by enbuyukfener
    Hey all, I have a printer set up using CUPS (FujiXerox Document Center 1100), it is named DC1100. There are capabilities of the printer that are not shows as options of the printer as listed by: lpoptions -l -d DC1100 The output is below: PrintoutMode/Printout Mode: Draft *Normal High Photo InputSlot/Media Source: Upper Lower MultiPurpose LargeCapacity Manual *Standard PageSize/Page Size: *Letter A4 C5 C6 COM10 DL Executive Legal Monarch Statement PageRegion/PageRegion: Letter A4 C5 C6 COM10 DL Executive Legal Monarch Statement STP_Brightness/Brightness: 0.00 0.02 0.04 [snip] 2.00 STP_Contrast/Contrast: 0.00 0.05 0.10 0.15 [snip] 4.00 STP_ColorCorrection/Color Correction: Accurate Bright Density [snip] Uncorrected STP_DitherAlgorithm/Dither Algorithm: Adaptive EvenTone Fast [snip] VeryFast STP_EnableDensity/Density Enable: *Disabled Enabled STP_Density/Density Value: 0.1 0.2 0.3 0.4 [snip] 8.0 STP_EnableGamma/Composite Gamma Enable: *Disabled Enabled STP_Gamma/Composite Gamma Value: 0.10 0.15 0.20 0.25 [snip] 4.00 STP_LinearContrast/Linear Contrast Adjustment: *False True STP_Duplex/Double-Sided Printing: DuplexNoTumble DuplexTumble *None Resolution/Rendering Resolution: *FromPrintoutMode 150x150dpi 300x300dpi 600x600dpi OutputType/Output Type: *FromPrintoutMode BlackAndWhite Grayscale STP_ImageType/Image Type: *FromPrintoutMode Photo Graphics LineArt None Text TextGraphics STP_Resolution/Resolution: *FromPrintoutMode 150dpi 300dpi 600dpi I am particularly looking for options for: "secure print" (possibly by setting a mode and setting a username) stapling hole punching Perhaps I need a vendor specific driver/PPD file? If so, any pointers as I have no idea where to look for one. I haven't been able to find one on the official site or on sites such as http://www.openprinting.org

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  • Port Forwarding failing only to Ubuntu servers from Draytek router

    - by Rufinus
    I know this is a kinda unusal question, but Draytek support (..which is very eager to solve the issue) seems to reach its limits. Scenario: Draytek Vigor Multiwan router with current firmware. Multiple WAN IP Aliases on one of the wan ports DMZ (or port forwarding doesnt matter) from wan ip alias to internal host currently i have two internal hosts: 192.168.0.51 (Ubuntu) 192.168.0.53 (Debian) both should be accessible from outside via one of the wan ip aliases. both are accessible with their internal ip's at all times (!) If the router gots restartet, both external ips are forwarding to its internal hosts. But after a few minutes up to 2 hours, the ubuntu host is no longer reachable via its external interface. The debian hosts on the other hand is reachable. In what does ubuntu differs from debian ? I know at least of one user with the exact same problem. see http://ubuntuforums.org/showthread.php?p=10994279 Any ideas ? TIA EDIT: via ping diagnostics directly on vigor, 192.168.0.53 is pingable, 192.168.0.51 is not. but both hosts are perfectly reachable from anywhere inside the network. if i restart ubuntu networking it works again for a short time.... i'm out of ideas.. EDIT 2: after further investigation, i noticed a ping from .51 to the network (or a host in the internet) is enough to make the port-forwarding working again. So i will add an Cronjob as a "keep-alive" ping. This will solve the problem, but the reason for this behaivor is still in the dark. Thanks to all commentors.

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  • Ubuntu purple splash screen with blinking pixels?

    - by joxnas
    I had ubuntu 9.10 I upgraded to 10.04 after solving some problems (freeze at boot). Since then, I don't have the ubuntu's logo showing up when I boot, but a purple screen with some blinking pixels. I didn't care much about it... but today my computer took too long at that screen (normally it was just 1/4 second, but today it was like a minute..). And it happened like 4 or 5 times in a row (Only at the 5th time I realised that it was not freezing up, but it simply would took more time) After a reboot, it is again 1/4 second of purple screen but I don't want this problem to return.. so I want to get rid of the purple screen (I think it is an indicator of the problem) Well, I already installed the graphic drivers (going to system admnistration hardware drivers). But it didn't solve anything. (I don't know if it is even related) I searched in google, found something old (2006) and I think it maybe has some relation with my problems .. http://ubuntuforums.org/archive/index.php/t-294692.html But couldn't understand the conversation (i'm a linux novice) Sorry for my horrible english.. I would appreciate any help! My hardware: ATI Mobility Radeon 4650 HD P7450 2.13Ghz Core 2 Duo

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  • How is made sure magnetic or electric fields from devices like transformers or fans close nearby do

    - by matnagel
    Fans and transformers which are inside the server case create magnetic and electric fields. Electric fields can be easily shielded, but what about magnetic fields, they can only be shielded with high cost materials like mu metal http://en.wikipedia.org/wiki/Mu-metal If a hard drive is installed too close to an intense transformer field, how is the magnetically stored information on the ferromagnetic surfaces of the disk kept safe? Even if drives are shielded, where are the limits? Is there some technical investigation or recommendation from manufacturers about this? (I never heard about something and never had any problem but I am interested in some facts. This is much preferred over what you believe or a habit you developed. Please try to give some solid infromation.) I have built and repaired many servers and sometimes I did put the harddrive on top of the power supply. Edit: This question is not about frequencies that could affect the drive via the power or data connectors of the drive, those are electronically decoupled and that's another question. Edit 2: The wikipedia page states that the motor inside the drive is shielded with mu metal. It is obvious that manufactureres have to take care of this. This question is about such influences from outside the drive.

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