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• Can't find disk usage in one directory

  - by Xster

  Similar questions are asked frequently but no suggested answers solved my issue. I have some disk space usage that I can't find as well. In df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda1 144183992 136857180 2652 100% / udev 2013316 4 2013312 1% /dev tmpfs 808848 876 807972 1% /run none 5120 0 5120 0% /run/lock none 2022116 76 2022040 1% /run/shm overflow 1024 0 1024 0% /tmp I checked the inodes, I checked lsof for +L1 or deleted files, I rebooted, I checked for files hidden behind mounts but none of them were the issue. It grows periodically and I'm running out of things to delete to feed the beast. It's all in the home directory of the only user I have. In du in ~ du -h --max-depth=1 192K ./.nv 2.1M ./.gconf 12K ./Pictures 1.6M ./.launchpadlib 12K ./Public 24K ./.TemporaryItems 8.9M ./.cache 12K ./Network Trash Folder 28K ./.vnc 11M ./.AppleDB 48K ./.subversion 1.9G ./.xbmc 8.0K ./.AppleDesktop 12K ./.dbus 81M ./.mozilla 12K ./Music 160K ./.gnome2 44K ./Downloads 692K ./.zsh 236K ./.AppleDouble 64K ./.pulse 4.0K ./.gvfs 1.4M ./.adobe 44K ./.pki 44K ./.compiz-1 168K ./.config 1.4M ./.thumbnails 12K ./Templates 912K ./.gstreamer-0.10 8.0K ./.emacs.d 92K ./Desktop 1.3M ./.local 12K ./Ubuntu One 12K ./Documents 296K ./.fontconfig 12K ./.qt 12K ./.gnome2_private 20K ./.ssh 20K ./.mission-control 12K ./Videos 12K ./Temporary Items 640K ./.macromedia 124G . I can't find a way to figure out how it got to that 124G in that directory. There are no mount points in home.

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• Lag in Windows 7 with Zepto Znote 6224W

  - by Xink64

  Hi! Why does my Zepto Znote 6224W Laptop with Windows 7 make these small laggy moves whenever I use it? First I installed Windows 7 64 bit because of the memorycap in Windows 7 32 bit, but soon I realized that the system was lagging randomly. It was very annoying whenever I listened to music, because of the sudden lags. Then I tried everything with drivers; Chipset, Soundcard, Graphicscard, and so on. No luck. I then installed Windows 7 32 bit and this reduced the amount of lags but they are still here. I haven't tried bios upgrade since my bios should be newest according to now the now bankrupt Zepto company. My specifications: Zepto Znote 6224W Intel T8300 Intel Chipset PM965 PC-5300 4gb Nvidia 8600M GT Zepto's rebranded bios: Phoenix Technologies LTD Z14ND06 - Date: 12/20/2007 Harddrive: 320 GB 5400 RPM which I replaced with a Kingston SSDnow 40 GB. No luck either. I haven't tried Windows Vista on the machine though, but I would like to keep Windows 7.

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• How can I do an SELINUX filesystem relabel without rebooting first?

  - by Skaperen

  I can touch the file /.autorelabel and reboot and during the initialization coming back up it will do the SELINUX relabel for me. But I want to do this in a different situation where the system has just been copied to a hard drive image. I can chroot to the originating file tree, or chroot to the just populated device image and run it. I just can't find anything that says what to be run. This image is being made into an AMI on AWS EC2, and contains CentOS 6.3. But the time it takes to relabel is too long (6 minutes or more). I want to move the relabel to the image build where the extra time is not an issue (because it happens once instead of every time an AMI is launched). I can make this relabel be the very last thing just before the filesystem is unmounted for the last time until it becomes an AMI and will launch. I just need to know what to call to do it. I have searched man pages with no luck. I have searched system init scripts but where /.autorelabel is detected, it is unclear what is happening. Documents like http://www.centos.org/docs/5/html/5.2/Deployment_Guide/sec-sel-fsrelabel.html only tell how to do things that still really do the work after a reboot. I need to have the work doing BEFORE the "reboot" (unmount, build AMI, and launch ready to go). The big point is ... yes there will be a reboot ... but I want the relabel work to be done before that so it won't be done every time an AMI is launched (because it takes so long).

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• How does one change the UUID of a Volume on Mac OSX 10.6?

  - by Emmel

  Does anyone know how to change the UUID of a Volume? The background for this question is that I have a duplicate UUID issue: I have /Volumes/OldMacHD with a UUID of XYZ. I have /Volumes/Mirror1 with a UUID of XYZ (same UUID! I bet that's because OldMacHD USED to be part of this mirror). I got these UUIDs via 'diskutil info /dev/thatdisknumber | grep UUID'. I'd like to change the UUID of 'Mirror1'. I discovered by chance the 'hfs.util' utility, since these are HFS volumes after all. The man page for hfs.util says that if you issue the -s flag, this changes the UUID. However, if you type hfs.util all by itself, it doesn't show you the -s option at all, just every option besides that! Grr. I tried it anyway: sudo /System/Library/Filesystems/hfs.fs/hfs.util -s /dev/disk4 (the raid volume). Nothing happens. No error message, no success message. UUID exactly the same. I tried it while the volume was unmounted. Any ideas?

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• Tablet as Car Computer

  - by luxurychair

  Okay, so forward this off to the right place if this isn't the right place to ask this question. I want to use a tablet computer as a car-computer. Minimum features would be to run my music (through iPod, Pandora, whatever I want) and GPS Navigation, watch TV or movies while I'm parked waiting for people, and the hard one: it needs to answer my phone calls with a pleasant interface much like in-dash systems do. It needs to detect that my phone is ringing in my pocket and provide an on-screen answer/ignore and then route the audio through the cars speakers. It would be nice to dial out and have address book access, but that is somewhat secondary. I have an iPhone myself and I figured that an iPad with 3G might make a good system for this - but I'm open to other options if an iPad can't do everything I need. I'm willing to write code, and I'm willing to jailbreak one or both devices. I haven't done much work in Obj-C, but I'm not opposed to learning a new language for this project. It's self enrichment for the most part, as I'm sure I can buy an indash entertainment system for less. Does anyone have experience with the iPhone/iPad SDK that can tell me whether or not it would be possible to get it an iPad to answer my calls in the car? What about an Android tablet? (that Adam looks promising, too).

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• Advice needed for a home network setup (hardware & software) to handle many clients and potentially heavy traffic

  - by posdef

  I have recently decided to re-structure the home network of our flatshare here. Here's a quick outline of the situation. I envision to have the following 4 devices connected to the router via cable: Xbox 360 IP phone Printer QNAP server (Web, File and Multimedia) We are three people living here, so on top of that there will be to 5-6 computers/mobile devices connecting as wireless clients. My goal is to be able to transfer files (when needed) between the computer and the Multimedia server, which I can reach via 360 and play on the TV. I also would like to keep a high level of security; right now I have the encryption on WPA2 and MAC filtering. I don't believe the web server will get heavy traffic, though I would like to have it responsive. Likewise, I don't have a habit of downloading via torrent etc, but I greatly appreciate my network being responsive and fast, especially when I am browsing or streaming high quality media. Now my questions are: is this setup feasible? smart? efficient? can this be improved somehow? my current router (D-Link DI624) and the previous one (DI-524) used to have spontaneous drops in network, which I find highly irritating. I don't believe in my router, especially now that it completely crashed when I was test-running the setup by transferring a large media file to server while xbox was playing music from the server, and two computers browsing the net. Do I need to get new hardware, if so, any recommendations for a reliable and fast router?

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• mrepo and grouplist/groupinstall?, mrepo not working as expected with group

  - by user52874

  All, I'm trying to set up mrepo so we can have internal repositories. After quite the slog, things seem to be working as expected EXCEPT for groups. From man createrepo: EXAMPLES Here is an example of a repository with a groups file. Note that the groups file should be in the same directory as the rpm packages (i.e. /path/to/rpms/comps.xml). createrepo -g comps.xml /path/to/rpms So here's what I'm doing: wget -c http://ftp.scientificlinux.org/linux/scientific/6/x86_64/os/repodata/comps-sl6-x86_64.xml cp comps-sl6-x86_64.xml /var/mrepo/SL6-x86_64/os/Packages/comps-sl6-x86_64.xml createrepo -g comps-sl6-x86_64.xml /var/mrepo/SL6-x86_64/os/Packages/ lots of output, no apparent errors or warnings BUT.. from a client: yum grouplist Loaded plugins: refresh-packagekit Setting up Group Process Error: No group data available for configured repositories Here's /etc/mrepo.conf: ### Configuration file for mrepo ### The [main] section allows to override mrepo's default settings ### The mrepo-example.conf gives an overview of all the possible settings [main] srcdir = /var/mrepo wwwdir = /var/www/mrepo confdir = /etc/mrepo.conf.d arch = x86_64 mailto = root@localhost smtp-server = localhost pxelinux = /usr/lib/syslinux/pxelinux.0 tftpdir = /tftpboot #rhnlogin = username:password ### Any other section is considered a definition for a distribution ### You can put distribution sections in /etc/mrepo.conf.d ### Examples can be found in the documentation. Here's /etc/mrepo.conf.d/sl6.mrepo: ### Scientific Linux 6 [SL6] name = Scientific Linux 6 release = 6 arch = x86_64 metadata = repomd repoview os = rsync://rsync.scientificlinux.org/scientific/$release/$arch/os/ updates = rsync://rsync.scientificlinux.org/scientific/$release/$arch/updates/ security = rsync://rsync.scientificlinux.org/scientific/$release/$arch/updates/security/ fastbugs = rsync://rsync.scientificlinux.org/scientific/$release/$arch/updates/fastbugs/

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• periodically unable to play media

  - by avorum

  So I don't know if this is right place to ask this at all but I've gotten good help here before so I thought I'd ask. For the last year or so periodically my computer would start refusing to play media. In browser players would say they were playing but they weren't. No audio and the video wasn't moving forward although it would show the first frame of the video to be shown. iTunes would act similarly, thinking it was playing without actually playing any music. This persists across browsers, various application categories, etcetera. It can often be fixed by rebooting but it is only a short term solution. Does anyone know of anything that might cause this erratic behavior? I'm using Windows 7 64bit. If additional information would help please ask. Alternatively, if this isn't the right site for this I would greatly appreciate some direction to a site better suited to my question. Thanks in advance for any help.

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• Error during configuring kerberos5 using macports

  - by ario

  While trying to install libmemcached via MacPorts, I hit the following issue: libmemcached @0.40 +universal ---> Computing dependencies for libmemcached ---> Dependencies to be installed: cyrus-sasl2 kerberos5 ---> Configuring kerberos5 Error: org.macports.configure for port kerberos5 returned: configure failure: command execution failed Error: Failed to install kerberos5 It tells me to look in the log for details. Here's the last bit of the log file: :info:configure checking for setupterm in -lcurses... no :info:configure checking for setupterm in -lncurses... no :info:configure checking for tgetent... no :info:configure configure: error: Could not find tgetent; are you missing a curses/ncurses library? :info:configure configure: error: /bin/sh './configure' failed for appl/telnet :info:configure Command failed: cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_net_kerberos5/kerberos5/work/krb5-1.7.2/src" && ./configure --prefix=/opt/local --disable-dependency-tracking --mandir=/opt/local/share/man :info:configure Exit code: 1 :error:configure org.macports.configure for port kerberos5 returned: configure failure: command execution failed :debug:configure Error code: NONE :debug:configure Backtrace: configure failure: command execution failed while executing "$procedure $targetname" :info:configure Warning: targets not executed for kerberos5: org.macports.activate org.macports.configure org.macports.build org.macports.destroot org.macports.install :error:configure Failed to install kerberos5 :debug:configure Registry error: kerberos5 not registered as installed & active. invoked from within "registry_active ${subport}" invoked from within "$workername eval registry_active \${subport}" :notice:configure Please see the log file for port kerberos5 for details: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_ports_net_kerberos5/kerberos5/main.log It seems to say it's missing ncurses. Looks like it's there though, since if I run port installed I see these: ncurses @5.7_0 ncurses @5.9_1 (active) ncursesw @5.7_0 Any ideas on how to get around this error?

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• SOCKS5 proxy only, git wants to use ssh to xx.xx.xx.xx - forward? - mac os

  - by AlexAtNet

  I have SOCKS5 proxy configured and want to work with the git repository, originally cloned from ssh:... So when it tries to connect the error "Network is unreachable" appears. There are a few possible solutions: Use GIT URL rewriting and use https:// with proxy option. Probably should work well for github repositories. Use port forwarding and something like iptables/ipfw to rewrite address xx.xx.xx.xx:22 to 127.0.0.1:10yyy I'm trying to do #2. I have limited knowledge in this area, but know that I should use something like iptables. But then I discovered that on a Mac I should use ipfw. And then in the ipfw man page it told me "This utility is DEPRECATED. Please use pfctl(8) instead". So what I want to do is to rewrite xx.xx.xx.xx:22 to 127.0.0.1:10yyy and remove this rewriting. As I read, the pf.conf line should be rdr proto tcp from 127.0.0.1 to xx.xx.xx.xx port 22 -> 127.0.0.1 port 10yyy But how to add (and remove) this rule from command line?

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• VNC as a Support Tool Over the Internet

  - by dosboy

  I'd like to set up an environment where I can use VNC to remotely support my clients over the internet. No VPNs involved. I've used the UltraVNC repeater in the past, but the problem is that it requires a dedicated Windows server. What I'd like to do is as follows: VNC Client (me) - NAT - Internet - NAT - VNC Server (the person I'm offering support to) I'd basically like the same functionality that the UltraVNC repeater offers, but the only internet environment I have to host something on is a Linux shared server (standard hosting - PHP, Apache, etc.). Requirements: Multiple platform support for both Client and Server - specifically Mac and Windows Allows for connection with multiple NATs involved (Client and Server side) Will allow me to use my existing hosting environment for any repeater that might be involved I believe the way this would work is that the Server (the person I'm offering support to) when online would connect to a listener on the internet. When they needed support I would connect my Client to the same listener, see them connected, and use the listener (man-in-the-middle) to piggyback my Client to connect to their Server. I'm open to using any software (not limiting myself to VNC) but would prefer a FOSS solution (which is why I'm leaning towards VNC). Any advice would be greatly appreciated.

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• Downmix ALL SYSTEM audio to mono - Windows 7

  - by Mike K.

  I'm deaf in one ear and want to use my headphones when playing a game and talking with my friends on Skype/TS/Mumble/etc while also sometimes listening to music. I need ALL my system audio to be downmixed to mono so that my ONE hearing ear gets ALL audio channels instead of split stereo audio. No, none of the other similar questions on superuser have a solution. My headphone properties does not have a 'Mono' option, I don't have a 'Headphone Virtualization' option, and my Realtek HD audio driver software doesn't have these options either (driver was updated 11/14/2012). Don't even talk about setting the balance of one side of the headphones to 0. You're not paying attention if you suggest that. JACK and Virtual Audio Cable didn't work. It's possible I configured them wrong, but I followed the steps I found in related questions and still got split stereo out. TL;DR I need a viable, working, software solution (I say software because I have a USB headset) for forcing ALL system audio to mono so that I can hear literally everything through the one earpiece. Thanks!

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• bind9 dlz/mysql at ubuntu segfault libmysqlclient.so

  - by Theos

  I have a big problem. I installed the bind9 nameserver to three different computer. two Ubuntu 10.04.4 LTS, and one Ubuntu 11.10 I compiled it 9.7.0, 9.7.3, 9.9.0 with this method: ./configure --prefix=/usr --sysconfdir=/etc/bind --localstatedir=/var \ --mandir=/usr/share/man --infodir=/usr/share/info \ --enable-threads --enable-largefile --with-libtool --enable-shared --enable-static \ --with-openssl=/usr --with-gssapi=/usr --with-gnu-ld \ --with-dlz-mysql=yes --with-dlz-bdb=no \ --with-dlz-filesystem=yes --with-geoip=/usr make make install After the set up for dlz/mysql, the BIND server is working perfetctly until 5-30 minute long. Ahter i got segfault. I resolve temporaly the problem with a simple process watchdog, and if the named is stopped, the watchdog is restart it, but this is not a good idea in long therm. My log output is: messages: Apr 13 19:33:51 dnsvm kernel: [ 8.088696] eth0: link up Apr 13 19:33:58 WATCHDOG: named not running. Restarting Apr 13 19:35:08 dnsvm kernel: [ 87.082572] named[1027]: segfault at 88 ip b71c4291 sp b5adfe30 error 4 in libmysqlclient.so.16.0.0[b714e000+1aa000] Apr 13 19:35:08 WATCHDOG: named not running. Restarting Apr 13 19:35:08 dnsvm kernel: [ 87.457510] named[1423]: segfault at 68 ip b71d6122 sp b52f0a40 error 4 in libmysqlclient.so.16.0.0[b7160000+1aa000] Apr 13 19:35:09 WATCHDOG: named not running. Restarting Apr 13 19:41:56 dnsvm kernel: [ 494.838206] named[1448]: segfault at 88 ip b731c291 sp b5436e30 error 4 in libmysqlclient.so.16.0.0[b72a6000+1aa000] Apr 13 19:41:57 WATCHDOG: named not running. Restarting Apr 13 19:57:26 dnsvm kernel: [ 1424.023409] named[2976]: segfault at 88 ip b72d1291 sp b6beee30 error 4 in libmysqlclient.so.16.0.0[b725b000+1aa000] Apr 13 19:57:26 WATCHDOG: named not running. Restarting Apr 13 20:11:56 dnsvm kernel: [ 2294.324663] named[6441]: segfault at 88 ip b7357291 sp b6473e30 error 4 in libmysqlclient.so.16.0.0[b72e1000+1aa000] Apr 13 20:11:57 WATCHDOG: named not running. Restarting syslog: http://pastebin.com/hjUyt8gN the first server is a native, normal x64 server (u1004lts), the second is virtualised server (u11.10) the third is also virtualised (10.04lts) This servers is only for dns providing with mysql server db. But the problem is be with all server, and all bind version. named.conf: http://pastebin.com/zwm1yP7V Can anybody help me, or any good idea?

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• Tell VLC where to look for plugins.dat file

  - by puk

  I am trying to build vlc from source (I will include installation script below), but when I try to run vlc I get the following error main libvlc warning: cannot read /home/user/downloads/vlc3/vlc/src/.libs/vlc/plugins/plugins.dat (No such file or directory) Why is it even looking in that non existant directory? The plugins.dat file is in /usr/lib/vlc/plugins/. I tried export VLC_PLUGIN_PATH=/usr/lib/vlc/plugins/ But it still looks in that non existent path. I can create a symbolic link, but that is a terrible way to do it. If in 6 months I delete my downloads folder, all of a sudden my vlc will break. Here is the script I am running to install: ./configure --enable-rpi-omxil --enable-dvbpsi --enable-x264 --enable-xcb --with-x --enable-xvideo --enable-sdl --enable-avcodec --enable-avformat --enable-swscale --enable-mad --enable-a52 --enable-libmpeg2 --enable-dvdnav --enable-faad --enable-vorbis --enable-ogg --enable-theora --enable-mkv --enable-freetype --enable-fribidi --enable-speex --enable-flac --enable-live555 --enable-caca --enable-skins2 --enable-alsa --enable-ncurses --enable-debug --enable-lirc --enable-live555 --enable-shout --enable-taglib --enable-vcdx --enable-realrtsp --enable-svg --enable-dvdread --enable-dc1394 --enable-twolame --enable-dirac --enable-aa --enable-jack --enable-bluray --enable-opencv --enable-sftp --enable-pulse --enable-projectm --enable-vsxu --enable-atmo --enable-glspectrum '--with-extra-libs=/usr/local/lib' '--with-extra-includes=/usr/local/include' '--x-libraries=/usr/local/lib' '--x-includes=/usr/local/include' '--prefix=/usr/local' '--mandir=/usr/local/man' '--infodir=/usr/local/info/' EDIT: I am using the following version: VLC media player 2.2.0-git Weatherwax (revision 2.1.0-git-1168-g5804dd1) And the --plugin-path option is no longer supported.

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• Compile PHP 5.3.2 with intl extension on Snow Leopard 10.6.3

  - by fsb

  Does anyone have some tips on compiling PHP's intl extension on PHP? I'm getting compile errors each way I try it and I've been googling for ages and getting nowhere. Any help greatly appreciated. When make gets to the huge gcc command to compile libphp5.bundle, I get the following error: Undefined symbols: "___gxx_personality_v0", referenced from: icu_4_2::MessageFormatAdapter::getArgTypeList(icu_4_2::MessageFormat const&, int&)in msgformat_helpers.o _umsg_parse_helper in msgformat_helpers.o _umsg_format_arg_count in msgformat_helpers.o _umsg_format_helper in msgformat_helpers.o CIE in msgformat_helpers.o ld: symbol(s) not found collect2: ld returned 1 exit status make: *** [libs/libphp5.bundle] Error 1 My compile commands are: MACOSX_DEPLOYMENT_TARGET=10.6 CFLAGS="-arch x86_64 -g -Os -pipe -no-cpp-precomp" CCFLAGS="-arch x86_64 -g -Os -pipe" CXXFLAGS="-arch x86_64 -g -Os -pipe" LDFLAGS="-arch x86_64 -bind_at_load" export CFLAGS CXXFLAGS LDFLAGS CCFLAGS MACOSX_DEPLOYMENT_TARGET ./configure --prefix=/usr \ --mandir=/usr/share/man \ --infodir=/usr/share/info \ --sysconfdir=/private/etc \ --with-apxs2=/usr/sbin/apxs \ --enable-cli \ --with-config-file-path=/etc \ --with-libxml-dir=/usr \ --with-openssl=/usr \ --with-zlib=/usr \ --with-bz2=/usr \ --with-curl=/usr \ --with-gd \ --with-jpeg-dir=/src/jpeg/jpeg-local \ --with-png-dir=/usr/X11R6 \ --with-freetype-dir=/usr/X11R6 \ --with-xpm-dir=/usr/X11R6 \ --with-ldap=/usr \ --with-ldap-sasl=/usr \ --enable-mbstring \ --enable-mbregex \ --with-mysql=mysqlnd \ --with-mysqli=mysqlnd \ --with-pdo-mysql=mysqlnd \ --with-mysql-sock=/var/mysql/mysql.sock \ --with-iodbc=/usr \ --enable-shmop \ --with-snmp=/usr \ --enable-soap \ --enable-sockets \ --enable-sysvmsg \ --enable-sysvsem \ --enable-sysvshm \ --with-xmlrpc \ --with-iconv-dir=/usr \ --with-xsl=/usr \ --with-pcre-regex=/src/pcre/pcre-local/usr/local \ --with-pcre-dir=/src/pcre/pcre-local/usr/local \ --with-icu-dir=/usr/local \ --enable-intl export EXTRA_CFLAGS="-lresolv" make

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• Advice needed: warm backup solution for SQL Server 2008 Express?

  - by Mikey Cee

  What are my options for achieving a warm backup server for a SQL Server Express instance running a single database? Sitting beside my production SQL Server 2008 Express box I have a second physical box currently doing nothing. I want to use this second box as a warm backup server by somehow replicating my production database in near real time (a little bit of data loss is acceptable). The database is very small and resources are utilized very lightly. In the case that the production server dies, I would manually reconfigure my application to point to the backup server instead. Although Express doesn't support log shipping natively, I am thinking that I could manually script a poor man's version of it, where I use batch files to take the logs and copy them across the network and apply them to the second server at 5 minute intervals. Does anyone have any advice on whether this is technically achievable, or if there is a better way to do what I am trying to do? Note that I want to avoid having to pay for the full version of SQL Server and configure mirroring as I think it is an overkill for this application. I understand that other DB platforms may present suitable options (eg. a MySQL Cluster), but for the purposes of this discussion, let's assume we have to stick to SQL Server.

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• Ubuntu 12.04 froze during update, won't boot

  - by Cichol

  I've recently installed Ubuntu 12.04 on my laptop, and every time i tried to update it, it would freeze for a few seconds, and tell me that the updates could not be downloaded. After many, many tries I managed to get them downloaded, but then in the middle of installing them, it froze. Completely. No mouse movement, no blinking lights, no nothing. After a few hours of letting it sit there, I finally hit the power button to do a hard reset, and now when I select Ubuntu on the boot screen (Dual-boot with Windows 7), I get a blank purple screen, and then nothing. Another freeze. I've tried getting into the console, but no command I input has any visible effect. I have a ton of music stored on the partition it's in, so I'd really rather not have to reinstall. My specs, to the best of my knowledge: Clevo Corp model B7130 (Sager custom) CPU: Intel Core i5 @ 2.53gHz (4 CPUs) Graphics Card: Nvidia GeForce 425m 4096 MB RAM Drivers: Whatever comes with the download of 12.04. As a side-note, I installed Ubuntu via the Windows Installer program (wubi). Does that make a difference?

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• Checksum for Protecting Read-Only Documents

  - by Kim

  My father owns a small business and has to hand over several year's worth of financial documents to his insurance's auditor. He's asked me to go through and make sure everything is "read-only" so the data (the files) absolutely, positively cannot be modified or manipulated (he's a bit paranoid). We're talking about 20,000 documents (emails, spreadsheets, etc.). My first inclination was to place everything inside of one root folder ("mydadsdocs/") and then write a script that recursively traversed its directory subtree and set the file permissions to read-only. But then I got to thinking: that's a lot of work for me to do to satisfy an old man who is just being paranoid, and afterall, if someone really wanted to modify a read-only file, it would be pretty easy to change file permissions anyways, soo.... Is there like a checksum I could run on the root folder, something that was very quick and easy, and that would basically "stamp" the data in that folder so if someone did change it, my father would have someone of knowing/proving it? If so, how? If not, any other recommendations that are quick, cheap (free) and effective?

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• samba sync password with unix password on debian wheezy

  - by Oz123

  I installed samba on my server and I am trying to write a script to spare me the two steps to add user, e.g.: adduser username smbpasswd -a username My smb.conf states: # This boolean parameter controls whether Samba attempts to sync the Unix # password with the SMB password when the encrypted SMB password in the # passdb is changed. unix password sync = yes Further reading brought me to pdbedit man page which states: -a This option is used to add a user into the database. This com- mand needs a user name specified with the -u switch. When adding a new user, pdbedit will also ask for the password to be used. Example: pdbedit -a -u sorce new password: retype new password Note pdbedit does not call the unix password syncronisation script if unix password sync has been set. It only updates the data in the Samba user database. If you wish to add a user and synchronise the password that im- mediately, use smbpasswd’s -a option. So... now I decided to try adding a user with smbpasswd: 1st try, unix user still does not exist: root@raspberrypi:/home/pi# smbpasswd -a newuser New SMB password: Retype new SMB password: Failed to add entry for user newuser. 2nd try, unix user exists: root@raspberrypi:/home/pi# useradd mag root@raspberrypi:/home/pi# smbpasswd -a mag New SMB password: Retype new SMB password: Added user mag. # switch to user pi, and try to switch to mag root@raspberrypi:/home/pi# su pi pi@raspberrypi ~ $ su mag Password: su: Authentication failure So, now I am asking myself: how do I make samba passwords sync with unix passwords? where are samba passwords stored? Can someone help enlighten me?

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• Postfix Postscreen: how to use postscreen for smtp and smtps both

  - by petermolnar

  I'm trying to get postscreen work. I've followed the man page and it's already running correctly for smtp. But it I want to use it for smtps as well (adding the same line as smtp in master.cf but with smtps) i receive failure messages in syslog like: postfix/postscreen[8851]: fatal: btree:/var/lib/postfix/postscreen_cache: unable to get exclusive lock: Resource temporarily unavailable Some say that postscreen can only run once; that's ok. But can I use the same postscreen session for both smtp and smtps? If not, how to enable postscreen for smtps as well? Any help would be apprecieted! The parts of the configs: main.cf postscreen_access_list = permit_mynetworks, cidr:/etc/postfix/postscreen_access.cidr postscreen_dnsbl_threshold = 8 postscreen_dnsbl_sites = dnsbl.ahbl.org*3 dnsbl.njabl.org*3 dnsbl.sorbs.net*3 pbl.spamhaus.org*3 cbl.abuseat.org*3 bl.spamcannibal.org*3 nsbl.inps.de*3 spamrbl.imp.ch*3 postscreen_dnsbl_action = enforce postscreen_greet_action = enforce master.cf (full) smtpd pass - - n - - smtpd smtp inet n - n - 1 postscreen tlsproxy unix - - n - 0 tlsproxy dnsblog unix - - n - 0 dnsblog ### the problematic line ### smtps inet n - - - - smtpd pickup fifo n - - 60 1 pickup cleanup unix n - - - 0 cleanup qmgr fifo n - n 300 1 qmgr tlsmgr unix - - - 1000? 1 tlsmgr rewrite unix - - - - - trivial-rewrite bounce unix - - - - 0 bounce defer unix - - - - 0 bounce trace unix - - - - 0 bounce verify unix - - - - 1 verify flush unix n - - 1000? 0 flush proxymap unix - - n - - proxymap proxywrite unix - - n - 1 proxymap smtp unix - - - - - smtp relay unix - - - - - smtp showq unix n - - - - showq error unix - - - - - error retry unix - - - - - error discard unix - - - - - discard local unix - n n - - local virtual unix - n n - - virtual lmtp unix - - - - - lmtp anvil unix - - - - 1 anvil scache unix - - - - 1 scache dovecot unix - n n - - pipe flags=DRhu user=virtuser:virtuser argv=/usr/bin/spamc -e /usr/lib/dovecot/deliver -d ${recipient} -f {sender}

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• Find out the type of an automounted device

  - by Steve Bennett

  I'm working on a system (Ubuntu Precise) with a mount defined in /etc/fstab as follows: /dev/vdb /mnt auto defaults,nobootwait,comment=cloudconfig 0 2 Originally I just wanted to find out if it's NFS (due to potential MySQL locking issues). Judging from man mount, it's not: If no -t option is given, or if the auto type is specified, mount will try to guess the desired type. Mount uses the blkid library for guessing the filesystem type; if that does not turn up anything that looks familiar, mount will try to read the file /etc/filesystems, or, if that does not exist, /proc/filesystems. All of the filesystem types listed there will be tried, except for those that are labeled "nodev" (e.g., devpts, proc and nfs). If /etc/filesystems ends in a line with a single * only, mount will read /proc/filesystems afterwards. But, out of curiosity now, how can I find out more about what type of device it actually is? (For context, this is a VM running on OpenStack. The device is a 60Gb allocation mounted from somewhere - but I don't know how.)` EDIT Including answers here: $ mount /dev/vdb on /mnt type ext3 (rw,_netdev) $ df -T /dev/vdb ext3 61927420 2936068 55845624 5% /mnt

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• 554 5.7.1 <mail_addr>: Relay access denied centos postfix

  - by Relicset

  I have problem in send mail from postfix in centos I have following setup mail server postfix for sending mail but I am getting error. As in the link I tried following commands telnet localhost smtp Trying ::1... Connected to localhost. Escape character is '^]'. 220 mydomain.com ESMTP Postfix ehlo localhost 250-mydomain.com 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN mail from:<domain.com> 250 2.1.0 Ok rcpt to:<[email protected]> 554 5.7.1 <[email protected]>: Relay access denied Edit-1 In terminal this works echo TEST | mail -v -s "Test mail" [email protected] my postconf -n shows belog information alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix data_directory = /var/lib/postfix debug_peer_level = 2 home_mailbox = Maildir/ html_directory = no inet_interfaces = localhost inet_protocols = all mail_owner = postfix mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain mydomain = dummy.com myhostname = dummy.com mynetworks = all mynetworks_style = host myorigin = $mydomain newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES sample_directory = /usr/share/doc/postfix-2.6.6/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop unknown_local_recipient_reject_code = 550 What configuration I have to perform to send mails from my server.

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• What's the difference between Host and HostName in SSH Config?

  - by Bill Jobs

  The man page says this: Host Host Restricts the following declarations (up to the next Host keyword) to be only for those hosts that match one of the patterns given after the keyword. If more than one pattern is provided, they should be separated by whitespace. A single `*' as a pattern can be used to provide global defaults for all hosts. The host is the hostname argument given on the command line (i.e. the name is not converted to a canonicalized host name before matching). A pattern entry may be negated by prefixing it with an exclamation mark (`!'). If a negated entry is matched, then the Host entry is ignored, regardless of whether any other patterns on the line match. Negated matches are therefore useful to provide exceptions for wildcard matches. See PATTERNS for more information on patterns. HostName HostName Specifies the real host name to log into. This can be used to specify nicknames or abbreviations for hosts. If the hostname contains the character sequence `%h', then this will be replaced with the host name specified on the command line (this is useful for manipulating unqualified names). The default is the name given on the com- mand line. Numeric IP addresses are also permitted (both on the command line and in HostName specifications). For example, when I want to create an SSH Config for GitHub, what should Host and HostName be respectively?

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• Error in Bind9 named.conf file. Bind won't start.

  - by tj111

  I'm trying to setup a DNS server on an Ubuntu Server machine (10.04). I configured an entry in named.conf.local to test it, but when trying to restart bind9 I get the following error: * Starting domain name service... bind9 [fail] So I checked the output of syslog and this is what I get. May 20 18:11:13 empression-server1 named[4700]: starting BIND 9.7.0-P1 -u bind May 20 18:11:13 empression-server1 named[4700]: built with '--prefix=/usr' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--sysconfdir=/etc/bind' '--localstatedir=/var' '--enable-threads' '--enable-largefile' '--with-libtool' '--enable-shared' '--enable-static' '--with-openssl=/usr' '--with-gssapi=/usr' '--with-gnu-ld' '--with-dlz-postgres=no' '--with-dlz-mysql=no' '--with-dlz-bdb=yes' '--with-dlz-filesystem=yes' '--with-dlz-ldap=yes' '--with-dlz-stub=yes' '--with-geoip=/usr' '--enable-ipv6' 'CFLAGS=-fno-strict-aliasing -DDIG_SIGCHASE -O2' 'LDFLAGS=-Wl,-Bsymbolic-functions' 'CPPFLAGS=' May 20 18:11:13 empression-server1 named[4700]: adjusted limit on open files from 1024 to 1048576 May 20 18:11:13 empression-server1 named[4700]: found 4 CPUs, using 4 worker threads May 20 18:11:13 empression-server1 named[4700]: using up to 4096 sockets May 20 18:11:13 empression-server1 named[4700]: loading configuration from '/etc/bind/named.conf' May 20 18:11:13 empression-server1 named[4700]: /etc/bind/named.conf:10: missing ';' before 'include' May 20 18:11:13 empression-server1 named[4700]: loading configuration: failure May 20 18:11:13 empression-server1 named[4700]: exiting (due to fatal error) So it thinks I have an error in the default named.conf file, which is pretty ridiculous. I went through it and deleted a blank line just for the hell of it, but I can't see how it figures there's an error in there. Note that before this I did have an error in named.conf.local, but it showed up properly in syslog and I fixed it, so it is reporting the correct file. Here is the contents of named.conf: // This is the primary configuration file for the BIND DNS server named. // // Please read /usr/share/doc/bind9/README.Debian.gz for information on the // structure of BIND configuration files in Debian, *BEFORE* you customize // this configuration file. // // If you are just adding zones, please do that in /etc/bind/named.conf.local include "/etc/bind/named.conf.options"; include "/etc/bind/named.conf.local"; include "/etc/bind/named.conf.default-zones";

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• VoIP setup for one external PSTN line

  - by Jcl

  I'm completely new to VoIP and the likes, and I'm trying to find information about what could be the best setup for this. I need 4 (maybe more in the future, but maximum 5 or 6) wireless extensions, connected to 1 PSTN line, and maybe 2 in the future. I've been trying to gather information about the gear needed but everything I find seems too much over-the-top (and extremely expensive). The main problem is that the physical place we are on doesn't have possibilities of having a decent internet connection, so using a external VoIP "virtual PBX" is not an option. Thing is, even if small, phone is critical to this organization. I currently have an analog DECT/GAP PBX which does what I need, however the PBX is very bad and the call quality is horrible, and that's why I want to change it. The requirements would be: 4 wireless terminals (routing cable is not an option), all of them ringing on incoming PSTN calls. Ability to do internal calls (4 separate offices) and ability to pass calls between terminals. The 4 terminals should be able to access the external PSTN line without dialing any special codes. Very important: terminals should be able to issue commands on the PSTN line to the external operator in the form *nn*nnnnnnnn# . Don't know wether this could face to be a problem, but I've had problems with analog PBX which would take any * as a PBX command and wouldn't allow terminals to send it to the external lines. Not so important, but would be nice to have: call waiting music Could anyone recommend such a setup? I need to be able to do this on a EXTREMELY LIMITED budget (that is: I don't have a limit, but all should get as much to zero as possible). I have enough spare powerful computers and a 300mbps wireless network which works just fine, so that's not to include in the budget. Don't really know if this is the best place to ask, but it's the most StackExchange-related site I've found to this subject.

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