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  • Monit wont start/stop any processes

    - by Vaughan Magnusson
    Hi, I've got monit running on a linux vserver, installed in a custom location /home/user/bin/monit as that is the only suitable location according to the webhost providers. When I installed monit I used ./configure --prefix=/home/user Monit itself runs, and sends me emails of it's activity, and the control file syntax is correct. However, monit cannot seem to start or stop anything - or even run the simplest of scripts. eg. Using 'monit stop all', I try to run the following stop command stop = "/bin/bash /home/user/simple_script.sh" Which fails (and says so in the log). I cant figure out why this is failing, can anyone help with this?

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  • Automatically updating routing table on server

    - by bramp
    I have a LAN with three routers on it, one connected to the Internet, one VPN router connected to a few remote sites, and a final route connected to a private network (using BGP to get prefix advertisements). On the same LAN I have multiple Linux servers which needs access to the networks behind each router. I have achieved this by configuring static routes on the server, pointing the different network prefixes to the correct router. This has worked well, but every time we connect to a new remote VPN, we have to change all the servers to be aware that the network is now accessible via the VPN, and not via the default Internet route. What I want is a way to automatically update the routes on all of the servers, when the route is added to a routers. Now, I could install Quagga or something similar on all the servers to receive router advertisements, but that seems like overkill. So my question is what is the easiest/simpliest way to update the routing tables on the server automatically, and what protocol is best suited for this purpose. thanks

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  • FTP issue - VSFTPd and connecting to from FileZilla

    - by B Tyndall
    I'm trying to connect to a CentOS Linux box that I have hosted on EC2 and I think I have everything configured correctly but when I try to connect I get this series of messages Status: Connection established, waiting for welcome message... Response: 220 (vsFTPd 2.0.5) Command: USER tyndall Response: 331 Please specify the password. Command: PASS ********* Response: 230 Login successful. Status: Connected Status: Retrieving directory listing... Command: PWD Response: 257 "/home/tyndall" Command: TYPE I Response: 200 Switching to Binary mode. Command: PASV Error: Connection timed out Error: Failed to retrieve directory listing Not sure where to start troubleshooting this issue. Any ideas? Do I need to change any permissions? I would think this ID has the ability to see my own home directory. I am able to push/pull files from the command line version of FTP client working on Windows.

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  • Ways for managing the installation and configuration of various software applications and settings i

    - by EmpireJones
    What are some ways for managing the installation and configuration of various software applications and settings in group of linux development and server computers? Is a set of basic scripts a good means of attack? I was thinking about just having a ton of scripts, such as: setup_dev_env [install|uninstall|reinstall] setup_nfs [...] setup_nfs_share [...] setup_http [...] setup_memcache_node [...] Is there any better method? It would be nice to be able to "upgrade" an installation script too, for example, to change common development settings.

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  • WINEHQ - wine_gecko won't init - HTML Rendering disabled

    - by Nick
    Hello Super Users, I'm currently trying to get a windows compiled program to work through Wine to run on Linux and MacOSX. When I run the program through wine, it prompts me to install Gecko which I do. Later on in the program, it attempts to use MSHTML to render HTML but I get these error messages on my console instead. err:mshtml:init_xpcom NS_InitXPCOM2 failed: 80004005 err:mshtml:HTMLDocument_Create Failed to init Gecko, returning CLASS_E_CLASSNOTAVAILABLE fixme:ole:CoCreateInstance no instance created for interface {00000000-0000-0000-c000-000000000046} of class {25336920-03f9-11cf-8fd0-00aa00686f13}, hres is 0x80040111 I'm using Wine 1.1.34 and a similar bug was supposedly fixed in 1.1.33 http://bugs.winehq.org/show_bug.cgi?id=12578 I've been at this all afternoon, is there anything I'm missing? Thanks, Nick

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  • Can I create an SSH user which can access only certain directory?

    - by RiMMER
    I have a Virtual Private Server which I can connect to using SSH with my root account, being able to execute any linux command and access all the disk area, obviously. I would like to create another user account, which would be able to access this server using SSH too, but only to a certain directory, for example /var/www/example.com/ For example, imagine this user has a HUGE error.log file (500 MB) located in /var/www/example.com/logs/error.log When accessing this file using FTP, this user needs to download 500 MB to view the last lines of the log, but I'd like him to be able to execute something like this: tail error.log Therefore I need him to be able to access the server using SSH, but I don't want to grant him access to all server areas. How can I do this?

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  • Figure out what non-symlink path would be?

    - by David Mackintosh
    On Linux, if I've cd'd around and am now in a directory, is there a way to figure out what the real path to that directory is if I had not used a symbolic link to get there? Consider: $ pwd /home/dave/tmp $ mkdir -p 1/2/3/4/5 $ ln -s 1/2/3/4/5 5 $ cd 5 $ pwd /home/dave/tmp/5 Or: $ pwd /home/dave/tmp $ mkdir -p 1/2/3/4/5 $ ln -s 1/2/3/4 4 $ cd 4/5 $ pwd /home/dave/tmp/4/5 Is there any way to figure out that /home/dave/tmp/5 is really /home/dave/1/2/3/4/5 ?

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  • Keyboard layout for mathematical/Greek symbols

    - by David
    I've been wondering about this for a long time but never thought to ask: I do a lot of scientific work so there are many times it would be really handy to be able to type mathematical symbols or Greek letters which, for the most part, aren't part of the ASCII character set. Like "8 µ ? s t ? ? … v ? = = ±" and so on. Is there a keyboard layout (for Linux) that maps simple key combinations to these kinds of characters? (Assuming all the encoding and font issues are worked out properly) I know I could create one myself but it'd be a lot easier if someone's already done the work, or at least if there's a partial solution I could modify.

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  • How to increase max FD limit for a daemon process running under a headless user?

    - by Ameliorator
    To increase the FD limit for a daemon process running under a headless user on a Ubuntu Linux machine we did following changes in /etc/security/limits.conf soft nofile 10000 hard nofile 10000 We also added session required pam_limits.so in /etc/pam.d/login. The changes got reflected for all the users who logged out and logged in again. Whatever new processes are starting under those users are getting new FD limits. But for the daemon which is running under a headless user the changes are not getting reflected. what is the way by which the changes can be reflected for the daemon which is running under headless user ?

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  • What is the difference between /sbin/nologin and /bin/false?

    - by Michael Hampton
    I have often heard it recommended that a user account should be disabled by setting its shell to /bin/false. But, on my existing Linux systems, I see that a great number of existing accounts (all of them service accounts) have a shell of /sbin/nologin instead. I see from the man page that /sbin/nologin prints a message to the user saying the account is disabled, and then exits. Presumably /bin/false would not print anything. I also see that /sbin/nologin is listed in /etc/shells, while /bin/false is not. The man page says that FTP will disable access for users with a shell not listed in /etc/shells and implies that other programs may do the same. Does that mean that somebody could FTP in with an account that has /sbin/nologin as its shell? What is the difference here? Which one of these should I use to disable a user account, and in what circumstances? What other effects does a listing in /etc/shells have?

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  • Dell Dimension running Fedora12 does a "Sleeping Beauty" and I am not am not a "handsome prince"!

    - by Jim Dobbs
    Dell Dimension 2350 with a Pentium IV processor and integrated video and network chips running Fedora12 does a "Sleeping Beauty" and I, apparently, am not am not a "handsome prince"! The system puts video and network to sleep and it will not wakeup. I have heard of this problem on laptops, but this is a tower. Any ideas or help is appreciated. I tried to ping the network card from another system and ping fails. The logs indicate that the system continues to be active. Pressing keyboard short-cut keys makes the disk light blink but neither the video or network card comes alive. Failing all else, are there any Linux commands that I could schedule in cron to pulse video and network adapters hourly that will keep them awake? Or, should I wait on Fedora13? Before this machine, I built a Dimension 2400 with Pentium IV and it had the same problem. Fedora9 on the same hardware is fine.

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  • Dummy HTTP server for debugging

    - by Andrea
    This is more or less the inverse of my previous question. I need to debug some HTTP requests that I am making. Since these requests arise from the use of some external libraries, sometimes I am not sure of what is the actual data I am sending. Is there some dummy server (for Linux) that accepts HTTP requests and just prints them somewhere so that I can inspect them? I would like to be able to see in plain text the full request, like POST /foo HTTP/1.1 Host: www.example.com Accept: text/xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 Accept-Language: en-gb,en;q=0.5 Content-Type: text/plain Content-Length: 11 Hello world

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  • How do I unmount a tmpfs that is missing from /etc/mtab?

    - by vrinek
    I have the following line in /etc/fstab: none /home/hydra/tmp tmpfs user,noauto,size=1000M,uid=1001,gid=1001 0 0 I can do mount ~/tmp as user hydra and it gets mounted ok. The only problem is that even thought it gets added to /proc/mounts, it does not get added to /etc/mtab. When I try a umount ~/tmp (again as hydra) it complains: umount: /home/hydra/tmp is not mounted (according to mtab) And when I try -f or -n, it complains that I am not root. Some more info on the system that manifests this problem: On sudo umount /home/hydra/tmp, the fs gets unmounted (I think I needed to used -f too) Debian version is testing mount --version - mount from util-linux 2.19.1 (with libblkid and selinux support) ls -l /etc/mtab - -rw-r--r-- 1 root root 921 Nov 14 09:08 /etc/mtab cat /proc/mounts | grep rootfs - rootfs / rootfs rw 0 0 /home, /home/hydra nor /home/hydra/tmp are symbolic links

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  • Kickstart virtual console: No 'Shell prompt' at Alt-F2

    - by Stefan Lasiewski
    I am installing Scientific Linux 6.1 via kickstart, and I am trying to debug a problem. According to Tips and tricks for anaconda and kickstart, I should have several virtual consoles available: What the different terminals display Alt-F1 The installation dialog when using text or cmdline Alt-F2 A shell prompt Alt-F3 The install log displaying messages from install program Alt-F4 The system log displaying messages from kernel, etc. Alt-F5 All other messages Alt-F7 The installation dialog when using the graphical installer The Virtual Consoles Alt-F1, F3, F4 & F5 all work and show various logging information. However, the Virtual Console at Alt-F2 does not do anything. I could really use access to the shell prompt (Alt-F2), however there is no Shell prompt available at the second virtual console (Alt-F2). All I have is a blinking '_'. Can I forge Alt-F2 to show me a shell prompt?

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  • SSH broken, segfault error 4

    - by trampi
    i cannot connect to my server via ssh, it throws me a "server unexpectedly closed connection" after entering the password. in var/log/messages the only noteable message is: Apr 14 17:41:23 s15410270 kernel: sshd[3602]: segfault at c0 ip 7f0801acbdb0 sp 7fff0adff860 error 4 in libc-2.8.so[7f0801a87000+14f000] Apr 14 17:41:29 s15410270 kernel: sshd[3606]: segfault at c0 ip 7f75f9463db0 sp 7fff027971f0 error 4 in libc-2.8.so[7f75f941f000+14f000] This message appears after a log in attempt via ssh or via sftp Its a SuSE Linux server. I'm looking for help where to start to search for the error, i can still act as root via a serial console. edit: "server unexpectedly closed connection" only appears if i enter the correct password!

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  • How to share files between cPanel accounts?

    - by Darren
    I am setting up a multi-site/multi-store Magento installation, and I want each site to have its own cPanel account so I can setup the SSL and dedicated IP properly. I have tried to create a linux group called 'magento' and changed the files I need to share to that group (even added the users to that group), however when I try to access files through my scripts on those accounts it doesn't acknowledge the files exist. I first made a soft symbolic link which didn't work and then including them to their real location but it didn't work. Am I missing a step in allowing which users can access which files? I added the users to the magento group and like I said changed the group of the files I need to share to them but it's still not working. Thanks, Darren

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  • Is there a way to determine the original size or file count of a 7-zip archive?

    - by Zac B
    I know that when I compress an archive with the 7za utility, it gives me stats like the number of files processed and the amount of bytes processed (the original size of the data). Is it possible, using the commandline (on linux) or some programming language, to determine: the original size of an archive, before it was compressed? the number of files/directories contained within an archive? The answer might be "no, just decompress the whole archive and do counting/sizing then", but it would be useful to know if there was a faster/less space-greedy way.

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  • Redirect one input from one terminal to another

    - by Niki Yoshiuchi
    I have sshed into a linux box and I'm using dvtm and bash (although I have also tried this with Gnu screen and bash). I have two terminals, current /dev/pts/29 and /dev/pts/130. I want to redirect the input from one to the other. From what I understand, in /dev/pts/130 I can type: cat </dev/pts/29 And then when I type in /dev/pts/29 the characters I type should show up in /dev/pts/130. However what ends up happening is that every other character I type gets redirected. For example, if I type "hello" I get this: /dev/pts/29 | /dev/pts/130 $ | $ cat </dev/pts/29 $ el | hlo This is really frustrating as I need to do this in order to redirect the io of a process running in gdb (I've tried both run /dev/pts/# and set inferior-tty /dev/pts/# and both resulted in the aforementioned behavior). Am I doing something wrong, or is this a bug in bash/screen/dvtm?

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  • How to enter a bash script at the command line, but not process the script until the entire script h

    - by MHGL
    I am performing some interactive testing using HP's QuickTest Professional and Linux. I am connecting via SSH and feeding the BASH script lines directly into the command line. The problem I'm having is that the script executes as it is entered. I'm attempting to find a way that I can feed the script to the command line, but save execution until the entire script is complete. Anyone have any experience around doing this? I'll admit, it isn't the ideal way to perform this, but it's what I'm faced with at the moment. Any other suggestions are welcome. Thanks!

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  • How do I install php-gd?

    - by user42577
    I've done phpinfo() to see if it was installed but I see no mention of the gd libraries anywhere. I ran this command (rpm -qa | grep php) and this is what I see: php-gd-4.3.9-3.18.1.swsoft php-mysql-4.3.9-3.18.1.swsoft php-pgsql-4.3.9-3.18.1.swsoft php-4.3.9-3.18.1.swsoft php-domxml-4.3.9-3.18.1.swsoft php-imap-4.3.9-3.18.1.swsoft php-mbstring-4.3.9-3.18.1.swsoft php-ncurses-4.3.9-3.18.1.swsoft php-pear-4.3.9-3.18.1.swsoft php-snmp-4.3.9-3.18.1.swsoft php-devel-4.3.9-3.18.1.swsoft php-ldap-4.3.9-3.18.1.swsoft php-odbc-4.3.9-3.18.1.swsoft php-xmlrpc-4.3.9-3.18.1.swsoft My server is a linux box with php5 installed. I also tried to run yum install php5-gd to no avail.What else should I do or check to get it installed?

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  • Sending UDP/514 data magically appears in syslog without rsyslog running

    - by ale
    I’m using a programming language without a library to log to rsyslog over UDP. I thought I was going to need to write a library but I discovered something weird. If I send data on UDP/514 with the port open on the server then the data appears in the server’s syslog. rsyslogd isn’t running so syslog isn’t doing this. Data doesn’t get formatted into a syslog message so rsyslogd really isn’t doing this (only raw text enters syslog). Linux must see the data coming in on this port and know that it should go into /var/log/messages? If I do the same on another port (e.g. UDP/515) then nothing appears in the log! What is doing this? Some CentOS feature? The kernel?

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  • Watch Flash video but block out part of it

    - by Ken
    I'm learning a foreign language. There are several online sites that have Flash video in the language I'm learning (e.g., Hulu), which is great. Unfortunately, they have English subtitles, which is (depending on who you ask) somewhere between "annoying" and "actively harmful to my learning". When I'm watching them in a window, I can just move them near the bottom of the screen, or put another window over them. That's awkward, but it kind of works. But I'd like to watch them full-screen, on my TV set. Full-screen Flash doesn't let me put any window on top of it. Is there a way to watch an online Flash video but block out part of it? I'll probably be using my Mac for this, but maybe Linux -- solutions for either one welcome.

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  • Home folder only SFTP connection has limited access

    - by Tomasz Durka
    I have configured sftp access for user using this guide: Linux shell to restrict sftp users to their home directories? I have problem though. I have taken all steps. I have chown'ed root:user the home folder and I set permissions to 755. I can login normally using SFTP, however I can NOT transfer files, can NOT mkdir directories. If I change permissions to 777 it's ok do edit everything. However this is the thing I don't want. Additionally after exiting sftp and reconnecting then connection is reset by peer (due to setting 777). Anyone had similar problem? What I am doing wrong?

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  • How can I use my laptop's monitor as my PC's ONLY monitor? [closed]

    - by Randell
    Possible Duplicate: Can I use my laptop as a second monitor for my desk computer? My PC's monitor just died and I'm not looking at buying a new monitor anytime soon. So I'm thinking of using my laptop's monitor for it. Both machines are running on Fedora linux. Edit: Both machines are connected to the same wireless network. PC needs to log in before it can connect to the network if I'm not mistaken. Update: This is different from Can I use my laptop as a second monitor for my desk computer? , because that question is asking how to use the laptop screen as the secondary display, not as the only display.

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  • clam anti-virus is slowing down my server performance significantly

    - by Scarface
    Hey guys, I just installed clam av http://sourceforge.net/projects/php-clamav/ for scanning file uploads on my linux VPN running php. The problem is that for some reason just initiating the extension in the php ini file slows down my entire network. Regular requests such as changing pages that should take less than 1 second take 5. Has anyone ever experienced this before or have a good virus scanning alternative for scanning file uploads? extension=clamav.so [clamav] clamav.dbpath="/usr/share/clamav" clamav.keeptmp=20 clamav.maxreclevel=16 clamav.maxfiles=10000 clamav.maxfilesize=26214400 clamav.maxscansize=104857600 clamav.keeptmp=0

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