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• "No space left on device" with FreeBSD

  - by why

  When I login with root, and run "mkdir .ssh", the system says "No space left on device". But if I login with other user, it goes well. [/root]df -h Filesystem Size Used Avail Capacity Mounted on /dev/da0s1a 496M 411M 45M 90% / devfs 1.0K 1.0K 0B 100% /dev /dev/da0s1e 496M 12K 456M 0% /tmp /dev/da0s1f 57G 878M 51G 2% /usr /dev/da0s1d 4.3G 215M 3.8G 5% /var [/root]mkdir .ssh /: create/symlink failed, no inodes free mkdir: .ssh: No space left on device

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• Is there a way to rsync in batches?

  - by Chris

  I have a huge chunk of data (11G) in a subversion repository that I'm using rsync to migrate to Alfresco, which lucene indexes new files as they hit the file system. I'm using a dav mount as a proxy to allow me to rsync. The issue I'm having is the indexing post-rsync is quite an expensive operation for such a huge chunk of data, so I was wondering whether there's a way I could logically separate the rsync into identically-sized batches (say 500MB each) so I could schedule them in cron. At the moment, I'm traversing the top level folders and taking the smallest ones across first, but once I'm done with those, the much larger sub-directories are going to be quite troublesome. Please let me know if you need any further info. Thanks in advance.

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• Not able to send mail from solaris server

  - by Vetrichelvan

  I'm not able to send mails from my server using MAILX command,have found that some of them,sendmail.cf has no entry for DS.Is there any other things which can disable mail functionality in server?

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• save as pdf in linux

  - by Neilvert Noval

  I have seen how simple it is for Mac OS to generate pdf from a document without additional software to install. But I am looking for this functionality in Linux. One scenario, for example, if I have myDocument.txt that contain an article, how can I convert this into pdf? My next question is, assuming that myDocument.txt is a 3-paged document, will it generate a 3-page continuous pdf and not just 3 separate pdfs? Any tools for linux that does this? (GUI is fine, but commandline is preferable)

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• printing in linux

  - by Neilvert Noval

  Hello all. I've been a linux user for quite some time. But haven't do printing until now. I just wanna ask how to do printing in linux? I have researched a bit on it. I found some $> echo "print me" > /dev/lp0, but unfortunately, I have no lp0 in my /dev. I don't know if this is the right thing to do. Nevertheless, please tell me of ways on how I can print from my linux box. Here are some details: OS: debian linux 5.0.4 printer: disclosed until it is necessary connection: usb connection So do i need to add a printer first? From the printer manual that I read, this printer model has no linux driver.

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• Gitolite SSH URL Format

  - by KPthunder

  So I got gitolite set up. Simple. But there is one issue I am having. The SSH urls follow the format of git@host:repo. I'm used to Bitbucket / Github where the urls follow the format of git@host:user/repo. Is there a way to get the latter format using gitolite? Another question. I have my ~/.ssh/config file set up with the following entry: Host <host> User <user> IdentityFile <path/to/public/key> I don't have any configuration specifying git as a user, and yet I am able to clone git@host:repo without problem. Obviously, my ssh client is using my public key to access the server which is why gitolite is letting me clone the repo, but how does my ssh client know to use my public key which is only configured for the <user> user and not the git user?

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• Is it better to check if file exists before deleting it

  - by Kevin Fegan

  Sometimes when I want to delete a file (from within a script), I will just delete it rather than checking if it exists first. So I do this: $ rm "temp.txt" 2>/dev/null Instead of this: [ -f "temp.txt" ] && rm "temp.txt" I just feel it's a waste of time to go and check if the file exists and return an exit code. So, perhaps it's quicker to do it the first way, especially if most of the time, the file is likely to be present. Are there any other advantages (or downsides) to do it one way or the other? Am I wrong to think it will ever be quicker?

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• Given a html file, how to find the first 4 numbers?

  - by user38053

  Given a html file, how to find the first 4 numbers?

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• Automatically mount partition when needed

  - by David Parunakian

  Hello, Can anyone suggest a method of mounting a partition (e.g. an NFS share) when a user changes into the directory it is set to be mounted to, and not on the system startup? So far I've been unable to propose such a method, aside from editing BASH built-in cd implementation and forcing an fstab/mtab check before the working directory is actually changed.

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• Homedir inside homedir restricted access

  - by blid

  On my VPS i've installed debian, apache+php. I have 2 users: foo and bar. Apache is configured to execute php files from /home/foo/htdocs. I created dir: /home/foo/htdocs/bar/ and made it home dir for user bar. Hover, I need to make a restriction: bar can't read, write or executre any files outside his own dir, but Apache has to be able execute all php files from /htdocs. I tried to chown the bar dir only for user bar, also experimented a lot with chmod but without a result so far. If there's any better way to satisfy my needs don't hesitate to write about it. Thanks in advance

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• how to correctly download tomcat 6 on centos 5.5

  - by user582862

  hi guys, i am a big confused about how to install tomcat 6 on centos 5.5 final. this is what i am trying to do: # cd /etc/yum.repos.d/ # wget http://jpackage.org/jpackage50.repo # yum install tomcat6 tomcat6-webapps tomcat6-admin-webapps but when i type the widget command, this is what i get: Resolving www.jpackage.org... failed: Temporary failure in name resolution. wget: unable to resolve host address `www.jpackage.org' could anyone kindly show me the right way please. really in trouble at the moment with this. thanks in advance.

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• Fastest reliable way to open the terminal?

  - by meder

  I actually had my SUPER_L ( left windows key ) binded to gnome-terminal, but for whatever reason ever since upgrading to 9.04 Ubuntu from 8.10 Intrepid it seemed to break the key binding. It was very handy because I could throw open the terminal with one key ( sorry but alt-f2 and typing gnome-terminal isn't practical for me ). Or perhaps it reset all the keybindings? I remember using xev and some gui type interface that was akin to Win32 registry editor. Anyway, I'm curious as to what you guys use to open the terminal.

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• Can't access Terminal anymore, only shows a cursor

  - by user138304

  I run OS X. Following these directions (Installing MySQL on Mac OS X) I added a file to /usr and the contents were PATH=/usr/local/mysql/bin:$PATH Actually I was trying to get the mysql command to work now I cannot access terminal. All I get is a cursor but no command line. I also cannot find the file I created in the Finder. I used command shift G to find the folder /usr and the file is not there. Edit: I Solved the problem by restarting my computer. I am really not sure what the problem was. I got the idea because Could not open a new pseudo-tty. appeared in my terminal after following slhck directions to remove my .profile file. I then searched google and found this; http://blogs.oreilly.com/digitalmedia/2008/03/fixing-terminal-tty-errors.html. Thanks

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• Can't read directory owned by my group

  - by Jonathan

  I moved the postgres data directory to a separate partition and it works great. The directory is owned by postgres user and postgres group. d-wx------ 11 postgres postgres 4.0K 2010-06-11 08:28 data/ I added myself to the group > sudo addgroup me postgres > groups me me : me adm dialout cdrom plugdev lpadmin admin sambashare postgres And gave the group read and execute permissions to everything in the directory. sudo chmod -R g+rx ./data d-wxr-x--- 11 postgres postgres 4.0K 2010-06-11 08:28 data/ But I still can not CD or LS the directory. > ls data ls: cannot open directory data: Permission denied What beginner mistake am I making?

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• /etc/hosts: What is loghost? (fresh install of Solaris 10 update 9)

  - by cjavapro

  # # Internet host table # ::1 localhost 127.0.0.1 localhost XX.XX.XX.XX myserver loghost What is the purpose of loghost? If it was not for having loghost in there, all the /etc/hosts files on all the servers in this particular network could be identical. Edit: I looked at /etc/syslog.conf #ident "@(#)syslog.conf 1.5 98/12/14 SMI" /* SunOS 5.0 */ # # Copyright (c) 1991-1998 by Sun Microsystems, Inc. # All rights reserved. # # syslog configuration file. # # This file is processed by m4 so be careful to quote (`') names # that match m4 reserved words. Also, within ifdef's, arguments # containing commas must be quoted. # *.err;kern.notice;auth.notice /dev/sysmsg *.err;kern.debug;daemon.notice;mail.crit /var/adm/messages *.alert;kern.err;daemon.err operator *.alert root *.emerg * # if a non-loghost machine chooses to have authentication messages # sent to the loghost machine, un-comment out the following line: #auth.notice ifdef(`LOGHOST', /var/log/authlog, @loghost) mail.debug ifdef(`LOGHOST', /var/log/syslog, @loghost) # # non-loghost machines will use the following lines to cause "user" # log messages to be logged locally. # ifdef(`LOGHOST', , user.err /dev/sysmsg user.err /var/adm/messages user.alert `root, operator' user.emerg * ) Very interesting. when shutting down,, alerts go to all users probably through *.emerg * Looking at ifdef, it seems that the first parameter checks to see if current machine is a loghost, second parameter is what to do if it is and third parameter is what to do if it is not. Edit: If you want to test a logging rule you can use svcadm restart system-log to restart the logging service and then logger -p notice "test" to send a test log message where notice can be replaced with any type such as user.err, auth.notice, etc.

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• How to change the mail domain server so it's not displaying IP? Changing [email protected] to [email protected]

  - by Pavel

  Hi guys. I'm kinda a noob as a server admin so please bear with me. I've installed postfix mail server and everything is working fine but the 'from' box is displaying [email protected]. I want to set it up so it displays domainname.com instead of IP. I just hope you know what I mean. My main.cf in postfix folder looks like this: # See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name will cause the first # line of that file to be used as the name. The Debian default # is /etc/mailname. myorigin = /etc/mailname smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu) biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = no # TLS parameters smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key smtpd_use_tls=yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for # information on enabling SSL in the smtp client. myhostname = mail.thevinylfactory alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases myorigin = /etc/mailname mydestination = mail.thevinylfactory.com, thevinylfactory, localhost.localdomain, localhost relayhost = mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 mailbox_size_limit = 0 recipient_delimiter = + inet_interfaces = all Can anyone help me with this one? If you need any more details please let me know. Thanks in advance!

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• Core 2 Duo Processor E8400 with LGA 755 socket?

  - by Someone

  The motherboard on my PC (Dell XPS 410) has socket LGA 755 and according to the box on this processor I have, says it requires a motherboard with socket LGA 775. Will this processor work on the 755 motherboard? Edit: After reading further result online, I think I may have been fed some mis-information. According to this thread the XPS comes with socket LGA 755 but on other sites it says that it comes with LGA 775...

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• Bash: verify that process has stopped

  - by pfac

  I'm working on script meant to start/stop a set of services. For stopping, it has to terminate many processes which take a while and might hang. The script needs to verify that the process has indeed terminated, and send an email if such does not happen after a given period. This is what I have: pkill -f "stuff" for i in {1..30}; do VERIFICATIONS=$i if verification_command then echo "It's gone" break fi sleep 2 done if [ $VERIFICATIONS -ge 30 ]; then echo "failed to terminate" # send mail fi Is there a better way to do this?

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• /dev/shm (shared memory) on linux

  - by Kirzilla

  Hello, Let's imagine that we have 8Gb of RAM on server. I'm mounting /dev/shm with 4Gb on board. mount -o remount,size=4G /dev/shm Will this memory be strictly reserved for shared memory or if /dev/shm is empty this memory could be used by regular applications (web server, php etc.)? PS:Sorry for my English. I'm asking it because I've just checked df -h and found tmpfs 6.0G 0 6.0G 0% /dev/shm on 8Gb RAM sever. I don't know who made this setup, but it seems to me awful. Thank you!

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• How to execute a command on multiple hosts using IPv6 only?

  - by math

  First of all there is pdsh which is essentially a parallel distributed shell which may execute commands on a list of given hosts. However, I find myself in an IPv6 only problem setting. It seems that pdsh is not able to use IPv6, as I am getting error messages: pdsh -w ^hostnames my_command pdsh@myhost: gethostbyname("foobar") failed I also tried to use IPv6 addresses only, which also didn't work. So how do you run a single shell script for administrative purpose (no SGE stuff, or similar) on a bunch of hosts that is IPv6 reachable only?

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• How to execute home directory shell script file in php

  - by vvr

  How to execute /home/scripts/test.sh file in php Previously i have placed 'test.sh' file in the /usr/bin and calling in my php file like this exec('test.sh ' . escapeshellarg($testString)); But for security reasons i moved .sh file to /home/scripts directory and in my php i am calling like this exec('/home/scripts/test.sh ' . escapeshellarg($testString)); But it is not working now. Please suggest me how to achieve this.

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• Cygwin file and directory user and group

  - by dvanaria

  I use Cygwin as my main development environment on both my home and work computers. In order to share files between the two computers, I use Dropbox, which is installed in the following folder on both computers: c:\cygwin\home\dvanaria\dropbox Everything works great, except for one thing. When I'm working on my home computer and do an ls -l on any directory, all the files show up as owned by dvanaria of group Users. But when I work from my work computer, an ls -l shows all files as being owned by Administrators and of group Domain Users. I know Cygwin uses some kind of mapping between Windows users and permissions to the /etc/passwd file. But to be honest I have no idea how this file works or how it maps to Windows under Cygwin. Could anyone help figure this out? The main problem is that I can't edit any files when using my work computer, only read them.

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• Cisco NAC: help with enabling FTP or moving update files

  - by kyoung

  Hi, So this is a LINUX question, and a Cisco NAC question. I'm trying to update our server from 4.1 to 4.7, and i need to move some tarball files to the NAC. the NAC Appliance runs some strange stripped down version of Fedora Core 4 copying the upgrade: The instructions say to FTP the file to the NAC appliance, however whenever i use WinSCP with root credentials, i get a notice informing me the connection was actively refused. I can't for the life of me find any .conf files that sound like winners, so I don't know how to change the settings, however the ftp command does seem to work. what exactly should I do here?

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• How to secure svn+ssh checkout users?

  - by vvanscherpenseel

  All our SVN repositories are hosted on a dedicated machine on which all the developers have access. Every now and then we need to checkout a repository on a machine we don't own or operate ourselves. Currently we all use our own system (SSH) account for this, but instead I would like to use some generic 'checkoutsvn' user that can be used for this. This user is only used for checking out from a repository, but should not be allowed to log in to the system (no shell access). I tried to do this by setting the default shell of that account to /sbin/nologin but then SVN fails, as apparently svn+ssh requires shell access. How do you do this? Is there a good solution for this?

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• Replacement for NIS/YP

  - by mdpc

  The company that I am working for is embarking on replacing the current locally developed NIS/YP structure with LDAP. We already have AD in house for the Windows stuff and would like to consider using an AD system. The AD people are quite restrictive and would not support extensive modifications. We have needs to have the replacement include the support the full capabilities of the NIS/YP suite include netgroups, login restrictions to specific servers for specific users or groups of users, consistent passwords between the *nix and Windows environment,etc. Our environment is a mixture of Linux (suse, RH, Debian), Sun, IBM, HP and MPRAS as well as a NETAPP. So whatever we use must be totally inclusive to all environment. We have looked at Likewise, but our management wants other alternatives to compare with. What other things should I be looking at and what is you assessment of the alternative? Thanks

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