Frequently Asked Questions About Linux / UNIX » UNIX http://www.cyberciti.biz/faq Every answer asks a more beautiful question. Fri, 03 Feb 2012 22:38:32 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Linux / Unix Shell: Set Default Printerhttp://www.cyberciti.biz/faq/howto-set-default-printer-bash-ksh-csh-unix-linux-shell/ http://www.cyberciti.biz/faq/howto-set-default-printer-bash-ksh-csh-unix-linux-shell/#comments Sun, 29 Jan 2012 22:42:02 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=11483 How do I set default printer in my Bash shell under CentOS Linux or FreeBSD unix desktop operating systems?]]> http://www.cyberciti.biz/faq/howto-set-default-printer-bash-ksh-csh-unix-linux-shell/feed/ 0 Linux / Unix: SysVinit Services Restart vs Reload vs Condrestarthttp://www.cyberciti.biz/faq/linux-unix-sysvinit-services-restart-vs-reload-vs-condrestart/ http://www.cyberciti.biz/faq/linux-unix-sysvinit-services-restart-vs-reload-vs-condrestart/#comments Thu, 05 Jan 2012 21:24:25 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=11349 Can you tell me differences between the following sysvinit /sbin/service command:
service httpd restart service httpd condrestart service httpd reload
]]> http://www.cyberciti.biz/faq/linux-unix-sysvinit-services-restart-vs-reload-vs-condrestart/feed/ 0 Linux / UNIX: HowTo Empty Directoryhttp://www.cyberciti.biz/faq/howto-empty-linux-unix-directory-delete-all-files/ http://www.cyberciti.biz/faq/howto-empty-linux-unix-directory-delete-all-files/#comments Tue, 20 Sep 2011 21:14:33 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=11109 How do I empty a directory (delete all files) under Linux / Unix without deleting directory itself?]]> http://www.cyberciti.biz/faq/howto-empty-linux-unix-directory-delete-all-files/feed/ 7 Linux / Unix: Tarball Delete ( remove ) Filehttp://www.cyberciti.biz/faq/unix-linux-bsd-applesox-delete-remove-files-from-tar/ http://www.cyberciti.biz/faq/unix-linux-bsd-applesox-delete-remove-files-from-tar/#comments Tue, 20 Sep 2011 20:46:20 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=11098 How do I delete OR remove a single file from within a tar ball under Unix / Linux like operating systems?]]> http://www.cyberciti.biz/faq/unix-linux-bsd-applesox-delete-remove-files-from-tar/feed/ 2 Linux: NFS4 mount Error reason given by server: No such file or directoryhttp://www.cyberciti.biz/faq/mount-nfs4-reason-given-by-server-no-such-file-directory/ http://www.cyberciti.biz/faq/mount-nfs4-reason-given-by-server-no-such-file-directory/#comments Tue, 06 Sep 2011 23:41:49 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=11006 I recently installed NFS server v4 on my HP Linux server. However, I'm not able to mount it from Linux nfs4 client using the following command:
mount.nfs4 server2:/data /data
I'm getting the following error:
mount.nfs4: mounting server2:/data failed, reason given by server: No such file or directory
How do I fix this problem?]]> http://www.cyberciti.biz/faq/mount-nfs4-reason-given-by-server-no-such-file-directory/feed/ 0 Mac OS X: Move the Dock and Menu Bar To External Displayhttp://www.cyberciti.biz/faq/apple-osx-move-bottom-dock-top-menu-bar-second-monitor/ http://www.cyberciti.biz/faq/apple-osx-move-bottom-dock-top-menu-bar-second-monitor/#comments Fri, 26 Aug 2011 17:03:16 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10979 I'm using an external display with a MacBook Pro. I do not want to use the external monitor as a mirrored display. I need to move the dock and the menu bar to external monitor. How do I setup the external monitor as main display?]]> http://www.cyberciti.biz/faq/apple-osx-move-bottom-dock-top-menu-bar-second-monitor/feed/ 2 TCSH / CSH / C Shell Check Whether a Directory is Empty or Nothttp://www.cyberciti.biz/faq/unix-linux-cshell-check-whether-directory-empty-not/ http://www.cyberciti.biz/faq/unix-linux-cshell-check-whether-directory-empty-not/#comments Tue, 05 Jul 2011 09:34:45 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10800 How do I check whether a directory is empty or not under Linux / UNIX using a TCSH / C shell script?]]> http://www.cyberciti.biz/faq/unix-linux-cshell-check-whether-directory-empty-not/feed/ 0 Sendmail: Clear / Delete / Flush Mail Queuehttp://www.cyberciti.biz/faq/linux-unix-bsd-clear-sendmail-queue/ http://www.cyberciti.biz/faq/linux-unix-bsd-clear-sendmail-queue/#comments Fri, 01 Jul 2011 21:50:55 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10768 How can I permanently delete all e-mail messages in the Sendmail mail server (SMTP) queue using UNIX / Linux command prompt?]]> http://www.cyberciti.biz/faq/linux-unix-bsd-clear-sendmail-queue/feed/ 4 UNIX: Find Out the Server Modelhttp://www.cyberciti.biz/faq/hpux-aix-sun-solaris-unix-command-get-server-model/ http://www.cyberciti.biz/faq/hpux-aix-sun-solaris-unix-command-get-server-model/#comments Fri, 20 May 2011 12:24:14 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10544 How do I find out my UNIX server model? What is my UNIX server model?]]> http://www.cyberciti.biz/faq/hpux-aix-sun-solaris-unix-command-get-server-model/feed/ 4 HowTo: UNIX Set Date and Time Commandhttp://www.cyberciti.biz/faq/unix-set-date-command/ http://www.cyberciti.biz/faq/unix-set-date-command/#comments Tue, 26 Apr 2011 22:16:09 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10466 I recently noticed that one of my UNIX servers was about 4 hours behind the correct time. I wanted to correct the date and time manually. How do I set date and/or time under UNIX operating systems using command line options?]]> http://www.cyberciti.biz/faq/unix-set-date-command/feed/ 3 UNIX / Linux: Increment The Datehttp://www.cyberciti.biz/faq/increment-the-date/ http://www.cyberciti.biz/faq/increment-the-date/#comments Tue, 26 Apr 2011 21:16:27 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10450 I want to increment the date under UNIX or Linux operating system while writing shell scripts. For example Apr/27/2011 should be incremented as Apr/28/2011 and so on. How do I increment a date in UNIX or Linux shell?]]> http://www.cyberciti.biz/faq/increment-the-date/feed/ 1 UNIX: Lynx Browser Set / Change the Default Home Pagehttp://www.cyberciti.biz/faq/linux-bsd-appleosx-unix-lynx-browser-change-startup-page/ http://www.cyberciti.biz/faq/linux-bsd-appleosx-unix-lynx-browser-change-startup-page/#comments Mon, 25 Apr 2011 13:22:54 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10414 How do I change the default home page with Lynx browser under UNIX or Linux operating system? How do I set the startup page to http://google.co.uk with Lynx?]]> http://www.cyberciti.biz/faq/linux-bsd-appleosx-unix-lynx-browser-change-startup-page/feed/ 0 Linux / UNIX: See If Particular Users Are Logged Into Serverhttp://www.cyberciti.biz/faq/linux-unix-see-if-particular-users-are-logged-into-server/ http://www.cyberciti.biz/faq/linux-unix-see-if-particular-users-are-logged-into-server/#comments Mon, 18 Apr 2011 19:48:34 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10309 How do I see if my friends or coworkers are logged into the same Linux or BSD or UNIX (AIX, HP-UX, Apple OS X) server / workstation as I am from a command line?]]> http://www.cyberciti.biz/faq/linux-unix-see-if-particular-users-are-logged-into-server/feed/ 1 HowTo: Convert Between Unix and Windows text fileshttp://www.cyberciti.biz/faq/convert-ctrlm-carriage-return-between-unix-windows-textfiles/ http://www.cyberciti.biz/faq/convert-ctrlm-carriage-return-between-unix-windows-textfiles/#comments Mon, 18 Apr 2011 18:33:48 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10301 How can I convert newline [ line break or end-of-line (EOL) character ] between Unix and Windows text files?]]> http://www.cyberciti.biz/faq/convert-ctrlm-carriage-return-between-unix-windows-textfiles/feed/ 0 Linux / Unix: Look Up IP Addresseshttp://www.cyberciti.biz/faq/linux-unix-apple-osx-bsd-look-up-ip-addresses/ http://www.cyberciti.biz/faq/linux-unix-apple-osx-bsd-look-up-ip-addresses/#comments Wed, 13 Apr 2011 21:05:05 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10232 How can I look up IP addresses under UNIX or Linux operating systems using command line options?]]> http://www.cyberciti.biz/faq/linux-unix-apple-osx-bsd-look-up-ip-addresses/feed/ 0 Lighttpd Configure Subdomainhttp://www.cyberciti.biz/faq/linux-unix-setup-adding-subdomain-with-lighttpd-webserver/ http://www.cyberciti.biz/faq/linux-unix-setup-adding-subdomain-with-lighttpd-webserver/#comments Fri, 18 Mar 2011 19:39:34 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10161 I've main domain configured at http://example.com and I'd like to use http://support.example.com with different files. How do I add subdomain support with Lighttpd web server under UNIX or Linux operating systems? ]]> http://www.cyberciti.biz/faq/linux-unix-setup-adding-subdomain-with-lighttpd-webserver/feed/ 0 Linux / UNIX: scp / rsync File Name With colon (:) In Ithttp://www.cyberciti.biz/faq/rsync-scp-file-name-with-colon-punctuation-in-it/ http://www.cyberciti.biz/faq/rsync-scp-file-name-with-colon-punctuation-in-it/#comments Mon, 14 Feb 2011 18:11:35 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=10017 How do I copy a file with Colon (punctuation) name in it. When I type the following command to copy "file:name.txt" to a remote host called server1:
scp file:name.txt user@server1:/path
I get the following error:
ssh: Could not resolve hostname s: Name or service not known
How do I copy file with scp or rsync with a colon in it?]]> http://www.cyberciti.biz/faq/rsync-scp-file-name-with-colon-punctuation-in-it/feed/ 8 Linux / UNIX: TZ Environment Variablehttp://www.cyberciti.biz/faq/linux-unix-set-tz-environment-variable/ http://www.cyberciti.biz/faq/linux-unix-set-tz-environment-variable/#comments Sat, 29 Jan 2011 11:54:40 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9863 What is the correct format for a TZ (time zone) environment variable for use with the Linux or UNIX operating system?]]> http://www.cyberciti.biz/faq/linux-unix-set-tz-environment-variable/feed/ 0 Screen Command: Set Baud Rate [ Terminal Communication ]http://www.cyberciti.biz/faq/unix-linux-apple-osx-bsd-screen-set-baud-rate/ http://www.cyberciti.biz/faq/unix-linux-apple-osx-bsd-screen-set-baud-rate/#comments Thu, 27 Jan 2011 20:38:51 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9848 I need to do router or network switch configuration via a console port such as COM1 (ttyS0 under Linux). How do I use the screen command for a serial terminal emulator network with different baud rates under UNIX or Linux operating systems?]]> http://www.cyberciti.biz/faq/unix-linux-apple-osx-bsd-screen-set-baud-rate/feed/ 0 UNIX / Linux: Rsnapshot Restore Backupshttp://www.cyberciti.biz/faq/restoring-backup-files-with-rsnapshot-unix-linux-bsd-appleosx/ http://www.cyberciti.biz/faq/restoring-backup-files-with-rsnapshot-unix-linux-bsd-appleosx/#comments Thu, 27 Jan 2011 12:28:59 +0000 Vivek Gite http://www.cyberciti.biz/faq/?p=9840 I've created the backup server using this tutorial under Redhat and Debian Linux systems. How do I restore files (such as /var/www/html) with rsnapshot backup tool? How do I restore MySQL database dumps with rsnapshot under UNIX or Linux operating systems? ]]> http://www.cyberciti.biz/faq/restoring-backup-files-with-rsnapshot-unix-linux-bsd-appleosx/feed/ 2