Nohup - Revision history

Christoph at 03:11, 14 April 2008

2008-04-14T03:11:23Z

Christoph: Nohup (command) moved to Nohup

2007-04-26T02:08:06Z

Nohup (command) moved to Nohup

Christoph at 02:07, 26 April 2007

2007-04-26T02:07:57Z

Christoph: /* See also */

2006-11-03T23:20:57Z

‎See also

Christoph at 06:47, 18 August 2006

2006-08-18T06:47:55Z

Christoph at 06:37, 18 August 2006

2006-08-18T06:37:40Z

New page

{{lowercase|nohup}}
'''nohup''' is a [[:Category:Linux Command Line Tools|command]] that is used to run another command while suppressing the action of the [[SIGHUP|HUP]] (hangup) signal, enabling the command to keep running after the user who issues the command has logged out. It is most often used to run commands in background as daemons. Output that would normally go to the terminal goes to a file called <tt>nohup.out</tt> if it has not already been redirected.

== Example ==

The first of the commands below starts the program <code>abcd</code> in the background in such a way that the subsequent log out does not stop it.

% nohup abcd &
% exit

==Existing jobs==

Some shells (e.g. [[bash]]) provide a "shell builtin" that may be used to prevent SIGHUP being sent to existing jobs, even if they were not started with nohup. The bash name for this builtin is <code>nohup</code>.

== See also ==
*[[Coreutils]]

== External links ==
*[http://www.linuxmanpages.com/man1/nohup.1.php nohup manual page]

{{linux commands}}

[[Category:Linux Command Line Tools]]

@@ Line 10: / Line 10: @@
 If standard input is a terminal, it is redirected from <tt>/dev/null</tt> so that terminal sessions do not mistakenly consider the terminal to be used by the command. This is a GNU extension; programs intended to be portable to non-GNU hosts should use <tt>nohup COMMAND [ARG]... </dev/null</tt> instead.
-If standard output is a terminal, the command's standard output is appended to the file <tt>nohup.out</tt>; if that cannot be written to, it is appended to the file <tt>$HOME/nohup.out</tt>; and if that cannot be written to, the command is not run. Any <tt>nohup.out</tt> or <tt>$HOME/nohup.out</tt> file created by <tt>nohup</tt> is made readable and writable only to the user, regardless of the current [[Umask (command)|umask]] settings.
+If standard output is a terminal, the command's standard output is appended to the file <tt>nohup.out</tt>; if that cannot be written to, it is appended to the file <tt>$HOME/nohup.out</tt>; and if that cannot be written to, the command is not run. Any <tt>nohup.out</tt> or <tt>$HOME/nohup.out</tt> file created by <tt>nohup</tt> is made readable and writable only to the user, regardless of the current [[umask]] settings.
 If standard error is a terminal, it is redirected to the same file descriptor as the (possibly-redirected) standard output.

← Older revision		Revision as of 02:07, 26 April 2007
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−	~~{{lowercase\|nohup}}~~
	'''nohup''' is a [[:Category:Linux Command Line Tools\|command]] that is used to run another command while suppressing the action of the [[SIGHUP\|HUP]] (hangup) signal, enabling the command to keep running after the user who issues the command has logged out. It is most often used to run commands in background as daemons. Output that would normally go to the terminal goes to a file called <tt>nohup.out</tt> if it has not already been redirected.		'''nohup''' is a [[:Category:Linux Command Line Tools\|command]] that is used to run another command while suppressing the action of the [[SIGHUP\|HUP]] (hangup) signal, enabling the command to keep running after the user who issues the command has logged out. It is most often used to run commands in background as daemons. Output that would normally go to the terminal goes to a file called <tt>nohup.out</tt> if it has not already been redirected.

← Older revision	Revision as of 02:08, 26 April 2007
(No difference)

@@ Line 39: / Line 39: @@
 == See also ==
 *[[Coreutils]]
 {{linux commands}}
 [[Category:Linux Command Line Tools]]

@@ Line 1: / Line 1: @@
 {{lowercase|nohup}}
 '''nohup''' is a [[:Category:Linux Command Line Tools|command]] that is used to run another command while suppressing the action of the [[SIGHUP|HUP]] (hangup) signal, enabling the command to keep running after the user who issues the command has logged out. It is most often used to run commands in background as daemons. Output that would normally go to the terminal goes to a file called <tt>nohup.out</tt> if it has not already been redirected.
 == Example ==
@@ Line 15: / Line 39: @@
 == See also ==
 *[[Coreutils]]
 {{linux commands}}
 [[Category:Linux Command Line Tools]]