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Full Discussion: Run a detached process
Top Forums UNIX for Dummies Questions & Answers Run a detached process Post 302418794 by Corona688 on Wednesday 5th of May 2010 11:12:49 AM
Old 05-05-2010
To run a detached command you need to redirect all file descriptors so the terminal isn't waiting for them to close. In BASH:
Code:
command > outfile 2> errfile < /dev/null & disown
# you can now log out and have command continue to run
exit

'outfile' and 'errfile' can be /dev/null as well if you don't need to save any output. If you're not using bash, ignore the the 'disown'.
 

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disown(1)							   User Commands							 disown(1)

NAME
disown - ksh93 built-in function to disassociate a job with the current shell SYNOPSIS
disown [job ...] DESCRIPTION
The ksh93 disown command prevents the current shell from sending a HUP signal to each of the specified jobs when the current shell termi- nates a login session. If job is omitted, disown sends the HUP signal to the most recently started or stopped background job. OPERANDS
The following operands are supported: job Specifies the job or jobs on which disown operates. Specify job as one of the following: number Refers to a process ID. -number Refers to a process group ID. %number Refers to a job number. %string Refers to a job whose name begins with string. %?string Refers to a job whose name contains string. %+ or %% Refers to the current job. %- Refers to the previous job. EXIT STATUS
0 Successful completion. >0 One or more specified jobs does not exist. EXAMPLES
Example 1 Disowning a Job The following example disowns job 1: example% disown %1 AUTHORS
David Korn, dgk@research.att.com ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |Uncommitted | +-----------------------------+-----------------------------+ SEE ALSO
bg(1), jobs(1), ksh93(1), wait(1), attributes(5) SunOS 5.11 18 Apr 2007 disown(1)
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