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Shell Programming and Scripting
Get all child processes of a process
Post 302974651 by SkySmart on Thursday 2nd of June 2016 02:09:37 AM
06-02-2016
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#include <stdio.h>
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How many child processes are actually created when running this code ?
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setpgrp () ;
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if ( i & 1 ) setpgrp () ;
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LEARN ABOUT HPUX
wait
wait(1) General Commands Manual wait(1) NAME
wait - await process completion SYNOPSIS
[pid] DESCRIPTION
If no argument is specified, waits until all processes (started with of the current shell have completed, and reports on abnormal termina- tions. If a numeric argument pid is given and is the process ID of a background process, waits until that process has completed. Other- wise, if pid is not a background process, exits without waiting for any processes to complete. Because the system call must be executed in the parent process, the shell itself executes without creating a new process (see wait(2)). Command-Line Arguments supports the following command line arguments: The unsigned decimal integer process ID of a command, whose termination is to wait for. WARNINGS
Some processes in a 2-or-more-stage pipeline may not be children of the shell, and thus cannot be waited for. SEE ALSO
csh(1), ksh(1), sh-posix(1), sh(1), wait(2). STANDARDS CONFORMANCE
wait(1)