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Top Forums Shell Programming and Scripting How to make the parent process to wait for the child process Post 302354985 by sennidurai on Monday 21st of September 2009 06:31:49 AM
Old 09-21-2009
How to make the parent process to wait for the child process

Hi All,

I have two ksh script. 1st script calls the 2nd script and the second script calls an 'C' program.

I want 1st script to wait until the 'C' program completes.

I cant able to get the process id for the 'C' program (child process) to make the 1st script to wait for the second script(child script) to complete

Can any one help me, how to get the process id for the 'C' program in unix shell script or is there any other way to make the parent script to wait for the child process.

Thanks in advance.
sennidurai
 

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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)
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