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Top Forums UNIX for Dummies Questions & Answers Check whether a process is alive or not Post 302119628 by matrixmadhan on Thursday 31st of May 2007 05:37:54 AM
Old 05-31-2007
Am sure there had been so many threads regarding the same
with solutions like, having control file or pid file

or checking with ps -ef and grep in the shell script itself.

You would find your answer with search. Smilie
 

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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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