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Full Discussion: Export variable, as a background process
Top Forums Shell Programming and Scripting Export variable, as a background process Post 302447784 by methyl on Tuesday 24th of August 2010 10:01:34 AM
Old 08-24-2010
Or we can use the basic shell "jobs" command. Obviously we would need to build a counter into the loop to allow us to stop after a given amount of time.


Code:
while [ "`jobs`" ]
do
        echo "still running"
        sleep 10
done


Tip. The "ps -ef" command sequence posted assumes unique matches for the "grep". You are very likely to get false matches.
Confining the search to one pid with "ps -fp<pid>" would be safer and quicker.
Actually for anything mission critical I would never rely on "ps -ef" because it occasionally misses processes (or does not reply at all) when the kernel is busy.
This User Gave Thanks to methyl For This Post:
Cranie
 

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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)
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