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Full Discussion: Monitoring processes in parallel and process log file after process exits
Top Forums Shell Programming and Scripting Monitoring processes in parallel and process log file after process exits Post 303003307 by rbatte1 on Tuesday 12th of September 2017 06:19:42 AM
Old 09-12-2017
I think that this might be the wait and following commands. They are all serial, i.e. you wait and then do something for each PID in sequence.

You might need to do something more like this:-

Code:
while read PID OPFILE
do
    (wait $PID ; process_OPFILE $OPFILE ) &
done < pid_pfile.txt              # Read each line of the file in a loop

wait    # Make sure all have completed before continuing to any end of script process.

This would create a watcher for each main process that you want to process the report on afterwards. You can see that I read the two variables from the file at the same time at the start of the loop and you can then use them as you wish. This is just an example. Writing a function for process_OPFILE to keep the code neater if you have a lot to do.

Additionally, I've seen you try a sed of a file writing the output to the same file. Whilst probably no longer required, this will fail because the redirector > will open and empty the file before you have had chance to read it. If you want to update a file like this, try:-
Code:
sed -i "/$DPID/d" pid_pfile.txt



Does this help you?



Robin
 

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