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Top Forums UNIX for Advanced & Expert Users Finding Out When A Process Has Finished? Post 9626 by Perderabo on Wednesday 31st of October 2001 08:34:56 AM
Old 10-31-2001
ps and top require a nontrivial amount of resources to run. And then you still must parse the output. The cheapest way to see if a process is running is via the kill() system call. If you call kill with signal set to zero, error checking is performed but no signal is actually sent.

This works from the shell as well. You can do "kill -0 $pid" and then check the return code. If it worked, the process is still alive.
 

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dxproctuner(8)						      System Manager's Manual						    dxproctuner(8)

NAME
dxproctuner - Manages and monitors system processes SYNOPSIS
/usr/bin/X11/dxproctuner OPTIONS
Process Tuner accepts all of the standard X Toolkit command line options, which are documented in the OPTIONS section in the X(1X) refer- ence page. DESCRIPTION
The Process Tuner application, dxproctuner, is used to monitor and manage processes. Use Process Tuner to: Display a list of processes and their characteristics Display the processes running for yourself or all users Display and modify process priorities Send a signal to a process The Process Tuner application can be invoked from the CDE Application Manager from the following categories: Application Group: System_Admin System Admin Subgroup: MonitoringTuning EXAMPLES
To start Process Tuner from the command line, enter: dxproctuner You can view the Process Tuner online help volume without running the application. To open the Process Tuner help volume from the command line, enter the following command: /usr/dt/bin/dthelpview -h /usr/dt/appconfig/help/C/Dxproctuner.sdl FILES
Contains user preferences that control the appearance of the application Contains the Process Tuner application executable Contains the Process Tuner help volume Contains the default values for the application's X resources SEE ALSO
Commands: kill(1), ps(1), X(1X) System Calls: exit(2), kill(2), sigaction(2) Files: signal(4) dxproctuner(8)
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