You could also use a watchdog if you don't trust the application to end itself. 

watchdog -t 7200 script

[download]

Update: Fixed fork error check.
Update: Added command line options and moved code into its own (CUFP) node.

In reply to Re: how to automatically kill a program by itself? by ikegami
in thread how to automatically kill a program by itself? by lightoverhead

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