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I would like to send a SIGTERM signal to a nohup process, but this signal is completely ignored, only SIGKILL works, which is considered a bad choice to terminate a shell script. Do I have any options here or do I have to stick to SIGKILL? Thanks in advance.

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migrated from stackoverflow.com Nov 14 '12 at 13:39

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You may want to take this to unix.stackexchange.com – Ali Nov 13 '12 at 18:40
    
I'm pretty sure nohup is not supposed to trap SIGTERM, unless you happen to be using the 4.3 BSD version. Maybe the script itself is ignoring the signal? – Frédéric Hamidi Nov 13 '12 at 18:48
    
so sigterm is masked as well, check for external executions inside your bash script and find which one is responsible, you may find an alternative solution – arash kordi Nov 13 '12 at 18:50
    
If the author of the program made it ignore SIGTERM, surely he will have documented a way to stop it. Perhaps it really does want SIGKILL. Without access to information about this particular program, we can only guess. – tripleee Nov 13 '12 at 18:53
    
Did you try SIGQUIT (before SIGKILL)? – Basile Starynkevitch Nov 13 '12 at 19:17
up vote 2 down vote accepted

I'm sure nohup traps only SIGHUP and not SIGTERM.

If I remember correctly, bash ignores all SIGTERM and SIGQUIT signals sent to it, unless traps have been setup. Look here to findout how to setup traps in your script: http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_12_02.html

You can verify it this is the problem by first starting your script without nohup, then send a SIGTERM to it and see if it is ignored.

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