A signal trap that logs when your script was killed and what other processes were running at that time

trap "echo \"$0 process $$ killed on $(date).\" | tee ${0##*/}_$$_termination.log; echo 'Active processes at the time were logged to ${0##*/}_$$_termination.log'; ps u >> ${0##*/}_$$_termination.log; exit " HUP INT QUIT ABRT TERM STOP
trap is the bash builtin that allows you to execute commands when the current script receives a particular signal. Uses $0 for the script name, $$ for the script PID, tee to output to STDOUT as well as a log file and ps to log other running processes.
Sample Output
./traptest.sh process 11009 killed on Wed Feb 18 12:08:09 PST 2009.
Active processes at the time were logged to traptest.sh_11009_termination.log

2009-02-18 20:13:29

What Others Think

I like the concept, but maybe a simpler example to show how to use trap? It took me a minute to realize that the submission was one command that takes in a string and a list of signals. Either way, you definitely taught me new, very useful command! Cheers!
joem86 · 621 weeks and 3 days ago
Sure thing joem86! I posted it because it was something useful that I needed in this particular form, but a simplified example of trap is surely useful to others.
DEinspanjer · 621 weeks and 3 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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