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how to trap unix signal if the process killed/interupt occured in bash...

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# 1  
Old 09-22-2007
how to trap unix signal if the process killed/interupt occured in bash...
hey champs,

I have a process running.......i have to catch/trap the signal when the process is being interupted/killed (kill -9 pid) option......

how can i achieve the same thru my process........

let my process is a.sh and it supposed to take 13 mins to complete, but due to some problem , somebody killed that process a.sh using kill -9 <pid of a.sh>, so i want to log the message that process a.sh is killed ....

how can i achieve...
# 2  
Old 09-22-2007
You cannot trap SIGKILL. Your only option would be to monitor it from another process.
# 3  
Old 09-22-2007
you are right...i sudn't trap the kill, but what about other signals, how can i catch .....thru trap....in bash

i am doing following

function trap_cmd {
echo "It's wrong way to stop the process."
exit 2
}

trap 'trap_cmd' 1 2 3 4 5 6 7 8 10 12 13 14 15 20

but even though CTRL-C,Z ..... it's not going to echo me It's wrong way to stop the process. Smilie

so kindly suggest....for bash.
# 4  
Old 09-22-2007
works in bash 2.05
# 5  
Old 09-22-2007
Unless of course you are doing something strange like piping the output of a function, in which case there will be strange behavior becasue of the focred subshell.
# 6  
Old 09-23-2007
hey buddies, thanx a lot....
i found the problem, the thing is TRAP is not yet installed...in my box...

i need further assistance from your end, i.e.
1 I would like to install the TRAP in my box,
>The steps, from where should i get the utility, and instruction
manual from your side........can i get it ????
2 This question is the silly one, but >how to know which version of
bash i am working ????

Kindly assist ....
# 7  
Old 09-23-2007
Quote:
Originally Posted by manas_ranjan
hey buddies, thanx a lot....
i found the problem, the thing is TRAP is not yet installed...in my box...

i need further assistance from your end, i.e.
1 I would like to install the TRAP in my box,
>The steps, from where should i get the utility, and instruction
manual from your side........can i get it ????
2 This question is the silly one, but >how to know which version of
bash i am working ????

Kindly assist ....
One more thing my box is Linux 2.6.9
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