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Get return value of process by PID

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linux-howto

http://unix.stackexchange.com – If I have the PID of a process that was killed, how might I get the return status of the process? I am particularly interested to know if the return status was 143 (kill) or 137 (kill -9) as I don't know what is killing the process. It is a Python script being run from a PHP script on a server that I don't have root access for. The Python script runs for a few minutes, but PHP is limited to running for 30 seconds. PHP has facility to get the return status with exec() however that won't work if the PHP script has timed out! (HowTos)