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check if a PID exists on a UNIX based system

Ofek Vardi answered on July 2, 2022 Popularity 5/10 Helpfulness 1/10

answer check if a PID exists on a UNIX based system

check if a PID exists on a UNIX based system

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import os

def pid_exists(pid): 
    if pid < 0: return False #NOTE: pid == 0 returns True
    try:
        os.kill(pid, 0) 
    except ProcessLookupError: # errno.ESRCH
        return False # No such process
    except PermissionError: # errno.EPERM
        return True # Operation not permitted (i.e., process exists)
    else:
        return True # no error, we can send a signal to the process

Popularity 5/10 Helpfulness 1/10 Language python

Source: stackoverflow.com

Tags: exists pid python system unix

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