Topics: AIX, System Admin

Parent process ID

It's very easy to determine the parent process ID, without looking it up in the process list. For example for the current korn shell process, you can determine the parent process of the korn shell process, by looking at the process list: 

 # ps -ef | grep ksh | grep -v grep
    root  8061040 17891578   0 22:28:32  pts/0  0:00 -ksh
In the example above you can see that the parent process of the korn shell process with PID 8061040 is 17891578. The same answer can be retrieved by simply looking at the PPID variable: 
# echo $PPID
17891578




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