Question

Say I have a PHP script,

//main.php -> PID = 1002
<?php 
exec('ProcessOne');
exec('ProcessTwo');
//... many other exec calls
?>

The main.php creates many other processes with their own pids which may not be recorded/tracked by the script, but the pid of main.php is known.

My question is: how do I kill all those processes created by main.php(including main.php) by only knowing the pid of main.php which is 1002 in my example?

The script should run in Linux.

Thanks

Answer 1

pkill -TERM -P 1002

pkill -P PID gives you all child-proccess, -TERM sends the TERM Signal to all children.

To kill the children of the children:

kill `pstree -p 1002 | sed 's/(/\n(/g' | grep '(' | sed 's/(\(.*\)).*/\1/' | tr "\n" " "`

Modified version from Walking a process tree.