Save the PID of your background process at the time you start it.
$$
is the current script's pid$!
is the pid of the last background process
For instance :
/usr/bin/php myscript.php > /dev/null &
LAST_PID=$!
kill $LAST_PID
Frage
OK, so here's what I want...
I'm triggering the background execution of a php script like this :
/usr/bin/php myscript.php > /dev/null &
The script runs for some time, and stops when finished.
However, I'd really need to have its process id (PID) so that I could kill the process (if needed) by :
kill -SIGTERM PID
However, how do I get the PID of that particular process?
NOTE: There may be numerous php
processes at any time, so targetting all instances running is not what we need.
Lösung
Save the PID of your background process at the time you start it.
$$
is the current script's pid$!
is the pid of the last background processFor instance :
/usr/bin/php myscript.php > /dev/null &
LAST_PID=$!
kill $LAST_PID