I am looking for a single line that does return the pid of a running process.
Currently I have:
ps -A -o pid,cmd|grep xxx|head -n 1
And this returns the fist
pid, command. I need only the first number from the output and ignore the rest. I suppose
awk would help here but my experience with them is limited.
Also, this has another problem, it will return the pid of grep if the xxx is not running.
It's really important to have a single line, as I want to reuse the output for doing something else, like killing that process.