linux – How to save process pid to variable

Question:

The tmp/pids/server.pid contains one line – the process number.

How to get this line and assign this value to a variable?

In the end, you just need to kill the process with kill -9 .

Answer:

Example:

$ pid=$(cat /var/run/sshd.pid)
$ echo $pid
3528

if you just need to kill the process, then you can do it without a variable:

kill -9 $(cat /var/run/sshd.pid)