Workshop

The first number is the process ID (or PID). This is the number you refer to when you want to do
something to this process. For example, the commands for killing and restarting this process might look
something like this:
$ ps -ax | grep httpd
52 ? S 0:01 /usr/sbin/httpd
$ su
Password:
# kill 52
# ps -ax | grep httpd
# /usr/sbin/httpd
# exit
$ ps -ef | grep httpd
871 ? S 0:01 /usr/sbin/httpd
You’ll notice here that I don’t need to use su until I actually kill the process and restart it. Then I
immediately exit the su session so that I keep my super user risk at a minimum. I also like to recheck the
process table before and after I’ve restarted the daemon just to make sure it’s not out there after I kill it or
to make sure that it is there after I restart it.
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