You can list all the running processes on a Linux box with
ps aux, but often you're looking for a specific process. This is pretty easily accomplished with
ps aux | grep /usr/sbin/sshd
The problem with this is that you often pick up you own
grep in the output:
$ ps aux | grep /usr/sbin/sshd root 883 0.0 0.0 76640 7428 ? Ss Oct18 0:00 /usr/sbin/sshd -D -oCiphers... bakers 11691 0.0 0.0 12148 1104 pts/0 S+ 08:09 0:00 grep --color=auto /usr/sbin/sshd
The quick and dirty solution is to do some trickery with a regular expression and grep:
$ ps aux | grep -P '/usr/sbin/[s]shd' root 883 0.0 0.0 76640 7428 ? Ss Oct18 0:00 /usr/sbin/sshd -D -oCiphers...
The square brackets tell grep to match a character class with only one character in it. This prevents grep from picking up itself, but still matches what you want.