pidof = find the process ID of a running program
Pidof finds the process id's (pids) of the named programs. It prints those id's on the standard output. This program is on some systems used in run-level change scripts, especially when the system has a System-V like rc structure.
sysadmin@codewarden:~$ pidof apache2 5098 5095 5094 5092
pgrep = look up or signal processes based on name and other attributes, pgrep looks through the currently running processes and lists the process IDs which matches the selection criteria.
sysadmin@codewarden:~$ pgrep apache2 5092 5094 5095 5098
pgrep, (p) = process, grep = grep prints the matching lines
Want to know more about pgrep & pidof ? Just run in terminal as
# man pidof
# man pgrep
How-To: Kill a Process Using the 'pidof' Command If a process hangs and you want to easily kill it, type in a console:
kill -9 $(pidof process_name)
And replace process_name with a currently running process. For example, to kill Amarok you would issue the following:
kill -9 $(pidof amarokapp)
Or Banshee, as another example:
kill -9 $(pidof banshee)
kill -9 $(pidof banshee-1)
pidof is a command that finds the process ID (PID) of a given application. What is inside the ( and ) parenthesis is replaced with a certain PID, and the process which has that PID will be killed.