leemour · April 22, 2015 09:03
diff --git a/kill_process.sh b/kill_process.sh
 kill $(ps aux | grep 'puma' | awk '{print $2}')

 # The ps gives you the list of all the processes.
 # The grep filters that based on your search string, [p] is a trick to stop you picking up the actual grep process itself.
 # The awk just gives you the second field of each line, which is the PID.
 # The $(x) construct means to execute x then take its output and put it on the command line. The output of that ps pipeline inside # that construct above is the list of process IDs so you end up with a command like kill 1234 1122 7654
	kill $(ps aux \| grep 'puma' \| awk '{print $2}')

	# The ps gives you the list of all the processes.
	# The grep filters that based on your search string, [p] is a trick to stop you picking up the actual grep process itself.
	# The awk just gives you the second field of each line, which is the PID.
	# The $(x) construct means to execute x then take its output and put it on the command line. The output of that ps pipeline inside # that construct above is the list of process IDs so you end up with a command like kill 1234 1122 7654