pkill, kill

pkill

• pkill is a utility that sends signals to the processes of a running program

Eg. To kill a process by name

pkill -9 <process_name>

# by exact name using regex
pkill -9 '^ssh$'

kill

• Sends a specified signal to the specified processes

Eg. To kill a process by PID

$ kill -9 <PID>

# eg.
$ kill -9 77372

View all available signals

kill -l
 1) SIGHUP       2) SIGINT       3) SIGQUIT      4) SIGILL       5) SIGTRAP
 6) SIGABRT      7) SIGBUS       8) SIGFPE       9) SIGKILL     10) SIGUSR1
 ...