killall:tldr:4d007

The killall command is used in Unix-like operating systems to terminate processes by their names.

The -KILL option is a signal that is sent to the specified processes when executing the killall command. It denotes the "kill" signal, which is a signal that immediately terminates a process without allowing it to perform any cleanup actions.

${process_name} is the placeholder for the name of the process you want to kill. You need to replace ${process_name} with the actual name of the process you want to terminate. For example, if you want to kill a process called "my_process", the command will be killall -KILL my_process.

So, the command killall -KILL ${process_name} will send the "kill" signal to all the processes with the specified name, terminating them abruptly without giving them a chance to clean up. Note that using this command will forcefully terminate all instances of the specified process, which can sometimes result in data loss or other unexpected consequences.