How to force kill process in Linux using kill and killall

In Linux, you can use the kill and killall commands to force kill a process.

Using kill:

1. Find the process ID of the process you want to kill. You can use the ps command to list all running processes and their process IDs. For example:

ps aux

2. Use the kill command to send a signal to the process to terminate it. The -9 option is used to send the SIGKILL signal, which forcibly terminates the process. For example:

kill -9 12345

Replace 12345 with the actual process ID of the process you want to kill.

Using killall:

1. Find the name of the process you want to kill. You can use the ps command to list all running processes and their names. For example:

ps aux

2. Use the killall command to kill all processes with the specified name. For example:

killall process_name

Replace process_name with the actual name of the process you want to kill.

Note: Use these commands with caution, as forcibly killing a process can cause data loss or corruption. It is usually better to try to terminate the process gracefully using the kill command with a different signal, such as SIGINT (-2) or SIGTERM (-15). Consult the documentation and online resources available for more information on the various signals that can be used with the kill command.