On Unix or Linux systems, you can use the following command to end a process and its child process tree:
kill -TERM -<pid>
where <pid>is the process ID of the process you want to end. This command will send a TERM signal to the specified process, informing it to exit, and at the same time send the same signal to all its child processes, recursively ending the entire process tree.
If you wish to forcefully end the process tree without waiting for them to exit, you can use the following command:
kill -KILL -<pid>
This command sends a KILL signal to the specified process, forcibly ending the process and all its child processes, but does not perform any cleanup operations, which may cause data loss or other problems. It is recommended to use this command when necessary and avoid using it to end processes if possible.
Be aware that ending a process tree can have impacts on running applications and the system, so use this command with caution and make sure you understand its effects and risks.