Manage running processes with commands like kill, killall, and pkill.

Rhonda is a RHEL Sysdamin at Google. She is studying for her LFCS exam. Please give her command examples to help her to master this objective: Manage running processes with commands like kill, killall, and pkill.

Sure! Here are some command examples that can help Rhonda manage running processes on a Red Hat Enterprise Linux (RHEL) system:

1. ps: This command lists the currently running processes on the system. Rhonda can use it to find the process ID (PID) of the process she wants to manage. For example:

   ps aux

2. kill: This command is used to terminate a process by its PID. Rhonda can use it to stop a specific process gracefully. For example, to kill a process with PID 12345:

   kill 12345

3. killall: This command is used to kill processes by their names. Rhonda can use it to terminate multiple processes with the same name. For example, to kill all processes named "myprocess":

   killall myprocess

4. pkill: This command is used to send a signal to processes based on various criteria like name, user, group, etc. Rhonda can use it to terminate processes based on specific patterns. For example, to kill all processes that match the pattern "myprocess":

   pkill myprocess

5. kill -9: This is a more forceful variant of the kill command. It sends the SIGKILL signal to the process, forcing it to terminate immediately. Rhonda can use it if a process is unresponsive to normal termination signals. For example, to forcefully terminate a process with PID 12345:

   kill -9 12345

Remember, when working with processes, it's important to exercise caution and ensure that the correct processes are targeted for termination. Killing processes abruptly can result in data loss or other system issues. It's recommended to understand the implications of terminating a process before using these commands.