Find the process ID: `ps aux | grep
Stop a process by PID: `kill
Force stop a process: `kill -9
Stop a process by name: `pkill
Force stop a process by name: `pkill -9
Stop all matching processes: `killall
Use `top` or `htop`, select the process, and kill it
Stop a foreground process: `Ctrl + C`
Suspend a foreground process: `Ctrl + Z`
Resume a suspended process in background: `bg`
Bring a suspended process to foreground: `fg`