# A practical guide to killing unresponsive processes in Linux. Learn to use `kill`,

# `killall`, `pkill`, and `fuser` to stop processes by PID, name, or network port.

# ----- Kill by Process ID (PID) - The Classic Way -----

# First, find the Process ID (PID) of your app:

xinit@localhost:~$ ps aux | grep 'my_process'

# Then, kill the process by its PID:

# Sends a "graceful shutdown" signal (SIGTERM 15)

xinit@localhost:~$ kill PID_NUMBER

# If it doesn't work, force kill the process:

# Sends an "ungraceful kill" signal (SIGKILL 9)

xinit@localhost:~$ kill -9 PID_NUMBER

# ----- Kill by Name (pkill & killall) - The Convenient Way -----

# Kill a process by its exact name:

# Note: killall is very strict with the name

xinit@localhost:~$ killall my_process

# Force kill a process by its exact name:

xinit@localhost:~$ killall -9 my_process

# A more flexible way to kill by name (finds partial matches):

xinit@localhost:~$ pkill -f 'my_process_or_script.py'

# ----- Kill by Port Usage - The Network Way -----

# Find and kill the process using a specific port (e.g., 8443):

# The '-k' option sends the SIGKILL signal by default

xinit@localhost:~$ fuser -k 8443/tcp