Shell Kill Process at Port

For more info, check out the Stack Overflow thread this was shamelessly stolen from.

Find a process PID using a port using:

# Find processes using port 3000.
sudo lsof -i :3000

Kill the process using PID with:

# Kill a process.
kill -15 <pid>

# Use kill -9 to REALLY kill it.

Combine this all together with:

# Where <port> is the port you want to kill.
kill -15 $(lsof -i :<port> | awk 'NR > 1 {print $2}')