Kill Port: Liberate your hanging ports

Hello,

While developing on Linux I often find myself searching for the process id of the process that keeps a port occupied. I always forget the commands and I have to Google them or ask an LLM.

So I’ve asked a LLM to come with a bash to automate the process, and it came up with:

killport() {if [ -z "$1" ]; thenecho "Usage: killport <port_number>"echo "Example: killport 4000"return 1fi    local port=$1      # Get PIDs listening on the port     local pids=$(lsof -ti:"$port" 2>/dev/null)      if [ -z "$pids" ]; then         echo "No process found listening on port $port"         return 0     fi      echo "Killing processes on port $port (PIDs: $pids)"     kill -9 $pids     echo "Done." }

Then I added the function to my zshrc file.

Now whenever I need to shut down the application keeping a certain port busy I issue the killport command:

killport 8080

Thanks for reading!