End the process that's using a specific port.

kill-port

#! /usr/bin/env bash

function kill-port () {
    local length=$(($#-1))
    local killargs=( "${@:1:$length}" )

    shift $(($# - 1))
    local port=$1
    local pid
    pid=$(lsof -t -i :"$port")

    if [ "$pid" = "" ]; then
        echo "Port $port isn't being used."
        exit 0;
    fi

    kill "${killargs[@]}" "$pid"
    echo "PID $pid, matching port $port was terminated."
}

kill-port "$@"

$ shellcheck ./kill-port.sh

In ./kill-port.sh line 5:
    local killargs=${@:1:$length}
                   ^-- SC2124: Assigning an array to a string! Assign as array, or use * instead of @ to concatenate.


In ./kill-port.sh line 9:
    local pid=$(lsof -t -i :$port)
          ^-- SC2155: Declare and assign separately to avoid masking return values.
                            ^-- SC2086: Double quote to prevent globbing and word splitting.


In ./kill-port.sh line 16:
    kill $killargs $pid
         ^-- SC2086: Double quote to prevent globbing and word splitting.
                   ^-- SC2086: Double quote to prevent globbing and word splitting.


In ./kill-port.sh line 20:
kill-port $@
          ^-- SC2068: Double quote array expansions to avoid re-splitting elements.

Nice. I didn't know about shellcheck. Found kill-port -s KILL 1234 wasn't working, but it is now. Thanks!