Useful .zshrc stuff

.zshrc

# Command for terminating process on a port number
# $ kill_on_port <port_number>
function kill_on_port() {
    if [ $# -eq 0 ]
    then
        echo "Please provide a port number"
        return
    fi

    if [ -z "$1" ]
    then
        echo "No port supplied"
        return
    fi

    kill -9 $(lsof -ti:$1)
}