Kills process running on port

psportkill.sh

# Add to .bashrc or .zshrc
psportkill() {
  if [ $# -eq 0 ]
  then
    echo "Missing port number. Usage: psportkill 5000"
    exit 1
  fi
  echo "Killing process on port $1"
  lsof -i 4tcp:$1 -sTCP:LISTEN | awk '{if(NR>1)print $2}' | xargs kill
  if [ $? -eq 0 ]
  then
    echo "Process killed."
    exit 0
  else
    echo "Failure: no process found running on port $1" >&2
    exit 1
  fi
}