Bash script that kills a process

README.md

Usage

This script will kill the pid process that is responsible for keeping a port open. Use as follows to kill the process that corresponds to a given port:

./killport [PORT]

If the command killport is not recognized, make it executable:

chmod +x ./killport

killport

#!/usr/bin/env bash
#################################################
# Lists the process running on the passed port  #
# and then confirms whether you want to kill it #
#################################################
#Get the port that the user passed in
port=$1

if [[ ${#port} == 0 ]]; then
 echo "Kills a service running on the specified port."
 echo "usage: killport PORT"
 exit;
fi

# Get everything running on this port
lsofcmd="lsof -i :$port"

# echo the command, and then iterate through each line of the output
counter=0
$(echo $lsofcmd) | while read -r line; do
  echo $line
  counter=$((counter+1)) # We want to skip the first line, as the first line is the column headers, from lsof

  if [[ $counter > 1 ]]; then
    procname=$(echo $line | awk '{print $1}')
    pid=$(echo $line | awk '{print $2}')

    echo "Killing $procname process with PID: $pid"
    kill -9 $pid;
  fi
done