A little script that kills the process that use a given port

kport.js

#! /home/sebassdc/.nvm/versions/node/v6.9.1/bin/node
// place up there the output of "whereis node"
const cp = require('child_process')

if (process.argv.length < 3 || process.argv.length > 3) {
    throw new Error('must be one argument')
}

cp.exec(`netstat -ap | grep :${process.argv[2]}`, (err, stdout, stderr) => {
    if (err) {
        console.log(`maybe the port: ${process.argv[2]} is not been used`)
        process.exit()
    }

    let stdout_splited = stdout.split(' ')

    let unwanted_dude;
    stdout_splited.forEach(dude => {
        if (dude.match(/\b\/\b/g)) {
            unwanted_dude = dude
        }
    })
    console.log(`${unwanted_dude} was using the port`)
    cp.exec( `kill -9 ${unwanted_dude.split('/')[0]}` , (err, stdout, stderr) => console.log(stdout))
})