echo hosts files

echo-hosts.js

const fs = require('fs')

console.log('========= About to read /etc/hosts')
const buf = fs.readFile('/etc/hosts', (err, buf) => {
    if (err) {
        console.error('Error reading hosts file', err)
        return
    }
    console.log('========= HOSTS FILE (start)')
    console.log(buf.toString('utf-8'))
    console.log('========= HOSTS FILE (end)')


    const buf2 = fs.readFile('/etc/hostname', (err2, buf2) => {
        if (err2) {
            console.error('Error reading hostname hosts file', err2)
            return
        }
        console.log('========= hostname HOSTS FILE (start)')
        console.log(buf2.toString('utf-8'))
        console.log('========= hostname HOSTS FILE (end)')

        const buf3 = fs.readFile('/etc/resolv.conf', (err3, buf3) => {
            if (err3) {
                console.error('Error reading resolv.conf hosts file', err3)
                return
            }
            console.log('========= resolv.conf HOSTS FILE (start)')
            console.log(buf3.toString('utf-8'))
            console.log('========= resolv.conf HOSTS FILE (end)')
        })
    })
})