nodejs-sh

nodejs-sh

This is a Node.js port of the sh Python library, that allows you to call any program as if it were a function:

const {ifconfig} = require('nodejs-sh')

let output = await ifconfig('eth0').toString()
console.log(output)

Output:

eth0      Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          inet addr:192.168.1.100  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: ffff::ffff:ffff:ffff:fff/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0 GB)  TX bytes:0 (0 GB)

Installation

npm install nodejs-sh

Quick Reference

Passing Arguments

const {ls} = require('nodejs-sh')

ls('-l', '/tmp', '--color=never').pipe(process.stdout)

Non-zero Exit Codes

const {ls} = require('nodejs-sh')

try {
  await ls('/doesnt/exist')
} catch (exitCode) {
  if (exitCode === 2) console.log("directory doesn't exist")
}

Redirection

const fs = require('fs')
const {ls} = require('nodejs-sh')

let file = fs.createWriteStream('file.txt')
ls('test/').pipe(file).on('finish', () => {
  let output = fs.readFileSync('file.txt', 'utf8')
})

Piping

const {ls, wc} = require('nodejs-sh')

let output = await ls('-1').pipe(wc('-l')).toString()

Background Processes

const {find} = require('nodejs-sh')

let p = find('-name', 'index.js')
// ... do other things ...
await p

TypeScript

import * as sh from "nodejs-sh";

const output = await sh.ls("-1").pipe(sh.wc("-l")).toString();