async shellExec

shellExec.js

/* eslint no-console: 0 */
'use strict'
const shellExec = (
    cmd,                    // shell command to execute
    suppressErr=false,      // drop errors if any
    suppressOutput=false    // execute silent
) => new Promise((resolve,reject)=>{

    const { spawn } = require('child_process');
    const worker = spawn(cmd, { shell: true })

    if(!suppressOutput){
        worker.stdout.on('data', (data) => {
            console.log(`${data}`);
        });

        if(!suppressErr){
            worker.stderr.on('data', (data) => {
                console.log(`${data}`);
            });
        }
    }

    worker.on('close', (code) => {
        if(code===0 || suppressErr){
            resolve()
        }else{
            reject()
        }
    });
})