Node(18) child_process

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child_process has stdin and stdout for input and output

child_process.exec(command, [options], callback)

execute a command

default options:

var options = { encoding: 'utf8',                timeout: 0,                maxBuffer: 200 * 1024,                killSignal: 'SIGTERM',                setsid: false,                cwd: null,                env: null };

var cp = require( 'child_process');cp.exec( 'ls -l', function( e, stdout, stderr ){if( !e ){console.log( stdout );}});

spawn is more general purpose, it require you to do stdin stdout callback yourself.

simple example to use stdin and stdout to list files and foulders:

//create child process for terminalvar terminal = require('child_process').spawn('bash');//when terminal receive data, print it to consoleterminal.stdout.on('data', function (data) {    console.log('stdout: ' + data);});//when terminal exit, print code to notify userterminal.on('exit', function (code) {        console.log('child process exited with code ' + code);});//write data to terminal through stdinsetTimeout(function() {    console.log('Sending stdin to terminal');    terminal.stdin.write('ls -lah');    terminal.stdin.end();}, 1000);