cmd-exec

Installation:

To install, go to your console/terminal and run:

npm install cmd-exec

Usage:

In your project, require the package:

var cmd = require("cmd-exec").init();

This will return a new instance of the cmd-exec module.

To use multiple instances of cmd-exec:

var cmd1, cmd2;
 
cmd1 = require("cmd-exec").init();
// is not the same as...
cmd2 = require("cmd-exec").init();

To execute a command, use:

cmd.exec("pwd");

The cmd object returns a promise object:

cmd
  .exec("pwd")
  .then(function(res){
    console.log(res.message);
  })
  .fail(function(err){
    console.log(err.message);
  })
  .done(function(){
    console.log("Done!");
  });

It also triggers a callback, once the command has been executed:

cmd.exec("pwd", function(err, res){
  if (err) {
   console.log(err.message);
  } else {
    console.log(res.message);
  }
});

Both promises and callbacks are included so that you can implement whichever one best suits your project's code-style.

Returned objects:

The res object contains two properties:

• res.messages is the stdout from the command
• res.exitCode is the exit code from the command (if specified)

The err object contains a standard Javascript error:

• err.messages is the error's message