function(command, callback) {
    var exec = require('child_process').exec;

    exec(command, function (err) {
      if (err) puts('exec error: ' + err);
      callback.call(this);
    });
  }
function(command, callback) {
    var exec = require('child_process').exec;

    exec(command, function (err) {
      if (err) puts('exec error: ' + err);
      callback.call(this);
    });
  }
function ( command , callback ) { var exec = require ( 'child_process' ) . exec ; exec ( command , function ( err ) { if ( err ) puts ( 'exec error: ' + err ) ; callback . call ( this ) ; } ) ; }
Private: Run a command on the command line.  command - the {String} command to run callback - a {Function} to call when complete
Private : Run a command on the command line . command - the { String } command to run callback - a { Function } to call when complete