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node.js

Execute A Unix Command With Node.js

Ever wanted to use JavaScript to execute commands in good ol' Unix?  Now you can.  There's a fuller snippet and a more concise method.

// http://nodejs.org/api.html#_child_processes
var sys = require('sys')
var exec = require('child_process').exec;
var child;

// executes `pwd`
child = exec("pwd", function (error, stdout, stderr) {
  sys.print('stdout: ' + stdout);
  sys.print('stderr: ' + stderr);
  if (error !== null) {
    console.log('exec error: ' + error);
  }
});


// or more concisely
var sys = require('sys')
var exec = require('child_process').exec;
function puts(error, stdout, stderr) { sys.puts(stdout) }
exec("ls -la", puts);
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