text: var shell = require('..');
  
  var assert = require('assert'),
      fs = require('fs');
  
  shell.config.silent = true;
  
  shell.rm('-rf', 'tmp');
  shell.mkdir('tmp');
  
  //
  // Valids
  //
  
  var tmp = shell.tempdir();
  assert.equal(shell.error(), null);
  assert.equal(fs.existsSync(tmp), true);
  
  shell.exit(123);
  