old_contents: from shortcuts import make_shortcut, newer
  
  for cmd in ["python", "pip", "ls", "rm", "nosetests"]:
      globals()[cmd] = make_shortcut(cmd)
  
new_contents: from shortcuts import make_shortcut, newer
  
  for cmd in ["python", "pip", "ls", "rm", "nosetests", "mkdir", "rsync"]:
      globals()[cmd] = make_shortcut(cmd)
  
subject: add a few more shortcuts... need to organize these