title: why `tasklist | find "cmd.exe"` doesn't work on win7 but xp and vista?
body: <p>Hi I run <code>tasklist | find "cmd.exe"</code> but has different result on the following OS:</p>
  
  <ul>
  <li>winXP: get the cmd.exe process success</li>
  <li>Vista: get the cmd.exe process success </li>
  <li>win7:  find: cmd.exe: No such file or directory, but <code>tasklist | grep "cmd.exe"</code>  the command <code>grep</code> works for it.</li>
  </ul>
  
  <p>Anyone has idea why win7 use <code>grep</code> instead of <code>find</code>?</p>
  
  <p>Thanks</p>