title: command not found in zsh when it is there
body: <p>I just installed the android SDK and was trying to run the emulator when this happened:</p>
  
  <pre><code>:: ~ » echo $PATH
  /usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/home/neeraj/code/android/android-sdk-linux/tools:/home/neeraj/code/android/android-sdk-linux/platform-tools
  :: ~ » whereis emulator
  emulator: /home/neeraj/code/android/android-sdk-linux/tools/emulator
  :: ~ » emulator
  zsh: command not found: emulator
  </code></pre>
  
  <p><code>emulator</code> seems to be in one of the $PATH directories, but zsh still says that it wasn't found. What could be the cause?</p>