title: Perforce CLI hangs indefinitely
body: <p>Surprizing little documentation on setting this up, so I'm sure this is a setup problem.</p>
  
  <p>Steps to reproduce:
  Open terminal (p4.exe in PATH)
  type p4 [RET]</p>
  
  <p>Hangs indefinitely.  When I issue commands from emacs (ie p4 edit [file] it eventually comes back with </p>
  
  <pre><code>Perforce client error:
   Connect to server failed; check $P4PORT.
   TCP connect to perforce failed.
   perforce: host unknown.
  </code></pre>