title: cd can't find anything in MacOS shell script
body: <p>The script (edited down):</p>
  
  <pre><code>#!/bin/bash
  echo Pausify
  cd /Users/Ken
  echo Pausify finished
  </code></pre>
  
  <p>The result:</p>
  
  <pre><code>kens-mbp:TerraTouchNate Ken$ tools/pausify.sh tablet.gcode tab3.gcode
  Pausify
  : No such file or directoryd: /Users/Ken
  Pausify finished
  kens-mbp:TerraTouchNate Ken$ pwd
  /Users/Ken/Dropbox/TerraTouchNate
  </code></pre>
  
  <p>So how can cd be saying there's no /Users/Ken?  I've tried with 
  /bin/sh and /bin/bash, and with other very real directories, selfsame result.  Is there some deep magic here?</p>