title: Unknown bash scripts running when terminal opens?
body: <p>I am not exactly sure what's happening here - I open a terminal window on my mac and see the following:</p>
  
  <pre><code>Last login: Tue Jun 26 00:36:08 on ttys002
  -bash: : command not found
  -bash: : command not found
  </code></pre>
  
  <p>This seems to me like some file is being executed whenever I open a new terminal window, but I have no idea how I'd find this file.  Is there some list of files that run when terminal opens that I could find easily?  I'd love to know what is happening here (and how it came about in the first place)</p>