title: Where are these $PATHs coming from?
body: <p>If it matters my setup is Zshell with Prezto on OSX. I have a Heroku path which I don't need. Years ago I remember going through a Heroku tutorial.  I am unsure where it is specified. I'd also like to know if those rvm paths should be at the top. Some of the output from <code>echo $PATH</code> comes from my .zhsrc file. I am unsure where other parts of it originate.</p>
  
  <pre><code>echo "${PATH//:/'\n'}"
  /usr/local/heroku/bin'
  '/Users/joe/.rvm/gems/ruby-2.2.0/bin'
  '/Users/joe/.rvm/gems/ruby-2.2.0@global/bin'
  '/Users/joe/.rvm/rubies/ruby-2.2.0/bin'
  '/usr/local/bin'
  '/usr/bin'
  '/bin'
  '/usr/sbin'
  '/sbin'
  '~/.composer/vendor/bin'
  '/opt/X11/bin'
  '/usr/local/MacGPG2/bin'
  '/usr/local/bin'
  '/usr/local/sbin'
  '/usr/local/bin/node'
  '/Users/joe/Library/wpcs/vendor/squizlabs/php_codesniffer/scripts'
  '~/.composer/vendor/bin'
  '/Users/joe/.rvm/bin
  </code></pre>
  
  <p><code>$ cat /etc/paths</code> returns:</p>
  
  <pre><code>/usr/bin
  /bin
  /usr/sbin
  /sbin
  ~/.composer/vendor/bin
  </code></pre>