title: Which sources are in use
body: <p>I was wondering: is there some way to find out which sources in the current terminal window (iTerm2 on a Mac) are sourced?</p>
  
  <p>I'm wondering, because I've got like a .profile, .bash_profile, .zshrc etc etc and I want to know which one I should keep up to date.</p>
  
  <p>Cheers!</p>