title: Terminal (macOS) stopped working for Ruby commands
body: <p>Something very strange happened to me. I installed RoR, finished guide 'getting started with rails', and started to building website. I installed many gems, created a lot of new apps, and then my console stopped responding. I wanted to get to another app through console, typing </p>
  
  <blockquote>
    <p>$ cd myapp1</p>
  </blockquote>
  
  <p>and nothing happened. I just get to another empty line.
  To be clear - I used this command multiple times before so many others.</p>
  
  <p>Have you dealt with something like that?</p>
  
  <p>UPDATE : i closed and opened terminal few times then restart whole computer and it was still broken. i just let it go and few minutes later it started to working on oO</p>
  
  <p>STILL. Had anyone this issue?</p>