title: iterm, unable to fork, too many processes?
body: <p><a href="https://i.stack.imgur.com/Du6TS.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Du6TS.png" alt="Unable to fork"></a></p>
  
  <p>I wasn't able to open new iterm window due to the message, the photo above. Even though t definitely looks running too many processes,I think mac wasn't running too many processes. I've checked activity monitor but couldn't find any difference between normal situation.</p>
  
  <p>I solved this with rebooting but wanna know what the exact problem and how to check that. If anybody has any idea, please share it with me.</p>