title: realpath couldn't resolve "/usr/bin/-perl" on Mac Terminal
body: <p>I'm trying to install Tails on my Mac using this instruction guide (<a href="https://tails.boum.org/doc/first_steps/installation/manual/mac/index.en.html" rel="nofollow">https://tails.boum.org/doc/first_steps/installation/manual/mac/index.en.html</a>) and I've been successful up to step 4, sub-step 6 where it says "To run isohybrid.pl on the ISO image, execute the following command, replacing [tails.iso] with the path to the ISO image that you want to install."</p>
  
  <p>
  Below is my terminal window. I have no idea what a majority of this means and this is actually my first time ever using terminal. I was able to figure out how to check my hidden bin folder through finder and I checked for -perl and I didn't see that file in there. I saw perl, perlbug, perldoc, etc. but no -perl. Also I'm confused as to if this command actually did something because the 'couldn't resolve' message and the '[Process completed]' message seem kind of contradictory. Anyway, if anyone could help me get unstuck, that would be great :) 
  </p>
  
  <p>Here is a screenshot of my terminal window: <a href="http://i.stack.imgur.com/Hmc8c.png" rel="nofollow">http://i.stack.imgur.com/Hmc8c.png</a></p>