title: Two 'Homebrew' on my mac; one in opt and one in local. How do I delete one?
body: <p>I bought a new Mac Studio to replace my old (2013) Mac Pro.  I used Homebrew for programming for school; I'm over 75 but I'm going to school (ece) for fun.  Thinking it would be a good idea to install a Homebrew for the Apple chipset, I installed Homebrew.  But instead of overwriting my old version, it installed a new version in /opt .  The old was in /usr/local/bin .  How do I delete the old install?  Somehow I think having two 'brew's is not a god idea.</p>
  <p>I've tried nothing so far.  I don't think rmdir -pv on /usr/local/bin/brew would be sufficient.  Especially as I don't know where Homebrew store everything and I might end up deleting something I need and don't know I need it.</p>