Homebrew install fails while copying files

Question

I run this:

/usr/bin/ruby -e \"$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)\"

I get prompt:

Answer 1

You are getting permission denied when downloading the files into /usr/local.

This folder often belongs to root. This is a known issue with brew. Fix it by doing

sudo chown -R $(whoami) $(brew --prefix)/*

and then re-run the installer.