Installing Ruby gems not working with Home Brew

Question

The gems I install via sudo gem install ... can\'t be executed (I get a command not found). They seem to install into /usr/local/Cellar/

Answer 1

Using the info in Timo's answer, I've got this:

PATH=/usr/local/opt/ruby/bin:$PATH
GEMSDIR=$(gem environment gemdir)/bin
PATH=$GEMSDIR:$PATH
export PATH

Works for Homebrew, works for the separate gems directory, and doesn't hardcode a Ruby version.