Jorge Bucaran Jorge Bucaran - 2 months ago 25
Ruby Question

How to install a gem globally without sudo using rbenv?

I am using

rbenv
and I am trying to install
sass
without success.

So, I installed
rbenv
via Homebrew, then Ruby 2.2 (
rbenv install 2.2
) and finally
gem install sass
, but I was unable to make
sass
available on my
$PATH
.

Short on time, I
sudo gem install sass
using my system's (Yosemite) default Ruby 2. This put everything in
/Library/Ruby/Gems/2.0.0
and things do work, but not in the most desireable way.

Ideally, using
rbenv
I should be able to install any Ruby version and have gems installed inside that version's directory and later symlinked to
/usrl/local/bin
.

Any help as to what could have gone wrong would be very much appreciated.

Answer

Basically, the problem was I did not add rbenv/bin/rbenv to $PATH.

export PATH="$HOME/.rbenv/bin:$PATH"

Better yet, add this to your .bashrc or .bash_profile to start every session with rbenv.

After that, make sure to:

eval "$(rbenv init -)"

In order to enable shims and autocompletion.

fishshell

For those using fish, you can accomplish the same like this:

if status --is-interactive
  . (rbenv init - | psub)
end

Now, if you don't like modifying $PATH directly and have ownership over /usr/local/bin, a more nifty solution is to symlink with ~/.rbenv/bin/rbenv.

 ln -s ~/.rbenv/bin/rbenv /usr/local/bin

ruby-build

As a final warning, make sure to install ruby-build (a rbenv plugin to add the install command to rbenv and be able to easily install Ruby versions.)

If you are using homebrew it's easy as pie:

brew install ruby-build