How to make ruby gems available to all users? - ruby

Question

I installed a Ruby gem running this command from root:
gem install pushmeup
The gem works well when executing scripts from root. When I try to execute a script from non-root user, I see this error about such gem not found:
/usr/local/rvm/rubies/ruby-1.9.3-p551/lib/ruby/site_ruby/1.9.1/rubygems/core_ext/kernel_require.rb:54:in `require': cannot load such file -- pushmeup (LoadError)
from /usr/local/rvm/rubies/ruby-1.9.3-p551/lib/ruby/site_ruby/1.9.1/rubygems/core_ext/kernel_require.rb:54:in `require'
from pushAPNS.rb:2:in `<main>'

Answer 1

Edit:
RVM gives you compartmentalized independent ruby setups. This means
that ruby, gems and irb are all separate and self-contained - from the
system, and from each other.
https://rvm.io/gemsets/basics
============
Never use sudo with rvm.
Type rvm gemset list
Type rvm gemset use global
Type gem install some_gem
The gems in the global gemset will be available in all other gemsets. If you want to create a gemset for a specific project, then do:
rvm gemset create proj1_gems
rvm gemset list
rvm gemset use proj1_gems
To delete a gemset:
rvm gemset delete proj1_gems
rvm gemset list
Each version of ruby has its own gemsets. You can switch to a specific ruby version and one of the gemsets for that version with one command like this:
rvm use 2.0.0#proj1_gems
But generally, I do:
rvm use 2.0.0
rvm gemset list
rvm gemset use some_gemset_name_in_the_list