Question

I have ruby 1.8.7 and 1.9.3 installed by rvm. For each ruby version, I’d like to:

• use gem 1.3.7 for ruby 1.8.7
• use gem 1.8.x for ruby 1.9.3

How can I set the above in rvm?

Answer 1

When install rvm and then rvm install ruby –version its taken latest rubygems version. So just follow the below steps:

1. rvm use 1.8.7
2. gem -v, e.g. shows 1.8.24 like that
   If you want to use rubygems particular version only follow steps #3 and #4.
   This is for syntax set the rubygems in rvm

3. rvm rubygems [x.y.z|latest-x.y|latest|remove]
   Ex like this:
   Retrieving rubygems-1.3.7

   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                            Dload  Upload   Total   Spent    Left  Speed
   100  284k  100  284k    0     0  94166      0  0:00:03  0:00:03 --:--:--  125k
   Extracting rubygems-1.3.7 ...
   Removing old Rubygems files...
   Installing rubygems-1.3.7 for ruby-1.8.7-p371 ...
   Installation of rubygems completed successfully.
   

   then

4. gem -v => It shows 1.3.7

5. rvm rubygems 1.3.7

And If you want use any other version go to step #3

Ex: rvm rubygems latest