ruby gem install to 1.9.1 instead of 1.8

Question

I ran the following lines in linux

gem install mysql

And it installed the mysql gem to /var/lib/gems/1.8/gems. That's not where I want it. I wnat it at /var/lib/gems/1.9.1/gems. I could just copy the files over to the 1.9.1 gems directory. But is there an option in the gem install mysql command that lets me install the gem to 1.9.1 instead of 1.8?

Answer 1

Normally, the default version of Ruby on Ubuntu 14.04 would be 1.9.1. I don’t know what’s wrong with your system in that regard.

If you want to target a specific Ruby version, simply use the fully qualified name:

gem1.9.1 install mysql

Likewise, you can use ruby1.9.1 to explicitly request the Ruby 1.9.1 interpreter.

Answer 2

FROM gem help examples:

• Install 'rake', but only version 0.3.1, even if dependencies are not met, and into a user-specific directory:

  gem install rake --version 0.3.1 --force --user-install {/var/lib/gems/... in your case)