RVM

RVM

RVM is strongly recommended. The briefest RVM installation is (from the bash command line):

  bash < <( curl http://rvm.beginrescueend.com/releases/rvm-install-head )

Then edit your ~/.bashrc file in accordance with the RVM Post Install instructions.

Post-installation

Briefly, in your ~/.bashrc, replace

[ -z "$PS1" ] && return

with

if [[ -n "$PS1" ]]; then

Then at the bottom of the file, add:

fi
[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm"  # This loads RVM into a shell session.

Exit your current shell and start a new one before continuing.

Install desired rubies

Dubsar has been tested with MRI 1.9.2 and REE 1.8.7. Both are easily installed using RVM. (All the following commands are issued at the bash command line.)

  rvm install ree-1.8.7
  rvm install 1.9.2

But see the following section for notes on installing MRI.

Install RVM packages and MRI 1.9.2

Usually in an Ubuntu installation, MRI requires the following steps:

  rvm package install openssl
  rvm package install readline
  rvm install 1.9.2 --with-readline-dir=~/.rvm/usr --with-openssl-dir=~/.rvm/usr

Set up RVM

Choose a ruby to use (for the remainder of this shell or until changed manually):

  rvm use ree

Choose a default (and use it now):

  rvm --default 1.9.2

Show installed and current rubies:

jdee@fatman:~$ rvm list

rvm rubies

   ruby-1.9.2-p0 [ x86_64 ]
=> ree-1.8.7-2010.02 [ x86_64 ]
   jruby-1.5.3 [ amd64-java ]
   ruby-1.8.7-p302 [ x86_64 ]