How can I install Ruby 1.9.3 in Mac OS X Lion?

Question

I am trying to install Ruby 1.9.3 but am having problems. I installed RVM, then typed:

rvm install 1.9.3

The output says:

Answer 1

Type following commands

• ~ $: source ~/.rvm/scripts/rvm
• ~ $: type rvm | head -n 1

  rvm is a function

• ~ $: vi ~/.bash_profile add this line into bash_profile "source ~/.rvm/scripts/rvm"

• ~ $: rvm install 1.9.3

• ~ $: rvm use 1.9.3