Ruby command not recognized after installing it with rvm

Question

I followed this tutorial to install ruby with rvm: https://www.digitalocean.com/community/tutorials/how-to-install-ruby-on-rails-on-ubuntu-12-04-lts-precise-pangolin-with-rvm

The problem is that everytime that I log in, the ruby installation is not recognized, for example if I try executing a ruby script with the "ruby" command this is what I get:

To make it be recognized I have to run this command:

source ~/.rvm/scripts/rvm

But every time I login I have to do it again.

Solution 1

You can install Ruby by typing:

sudo apt-get install ruby-full

See the Doc.

Solution 2

What went wrong?

During installation, rvm puts two lines (first one is a comment though) in ~/.bash_profile file to help bash recognize ruby binaries. But the problem is Ubuntu's bash ignores this file. As a result, it doesn't know that you already installed ruby and prompts you to install ruby!

The problem can be solved in two different way.

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Solution 1: Using ~/.bashrc file

Open your ~/.bashrc file and put these two lines (or last one) there.

### Load RVM into a shell session *as a function*
[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"

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Solution 2: Make the regular shell session as login shell

Or you can turn on your virtual terminal's preference to consider the shell as Login Shell. The settings can be found in -

• Gnome Terminal: Menu > Edit > Profile Preference > Command Tab > Run command as a login shell

• Mate Terminal: Menu > Edit > Profile Preference > Title & Command Tab > Run command as a login shell

• Xfce4 Terminal: Menu > Edit > Preference > General Tab > Run command as login shell

Either one will do the job.

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Another solution could be installing Ruby in System using Ubuntu's repository. But that defeats the purpose of using rvm at first place.

Comments

[Bilal]

This article may help you Setup Ruby On Rails on Ubuntu

[Tony Cronin]

This is the answer to the question asked. Why is it not the accepted answer?

[Anwar]

@TonyCronin This is added after 2 years, The OP might not active now. I appreciate your support though. Thanks !