First, although I already blog few year ago about installing RVM, my blog needs to be updated with latest RVM set-up. The new command lines for the installation of RVM (tested on Ubuntu 13.10):
sudo apt-get install libgdbm-dev libncurses5-dev automake libtool bison libffi-dev
curl -L https://get.rvm.io | bash -s stable
source ~/.rvm/scripts/rvm
echo "source ~/.rvm/scripts/rvm" >> ~/.bashrc
Install ruby and gems
rvm install 2.1.0
rvm use --default 2.1.0
ruby -vnote the path of ruby and the associated gemset
.rvm/gems/ruby-2.1.0@global
This would be useful later on to know which rvm ruby "ruby-2.1.0" and rvm gemset "global" we are using so we can load them automatically every time we access the project directory.
rvm list
rvm rubies
ree-1.8.7-2011.03 [ i686 ]
ruby-1.9.2-p320 [ i686 ]
ruby-1.9.3-p484 [ i686 ]
- ruby-2.0.0-p353 [ i686 ]
=> ruby-2.1.0 [ i686 ]
# => - current
# =* - current && default
# * - defaultthen add rails gems and create new application called "jobsearch"
rvm gemset list echo "gem: --no-ri --no-rdoc" > ~/.gemrc
gem install rails
rails new jobsearch cd jobsearch
bundle
Create the rvmrc file so that your directory switch automatically to the right ruby and gemset
rvm --create --rvmrc ruby-2.1.0@global
$ cd ..
$ cd jobsearch/
You are using '.rvmrc', it requires trusting, it is slower and it is not compatible with other ruby managers,
you can switch to '.ruby-version' using 'rvm rvmrc to [.]ruby-version'
or ignore this warning with 'rvm rvmrc warning ignore /home/user/dev/jobsearch/.rvmrc',
'.rvmrc' will continue to be the default project file in RVM 1 and RVM 2,
to ignore the warning for all files run 'rvm rvmrc warning ignore all.rvmrcs'.
********************************************************************************
********************************************************************************
- NOTICE *
- RVM has encountered a new or modified .rvmrc file in the current directory, *
- this is a shell script and therefore may contain any shell commands. *
- *
- Examine the contents of this file carefully to be sure the contents are *
- safe before trusting it! *
- Do you wish to trust '/home/user/dev/jobsearch/.rvmrc'? *
********************************************************************************
- Choose v[iew] below to view the contents *
y[es], n[o], v[iew], c[ancel]> y
Add this line in the end of .rvmrc to display the selected gem
------------------------------
if $- == *i* # check for interactive shells
then
echo "Using: $(tput setaf 2)$GEM_HOME$(tput sgr0)" # show the user the ruby and gemset they are using in green
else
echo "Using: $GEM_HOME" # don't use colors in interactive shells
fi
------------------------------
$ cd jobsearch/
You are using '.rvmrc', it requires trusting, it is slower and it is not compatible with other ruby managers,
you can switch to '.ruby-version' using 'rvm rvmrc to [.]ruby-version'
or ignore this warning with 'rvm rvmrc warning ignore /home/user/dev/jobsearch/.rvmrc',
'.rvmrc' will continue to be the default project file in RVM 1 and RVM 2,
to ignore the warning for all files run 'rvm rvmrc warning ignore all.rvmrcs'.
*********************************************************************************
* NOTICE *
*********************************************************************************
* RVM has encountered a new or modified .rvmrc file in the current directory, this is a shell script and *
* therefore may contain any shell commands. *
* *
* Examine the contents of this file carefully to be sure the contents are safe before trusting it! *
* Do you wish to trust '/home/user/dev/jobsearch/.rvmrc'? *
* Choose v[iew] below to view the contents *
*********************************************************************************
y[es], n[o], v[iew], c[ancel]> y
Using: /home/user/.rvm/gems/ruby-2.1.0@global
You are now ready to run the basic application:
bundle exec rails s
=> Booting WEBrick=> Rails 4.0.3 application starting in development on http://0.0.0.0:3000=> Run `rails server -h` for more startup options=> Ctrl-C to shutdown server[2014-02-20 00:06:26] INFO WEBrick 1.3.1[2014-02-20 00:06:26] INFO ruby 2.1.0 (2013-12-25) [i686-linux][2014-02-20 00:06:26] INFO WEBrick::HTTPServer#start: pid=17659 port=3000
The Benefit of RVM
RVM is a great tool when you want to test different rubies or if you have several applications on a single server, as you can use any combination of rubies and gemsets all on a single machine without any problem.
