Ruby
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Installation on Ubuntu
- https://www.ruby-lang.org/en/documentation/installation/
- apt-get install ruby will install v1.8 or v1.9. v1.8 is kind of old that nokogiri, for example, cannot be installed.
- I tried to install from the source (v2.2.1) on Ubuntu 14.04. The canonical method ./configure, make & sudo make install does not work at 'make' step. # See https://github.com/sstephenson/ruby-build/issues/690. Unfortunately the method of installing libffi-dev does not solve the error on Ubuntu 14.0.
- The next method is ruby-build. Don't quite follow it.
- rbenv method. Not sure if it works since the shell hangs when I run 'rbenv install 2.2.0'.
- rvm (Ruby Version Manager) method. This is the recommended method.
sudo apt-get update sudo apt-get install build-essential make curl \curl -L https://get.rvm.io | bash -s stable source ~/.bash_profile # sudo apt-get install ruby-rvm time rvm install ruby-2.1.4
The last step will take a while (27 minutes in my case) since no binary rubies for my OS/architecture were available and it has to compile Ruby from the source. At the end of installing, it will show
Install of ruby-2.1.4 - #complete Ruby was built without documentation, to build it run: rvm docs generate-ri
Then check ruby versions installed and in use
which rvm # /home/brb/.rvm/bin/rvm ruby -v # ruby 2.1.4p265 (2014-10-27 revision 48166) [x86_64-linux] which gem # /home/brb/.rvm/rubies/ruby-2.1.4/bin/gem rvm list rvm use --default ruby-2.1.4
Documentation
- https://www.ruby-lang.org/en/documentation/
- Ruby in 20 minutes from ruby-lang.org.
Install Gems
# sudo apt-get install rubygems gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3 \curl -L https://get.rvm.io | bash -s stable source ~/.bash_profile time rvm install ruby-2.1.4 rvm list which ruby gem install nokogiri $ gem install nokogiri Building native extensions. This could take a while... Successfully installed nokogiri-1.6.6.2 Parsing documentation for nokogiri-1.6.6.2 Done installing documentation for nokogiri after 2 seconds 1 gem installed $ gem list *** LOCAL GEMS *** bigdecimal (1.2.4) bundler (1.7.4) bundler-unload (1.0.2) executable-hooks (1.3.2) gem-wrappers (1.2.7) io-console (0.4.2) json (1.8.1) mini_portile (0.6.2) minitest (4.7.5) nokogiri (1.6.6.2) psych (2.0.5) rake (10.1.0) rdoc (4.1.0) rubygems-bundler (1.4.4) rvm (1.11.3.9) test-unit (2.1.4.0) $ gem env RubyGems Environment: - RUBYGEMS VERSION: 2.4.2 - RUBY VERSION: 2.1.4 (2014-10-27 patchlevel 265) [x86_64-linux] - INSTALLATION DIRECTORY: /home/mli/.rvm/gems/ruby-2.1.4 - RUBY EXECUTABLE: /home/mli/.rvm/rubies/ruby-2.1.4/bin/ruby - EXECUTABLE DIRECTORY: /home/mli/.rvm/gems/ruby-2.1.4/bin - SPEC CACHE DIRECTORY: /home/mli/.gem/specs - SYSTEM CONFIGURATION DIRECTORY: /etc - RUBYGEMS PLATFORMS: - ruby - x86_64-linux - GEM PATHS: ... # Remove old ruby packages installed from apt-get $ sudo dpkg -l | grep ruby $ sudo apt-get purge ruby1.8*