Ruby: Difference between revisions

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= Installation on Ubuntu =
= Installation on Ubuntu =
* https://www.ruby-lang.org/en/documentation/installation/
* https://www.ruby-lang.org/en/documentation/installation/
* apt-get install ruby will install v1.8 or v1.9.
* 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.
* 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 [https://github.com/sstephenson/ruby-build#readme ruby-build]. Don't quite follow it.
* The next method is [https://github.com/sstephenson/ruby-build#readme ruby-build]. Don't quite follow it.
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* rbenv method. Not sure if it works since the shell hangs when I run 'rbenv install 2.2.0'.
* rbenv method. Not sure if it works since the shell hangs when I run 'rbenv install 2.2.0'.
* [http://rvm.io/ rvm (ruby version manager)] method.  
* [http://rvm.io/ rvm (ruby version manager)] method.  
<pre>
<syntaxhighlight lang='bash'>
sudo apt-get update
sudo apt-get update
sudo apt-get install build-essential make curl
sudo apt-get install build-essential make curl
\curl -L https://get.rvm.io | bash -s stable
\curl -L https://get.rvm.io | bash -s stable
source ~/.bash_profile
source ~/.bash_profile
# sudo apt-get install ruby-rvm
time rvm install ruby-2.1.4
time rvm install ruby-2.1.4
</pre>
</syntaxhighlight>
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  
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  
<pre>
<pre>
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* https://www.ruby-lang.org/en/documentation/
* https://www.ruby-lang.org/en/documentation/
* [https://www.ruby-lang.org/en/documentation/quickstart/ Ruby in 20 minutes] from ruby-lang.org.
* [https://www.ruby-lang.org/en/documentation/quickstart/ Ruby in 20 minutes] from ruby-lang.org.
= Install Gems =
<syntaxhighlight lang='bash'>
# 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
</syntaxhighlight>

Revision as of 16:42, 17 September 2015

Installation on Ubuntu

http://stackoverflow.com/questions/26595620/how-to-install-ruby-2-1-4-on-ubuntu-14-04 mentioned a couple of methods.

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

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