Ruby 2.0 on Ubuntu 14.04 (Messy notes)

Ruby 2.0 on Ubuntu 14.04 (Messy notes)

#
# Ruby2.0 on Ubuntu 14.04
# COPY-PASTE OF NOTES
#
# As seen on
# https://github.com/brightbox/deb-ruby2.0/issues/1
#
# <dcht00
# September 2014
#
# /HOME = /~
#

################# I've used other people's stuff
################# might or might not be properly linked
################# or properly working
################# but these notes eventually got the job done. Here goes

INSTALL RUBY2.0 ON UBUNTU 14.04
	Problematic, ver 1.9 is default
	(14.04 is LTS, so this bs will stay for a while)

more on this:
	https://bugs.launchpad.net/ubuntu/+source/ruby2.0/+bug/1310292
	https://bugs.launchpad.net/ubuntu/+source/ruby-defaults/+bug/1315143

-------------------

I USED THIS BUT NOT SURE IF IT WORKED COMPLETELY / I THINK BECAUSE OF MY SPECIFIC ENV ?

"""
#!/bin/bash

cowsay "one"
git clone git://github.com/sstephenson/rbenv.git .rbenv
echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
echo 'eval "$(rbenv init -)"' >> ~/.bashrc
exec $SHELL

cowsay "two"
git clone git://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build
echo 'export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.bashrc
exec $SHELL

cowsay "three"
rbenv install 2.1.2
rbenv global 2.1.2
ruby -v

####
#### <dcht00
#### I disabled this because I like local docs
####

#The last step is to tell Rubygems not to install the documentation for each package locally
#echo "gem: --no-ri --no-rdoc" > ~/.gemrc
"""

------------------

via
	https://gorails.com/setup/ubuntu/14.04
	http://askubuntu.com/questions/368572/how-to-install-ruby
Installed ruby-2.1.2 to /HOME/.rbenv/versions/2.1.2

$ apt-get install ruby2.0 ruby2.0-dev
### Not sure what this contributes next to the rbenv one...

"""
x@y:/HOME/.rbenv/versions/2.1.2$ ruby --version
ruby 1.9.3p484 (2013-11-22 revision 43786) [x86_64-linux]
x@y:/HOME/.rbenv/versions/2.1.2$ ruby2.0 --version
ruby 2.0.0p384 (2014-01-12) [x86_64-linux-gnu]
"""

#
#
# LINK IT BY DEFAULT
#
#

'update-alternatives' didn't work

So do it by hand !!!!!!!!!!!!!!!!

cd /usr/bin
sudo mv ruby ruby_old
sudo ln -s ruby2.0 ruby
sudo mv gem gem_old
sudo ln -s gem2.0 gem

this is a good overview:
	http://stackoverflow.com/questions/23493984/how-to-install-ruby-2-and-ruby-gems-on-ubuntu-box-with-ansible


####################

Where does ruby lead now?

x@y:/usr/bin$ which -a ruby
/HOME/.rbenv/shims/ruby
/usr/bin/ruby

x@y:/usr/bin$ ll /usr/bin/ruby
lrwxrwxrwx 1 root root 7 Sep  9 15:19 /usr/bin/ruby -> ruby2.0*

Thanks for the notes! Interesting method