How to install Ruby 2 on Ubuntu without RVM

I want to install ruby 2.0 using

sudo apt-get install ruby2.0

But there isn't available package for ruby2.0

I want to install it using apt-get install the same like ruby 1.9.1

Any suggestions?

sudo apt-get -y update
sudo apt-get -y install build-essential zlib1g-dev libssl-dev libreadline6-dev libyaml-dev
cd /tmp
wget http://ftp.ruby-lang.org/pub/ruby/2.0/ruby-2.0.0-p451.tar.gz
tar -xvzf ruby-2.0.0-p451.tar.gz
cd ruby-2.0.0-p451/
./configure --prefix=/usr/local
make
sudo make install

from here https://stackoverflow.com/questions/16222738/how-to-install-ruby-2-0-0-correctly-on-ubuntu-12-04

UPDATE

for ruby 2.1.5

sudo apt-get -y update
sudo apt-get -y install build-essential zlib1g-dev libssl-dev libreadline6-dev libyaml-dev
cd /tmp
wget http://ftp.ruby-lang.org/pub/ruby/2.1/ruby-2.1.5.tar.gz
tar -xvzf ruby-2.1.5.tar.gz
cd ruby-2.1.5/
./configure --prefix=/usr/local
make
sudo make install

if you are still seeing an older ruby check your symlink ls -la /usr/bin/ruby from hector

sudo apt-add-repository ppa:brightbox/ruby-ng-experimental &&
sudo apt-get update &&
sudo apt-get install -y ruby2.0 ruby2.0-dev ruby2.0-doc

Easy to use ^ㅡ^

# Adds Ruby 2.2 to Ubuntu 14.04
sudo apt-add-repository ppa:brightbox/ruby-ng
# Adds Ruby v1.9/2.0/2.1/2.2 to Ubuntu 14.04/15.04
# sudo add-apt-repository ppa:brightbox/ruby-ng-experimental

sudo apt-get update
sudo apt-get install ruby2.2 ruby2.2-dev

# http://stackoverflow.com/a/1892889/2126990
# priority ruby: https://gist.github.com/brodock/7693207
sudo update-alternatives --remove ruby /usr/bin/ruby2.2
sudo update-alternatives --remove irb /usr/bin/irb2.2
sudo update-alternatives --remove gem /usr/bin/gem2.2

sudo update-alternatives \
    --install /usr/bin/ruby ruby /usr/bin/ruby2.2 50 \
    --slave /usr/bin/irb irb /usr/bin/irb2.2 \
    --slave /usr/bin/rake rake /usr/bin/rake2.2 \
    --slave /usr/bin/gem gem /usr/bin/gem2.2 \
    --slave /usr/bin/rdoc rdoc /usr/bin/rdoc2.2 \
    --slave /usr/bin/testrb testrb /usr/bin/testrb2.2 \
    --slave /usr/bin/erb erb /usr/bin/erb2.2 \
    --slave /usr/bin/ri ri /usr/bin/ri2.2

update-alternatives --config ruby
update-alternatives --display ruby

$ irb
irb(main):001:0> RUBY_VERSION
=> "2.2.0"

$ ruby --version
ruby 2.2.0p0 (2014-12-25 revision 49005) [x86_64-linux-gnu]

Since this question was answered I have found a new alternative here:

https://www.brightbox.com/docs/ruby/ubuntu/

In short:

# For ubuntu >= 14.04 install software-properties-common
# instead of python-software-properties
sudo apt-get install python-software-properties
sudo apt-add-repository ppa:brightbox/ruby-ng
sudo apt-get update

sudo apt-get -y install ruby2.2 ruby-switch
sudo ruby-switch --set ruby2.2

I must say that according to my tests this is faster than the alternatives shown here, because the compiling step is skipped.

I particularly like ruby-install, available here: https://github.com/postmodern/ruby-install

It will install ruby (any version), JRuby, etc., and has many other features besides.

The better way to install ruby on ubuntu without RVM is to install it with rbenv in terminal as follows:

$ sudo apt-get update

Install the rbenv and Ruby dependencies with apt-get:

$ sudo apt-get install git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties libffi-dev

Now run these commands as follows:

$ cd
$ git clone https://github.com/rbenv/rbenv.git ~/.rbenv
$ echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
$ echo 'eval "$(rbenv init -)"' >> ~/.bashrc
$ exec $SHELL
$ git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build
$ echo 'export PATH="$HOME/.rbenv/plugins/ruby-build/bin:$PATH"' >> ~/.bashrc
$ exec $SHELL

Time to install ruby:

$ rbenv install 2.3.3

which ever is the latest and stable version

$ rbenv global 2.3.3

To check the version

$ ruby -v

To disable the local documentation, as this process can be lengthy:

$ echo "gem: --no-document" > ~/.gemrc

Install the bundler gem, to manage your application dependencies:

$ gem install bundler