Install git, ruby, gems, rake, java and rsync on Ubuntu

# install git
sudo apt-get build-dep git-core -y
wget http://kernel.org/pub/software/scm/git/git-1.6.0.6.tar.gz
tar xvzf git-1.6.0.6.tar.gz
cd git-1.6.0.6
cd git-1.6.0.6 && ./configure
cd git-1.6.0.6 && make
cd git-1.6.0.6 && sudo make install
rm git-1.6.0.6.tar.gz
rm -Rf git-1.6.0.6

# install ruby 
sudo apt-get install -y ruby1.8-dev ruby1.8 ri1.8 rdoc1.8 irb1.8 libreadline-ruby1.8 libruby1.8 libopenssl-ruby sqlite3 libsqlite3-ruby1.8
sudo apt-get install -y libmysql-ruby1.8
sudo ln -s /usr/bin/ruby1.8 /usr/bin/ruby
sudo ln -s /usr/bin/ri1.8 /usr/bin/ri
sudo ln -s /usr/bin/rdoc1.8 /usr/bin/rdoc
sudo ln -s /usr/bin/irb1.8 /usr/bin/irb

# install gem
wget http://rubyforge.org/frs/download.php/45905/rubygems-1.3.1.tgz
tar xvzf rubygems-1.3.1.tgz
cd rubygems-1.3.1 && sudo ruby setup.rb
sudo ln -s /usr/bin/gem1.8 /usr/bin/gem
sudo gem update
sudo gem update --system
rm -Rf rubygems-1.3.1*

# install rake
sudo gem install rake

# install plist
sudo gem install plist

# install java
sudo apt-get install openjdk-6-jre

# install rsync
sudo apt-get install rsync