Покажите кто-нибудь, что можно делать на этом языке

sudo apt-get install -y ruby1.9.1 ruby-bundler ruby-dev rake build-essential sqlite3 libsqlite3-dev libssl-dev openssl zlib1g zlib1g-dev zlibc libxslt-dev libxml2-dev git

#!/bin/bash
# A simple Script for installing Rails on Ubuntu 12.04 LTS / 12.10
# It will also install the dependencies required as well as the RVM
# Author: Ramesh Jha (ramesh@rameshjha.com),([url]http://blog.sudobits.com[/url])
# License: MIT 
 
RUBY_VERSION="1.9.3"
LOG_FILE="$HOME/install.log"
 
echo "Rails Installer started"
 
# Installing Dependencies
echo ".......Updating package cache....."
sudo apt-get update >>$LOG_FILE
echo "......Done.........."
 
echo "..........Installing git.........."
sudo apt-get -y install git >>$LOG_FILE
echo "..........Done...................."
 
echo "Installing Curl"
sudo apt-get -y install curl >>$LOG_FILE
echo "...........Done..................."
 
 
# Install RVM (Ruby Version Manager)
echo ".....Installing RVM.............."
curl -L get.rvm.io | bash -s stable >>$LOG_FILE
 
# fallback for the above command (in case of certificates errors)
#if ($? !=0)
# then
#  curl -kL get.rvm.io | bash -s stable
#fi  
 
echo "............DONE.........."
echo "......Loading RVM.........."
source ~/.rvm/scripts/rvm >>$LOG_FILE
echo "...........Done..........."
 
# Install Additional Dependencies
 
sudo apt-get -y install build-essential openssl libreadline6 libreadline6-dev zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison subversion
 
# Install nodejs from the PPA
sudo apt-add-repository -y ppa:chris-lea/node.js
sudo apt-get update
sudo apt-get -y install nodejs
 
# Install Latest version of Ruby
echo "........Installing Ruby v $RUBY_VERSION ..."
rvm install $RUBY_VERSION >>$LOG_FILE
echo "==> Done........."
 
echo "If you want to install another version of ruby e.g 1.8.7"
echo "Then use the command 'rvm install 1.8.7' "
 
# Select and Set latest version of ruby as the default so that
# You won't have to select each time you start a terminal
 
echo ".......Setting the default version of Ruby..."
rvm --default use $RUBY_VERSION >>$LOG_FILE
echo "==> Done........."
 
echo "Now, You are using Ruby $RUBY_VERSION by default"
echo "if you want to change that then use 'rvm --default <ruby_version>' "
 
# Install Latest version of Rails
echo "..........Installing Rails gem................"
gem install rails >>$LOG_FILE
echo ".........Done"
 
echo "######################################"
echo "###### Installation Completed ########"
echo "######################################"
 
echo "if something went wrong then checkout the log file $LOG_FILE"