gcc

a, LAMP install
    1  yum install  httpd mysql-server php php-mysql
    2  service httpd start
    3  locate iptables
    4  yum install mlocate
    5  locate iptables
    6  updatedb
    7  locate iptables
    8  vim /etc/sysconfig/iptables
    9  service httpd restart
   10  service iptables restart
   11  ifconfig
   12  service mysqld start
   13  /usr/bin/mysqladmin -u root password 'yourpw'
   14  mysql -u root -p
   15  mysql -u root -p
   19  chkconfig httpd on
   20  chkconfig mysqld on
   21  cd /var/www/html/

b, Install development tools
 yum groupinstall "Development tools"
 yum install zlib-devel bzip2-devel openssl-devel  ncurses-devel
 yum install expat-devel gdbm-devel readline-devel sqlite-devel                              

c, Install python
yum install python-setuptools

d, install Ruby and Ruby on Rails
Download Ruby:
wget http://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p327.tar.gz
cd ../ruby-1.9.3-p327
sudo ./configure
sudo make
sudo make install

 wget http://production.cf.rubygems.org/rubygems/rubygems-1.8.24.tgz
 tar zxvf rubygems-1.8.24.tgz
 cd rubygems-1.8.24
 sudo /usr/local/bin/ruby setup.rb
 gem -v

 sudo /usr/local/bin/gem install rdoc
 sudo /usr/local/bin/gem install rails