Step by step
- Check if you have root access
- sudo yum install php-pear (RedHat based)
- pear channel-discover pear.drush.org
- pear install drush/drush
- Check if Console table library is installed 5.1 if yes just use drush on you root path of drupal installtion 5.2 else install Console table: (more info)[https://www.drupal.org/node/2132447#comment-9740457] - sudo requiered - cd /usr/share/pear/drush/lib/ - wget http://download.pear.php.net/package/Console_Table-1.1.3.tgz - tar -zxvf Console_Table-1.1.3.tgz - rm -fr .tgz - run *drush, test and use =)