How to install drush with composer on linux box

I had trouble installing Drush on my newly created Centos box. Therefore, I have documented my steps.

First, you need install Composer ( PHP Dependency Manager) cd into the
$ cd /tmp

Download Composer.phar here

$ curl -sS | php

Then move it to /usr/local/bin so that it can be used globaly.
$ mv composer.phar /usr/local/bin/composer

Now type $composer

If you done everything right you should get something that look like this:

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