If you want to update Linux CentOs from version 5.2 or 5.1.6 to 5.5

First we chek what is the versoin of our CentOs installation with this command:

lsb_release -a

This is for our information:

Then we import the public

rpm --import http://www.jasonlitka.com/media/RPM-GPG-KEY-jlitka

The next step is create the repository file:

vi /etc/yum.repos.d/utterramblings.repo

To operta with vi command we  will press i key and the paste this

[utterramblings] name=Jason's Utter Ramblings Repo
baseurl=http://www.jasonlitka.com/media/EL$releasever/$basearch/
enabled=1
gpgcheck=1
gpgkey=http://www.jasonlitka.com/media/RPM-GPG-KEY-jlitka

Once we past this text we press ESC key and put :wq! to save the file.

The next sttep is remove a dependency that will give an error to the update.

yum remove php-sqlite2

 and finally we do the magic commad, that will update all the system:

yum update

And in 5 minuts we will have our system updateD:

We can check the version of the system with this command:

lsb_release -a

And in out scree we have an output like this: 

[root@XXXXXX ~]# lsb_release -a

LSB Version:    :core-3.1-ia32:core-3.1-noarch:graphics-3.1-ia32:graphics-3.1-noarch Distributor  ID: CentOS Description:    CentOS release 5.5 (Final) Release:         5.5 Codename: Final

and thats all!!