HowTo: Update Centos Linux 5.4 to 5.5

To update CentOS Linux 5.4 to 5.5, you will need to follow a few steps:

1. Check if your system is up to date. Before you start the update process, it's a good idea to make sure that your system is fully up to date. You can do this by running the following command:

sudo yum update

This will update all installed packages to the latest available versions.

2. Upgrade the kernel. CentOS Linux 5.5 uses a newer kernel than CentOS Linux 5.4. To upgrade to the newer kernel, you will need to install the kernel package. You can do this using the following command:

sudo yum install kernel

This will install the latest kernel version available for CentOS Linux 5.5.

3. Reboot the system. Once the kernel is installed, you will need to reboot the system to boot into the new kernel. To do this, use the reboot command:

sudo reboot

4. Upgrade the system packages. After the system has been rebooted, you can upgrade the rest of the system packages to the versions available in CentOS Linux 5.5. To do this, use the yum command with the --releasever option:

sudo yum --releasever=5.5 update

This will upgrade all installed packages to the versions available in CentOS Linux 5.5.

5. Clean up the system. After the upgrade is complete, you can clean up the system by removing any obsolete packages and cleaning up the package cache. To do this, use the following commands:

sudo yum autoremove
sudo yum clean all