yum is an automatic updater and package installer/remover for
rpm systems. It automatically computes dependencies and figures out
what things should occur to install packages.
Home Page: http://linux.duke.edu/projects/yum/
How It Works: http://linux.duke.edu/projects/yum/howitworks.ptml
NOTE: Always make sure you update yum itself before you
update the rest of the rpms!
Command:
| yum update yum |
Then run:
| yum update |