What is up2date?

[Sean]

It is a Red Hat Update Agent. It installs new softwares and upgrades accordingly. With front-end RPM functions which downloads / installation new softwares / upgration to O.S. / automatic dependancy resolutions. It takes packages from RHN server. It also downloads packages from yum repositories on the CentOS Mirror Network.

[BodShane]

up2date command is used frequently on servers for regular updates of RPM's

However, it is advised that you do not run this command in a virtual environment such as a Virtual Private Server.