The yum update command is used to update a package. In this example, the latest version of the wget package is already installed on the system, thus the wget package will not be updated.

yum update wget
. . .
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: centos.mirrors.tds.net
 * centos-sclo-rh: mirror.cs.uwp.edu
 * centos-sclo-sclo: mirror.cs.uwp.edu
 * extras: bay.uchicago.edu
 * updates: repos.hou.layerhost.com
No packages marked for update

Following are commonly used yum commands.

• yum search (display information about a package)
• yum info (display information about a package)
• yum list (list installed and available packages)
• yum provides (determine the package that provides a file)
• yumdownloader (download a package)
• yum install (install a package)
• yum update (update a package)
• yum remove or yum erase (uninstall a package)

Alternatively, the Ansible yum module can be used to automate the process of managing packages.