Yum
From DWIKI
Cheatsheet
Show installed packages
yum list installed
What provides a certain file
yum whatprovides
Check updates
yum check-update -q
Check security updates
HAHA GOTCHA! no security metadata on CentOS! There is for EPEL though. see https://access.redhat.com/solutions/10021 On CentOS 6 first install
yum install yum-plugin-security
yum list-security -q --errorlevel=0
