Cheatsheet
File Query
Which package provides a file ?:
yum whatprovides /etc/nagios
What files are provided by a package ?:
repoquery --list nagios
Package
General information about a package:
repoquery -i nginx
Dependencies of a package:
yum deplist nrpe
Repository
List packages provided by one specific repo:
yum list --disablerepo="*" --enablerepo="epel"