rpm -e --nodeps `rpm -q --whatprovides mysql-server`
rpm -qa
rpm -ql [packageName]
Yum operates on and manages RPMs
yum install yum-utils
Then you can run
yum-config-manager
e.g
sudo yum-config-manager --add-repo http://download.opensuse.org/repositories/home:/fengshuo:/zeromq/CentOS_CentOS-6/home:fengshuo:zeromq.repo
yum install http://sphinxsearch.com/files/sphinx-2.2.11-1.rhel7.x86_64.rpm
yum check-update
yum -y update
yum downgrade $(rpm -qa --qf "%{NAME}\n" | grep ^php | awk '{print $1"-5.4.32"}') -y
yum remove packagename
yum erase packagemname
yum list packagename
yum list tsc\*
yum info packagename
yum history list
history info [transactionNo]
yum history undo [transactionNo]
yum history redo [transactionNo]
yum whatprovides '*bin/dig'
yum list installed
yum search packagname
yum provides php
$ yum history list
$ yum info _package_name_
repoquery --list packagename
e.g repoquery -l time
yum --enablerepo remi,remi-php70 install php-zip
yum install npm --enablerepo=epel