yum¶

"yum - Yellowdog Updater Modified" - man yum

"yum is an interactive, rpm based, package manager." - man yum

Examples¶

Show a list of enabled repositories¶

yum repolist

Show a list of available repositories¶

yum repolist all

Show all installed packages, their versions and their source repo¶

yum list installed

List available packages and the repo they come from¶

yum list available | grep jre

Show all duplicates in a search¶

This is a good way to get a complete list of packages that are available that match a certain string

yum --showduplicates search thrift

Query available packages in a given repository¶

yum --disablerepo="*" --enablerepo="epel" list available

Upgrade and skip broken dependencies¶

yum upgrade -y --skip-broken

Upgrade and skip certain packages¶

yum upgrade --exclude=*rabbitmq*

Check for package conflicts¶

install yum-utils, then run package-cleanup

Find a package that includes a specific command or file¶

yum whatprovides "*/filename"

Check for groups of packages¶

yum grouplist

Enable optional installs in groups¶

Add group_package_types=mandatory,default,optional in /etc/yum.conf

Download but do not install packages for update¶

yum upgrade --downloadonly --skip-broken

Install a local file using yum¶

yum localinstall whatever.rpm

Auto-updates for Centos5¶

yum install yum-updatesd

Auto-updates for Centos6¶

yum install yum-cron

See Also¶

• rpm - interact with rpms directly
• https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/sec-Managing_Yum_Repositories.html