yum is an interactive package manager based on rpm packages.

Configuration Files

/etc/yum.conf
/etc/yum/repos.d/*.repo

Repository Options

Option	Description
repositoryid	Unique repository name.
name	Repository name.
baseurl	Repository path directory.
enabled	Use the repository or not.
gpgcheck	Perform a GPG signature check or not.
gpgkey	A url pointing to the repository gpg key.
enablegroups	Whether package groups are allowed.
failovermethod	Random by default.
cost	The cost of accessing the repository, which defaults to 1000.

Variables

Variable	Description
$releasever	Package release version.
$arch	System architecture.
$basesearch	System’s base architecture.
$uuid	unique and persistent uuid.
$YUM0-$YUM9	Shell environment variable name.

Example

[repositoryid] name=Repository name baseurl=url:repository url enabled=1 or 0 gpgkey=url gpgcheck=1 or 0 enablegroups=1 or 0 failovermethod=roundrobin or priority, default is roundrobin cost=1000 by default

Usage

                    
                          1

                          yum [option] [command] [package ...]

Options

Option	Description
-y or ‑‑assumeyes	Suppose all the answers are yes.
-q or ‑‑quiet	Run but do not output messages.
-v or ‑‑verbose	Run and show debug information.
‑‑enablerepo=repoidglob	Enable disabled repository with id or glob.
‑‑disablerepo=repoidglob	Disable enabled repository with id or glob.
‑‑noplugins	Run and disable all plug-ins.

Commands

Command	Description
install	Install a package or a set of packages.
update	Upgrade the specified package to the latest version, and upgrade all packages without specifying a package.
check-update	Show packages that need to be updated.
remove or erase	Delete or erase packages.
list	Show available packages.
provides or whatprovides	Find packages that provide corresponding functionality.
search	Find packages by summary, name, description, and address.
info	Show the description and summary information of the available packages.
clean	Clean the yum cache directory.
makecache	Use to download and make available all metadata for the currently enabled yum repos.
groupinstall	Install all packages in a group.
groupupdate	Install or update all packages in a group.
grouplist	Lists the available groups for all yum repositories.
groupremove	Delete all packages in a group.
groupinfo	Lists the description of all the packages in a group.
localinstall	Install a set of local rpm files.
localupdate	Upgrade the system by specifying local rpm files.
reinstall	Reinstall the same version package.
downgrade	Downgrade the package from the current version to the previous highest version.
deplist	Generate a list of all dependencies and which packages provide them for a given package.
repolist	Generate a list of configuration repositories. List all enabled repositories by default.
history	yum operation histories.

References yum, yum.conf(5)

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81. Package Management - yum (Yellowdog Updater Modified)

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