The yumcommand is the primary package management tool for installing, updating, removing, and managing software packages in Red Hat Enterprise Linux. It is an acronym for Yellow Dog Updater, Modified.
yum performs dependency resolution when installing, updating, and removing software packages. It can manage packages from installed repositories in the system or from .rpm packages.
yum -option command
- To see an overview of what happened in past transactions:
yum history
- To undo a previous transaction:
yum history undo <id>
- To install firefox package with 'yes' as a response to all confirmations
yum -y install firefox
- To update the mysql package it to the latest stable version
yum update mysql
| Command | Description |
|---|---|
install |
Installs the specified packages |
remove |
Removes the specified packages |
search |
Searches package metadata for keywords |
info |
Lists the description |
update |
Updates each package to the latest version |
repolist |
Lists repositories |
history |
Displays what has happened in past transactions |
groupinstall |
To install a particular package group |
clean |
To clean all cached files from enabled repository |
| Short Flag | Long Flag | Description |
|---|---|---|
-C |
--cacheonly |
Runs entirely from system cache, doesn’t update the cache and use it even in case it is expired. |
| - | --security |
Includes packages that provide a fix for a security issue. Applicable for the upgrade command. |
-y |
--assumeyes |
Automatically answer yes for all questions. |
| - | --skip-broken |
Resolves depsolve problems by removing packages that are causing problems from the transaction. It is an alias for the strict configuration option with value False. |
-v |
--verbose |
Verbose operation, show debug messages. |