yum(8) yum(8)

name

yum - Yellowdog Updater Modified

SYNOPSIS

yum [options] [command] [package ...]

DESCRIPTION

yum is an interactive, automated update program which can be used for

maintaining systems using rpm

command is one of:

* install package1 [package2] [...]

* update [package1] [package2] [...]

* check-update

* upgrade [package1] [package2] [...]

* remove | erase package1 [package2] [...]

* list [...]

* info [...]

* provides | whatprovides feature1 [feature2] [...]

* makecache

* groupinstall group1 [group2] [...]

* groupupdate group1 [group2] [...]

* grouplist [hidden]

* groupremove group1 [group2] [...]

* groupinfo group1 [...]

* search string1 [string2] [...]

* shell [filename]

* resolvedep dep1 [dep2] [...]

* localinstall rpmfile1 [rpmfile2] [...]

* localupdate rpmfile1 [rpmfile2] [...]

* deplist package1 [package2] [...]

Unless the --help or -h option is given, one of the above commands

must be present.

install

Is used to install the latest version of a package or group of

packages while ensuring that all dependencies are satisfied.

If no package matches the given package name(s), they are

assumed to be a shell glob and any matches are then installed.

update

If run without any packages, update will update every currently

installed package. If one or more packages are specified, Yum

will only update the listed packages. While updating packages,

yum will ensure that all dependencies are satisfied. If no

package matches the given package name(s), they are assumed to

be a shell glob and any matches are then installed.

If the --obsoletes flag is present yum will include package

obsoletes in its calculations - this makes it better for dis-

tro-version changes, for example: upgrading from somelinux 8.0

to somelinux 9.

check-update

Implemented so you could know if your machine had any updates

that needed to be applied without running it interactively.

Returns exit value of 100 if there are packages available for

an update. Also returns a list of the pkgs to be updated in

list format. Returns 0 and no packages are available for update.

upgrade

Is the same as the update command with the --obsoletes flag

set. See update for more details.

remove or erase

Are used to remove the specified packages from the system as

well as removing any packages which depend on the package being

removed.

list

Is used to list various information about available packages;

more complete details are available in the List Options section

below.

provides or whatprovides

Is used to find out which package provides some feature or

file. Just use a specific name or a file-glob-syntax wildcards

to list the packages available or installed that provide that

feature or file.

search Is used to find any packages matching a string in the descrip-

tion, summary, packager and package name fields of an rpm. Use-

ful for finding a package you do not know by name but know by

some word related to it.

info

Is used to list a description and summary information about

available packages; takes the same arguments as in the List

Options section below.

clean

Is used to clean up various things which accumulate in the yum

cache directory over time. More complete details can be found

in the Clean Options section below.

shell

Is used to enter the 'yum shell', when a filename is specified

the contents of that file is executed in yum shell mode. Se

yum-shell(8) for more info

resolvedep

Is used to list packages providing the specified dependencies,

at most one package is listed per dependency.

localinstall

Is used to install a set of local rpm files. If required the

enabled repositories will be used to resolve dependencies.

localupdate

Is used to update the system by specifying local rpm files.

Only the specified rpm files of which an older version is

already installed will be installed, the remaining specified

packages will be ignored. If required the enabled repositories

will be used to resolve dependencies.

deplist

Produces a list of all dependencies and what packages provide

those dependencies for the given packages.

GENERAL OPTIONS

Most command line options can be set using the configuration file as

well and the descriptions indicate the necessary configuration option

to set.

-h,, --help

Help; display a help message and then quit.

-y Assume yes; assume that the answer to any question which would

be asked is yes.

Configuration Option: assume-yes

-c [config file]

Specifies the config file location - can take http, ftp urls

and local file paths.

-d [number]

Sets the debugging level to [number] - turns up or down the

amount of things that are printed. Practical range: 0 - 10

Configuration Option: debuglevel

-e [number]

Sets the error level to [number] Practical range 0 - 10. 0

means print only critical errors about which you must be told.

1 means print all errors, even ones that are not overly impor-

tant. 1+ means print more errors (if any) -e 0 is good for cron

jobs.

Configuration Option: errorlevel

-r [time in minutes]

Sets the maximum amount of time yum will wait before performing

a command - it randomizes over the time.

-c Tells yum to run entirely from cache - does not download or

update any headers unless it has to to perform the requested

action.

--version

Reports the yum version number and exits.

--installroot=root

Specifies an alternative installroot, relative to which all

packages will be installed.

Configuration Option: iinssttallllroooott

--enablerepo=repoidglob

Enables specific repositories by id or glob that have been dis-

abled in the configuration file using the enabled=0 option.

Configuration Option: enabled

--disablerepo=repoidglob

Disables specific repositories by id or glob.

Configuration Option: enabled

--obsoletes

This option only has afect for an update, it enables yum´s

obsoletes processing logic. For more information se the uppddatte

command above.

Configuration Option: obsoletes

--exclude=package

Exclude a specific package by name or glob from updates on all

repositories.

Configuration Option: exclude

--noplugins

Run with all plugins disabled.

Configuration Option: plugins

LIST OPTIONS

The following are the ways which you can invoke yum in list mode.

Note that all list commands include information on the version of the

package.

yum list [all | regexp1] [regexp 22] [......]

List all available and installed packages.

yum listavailable [regexp1] [......]

List all packages in the yum repositories available to be installed.

yumlistupdates [regexp1] [......]

List all packages with updates available in the yum repositories.

yum listinstalled [regexp1] [......]

List the packages specified by args. If an argument does not

match the name of an available package, it is assumed to be a

shell-style glob and any matches are printed.

yum listextras [regexp1] [......]

List the packages installed on the system that are not avail-

able in any yum repository listed in the config file.

yum listobsoletes [regexp1] [......]

List the packages installed on the system that are obsoleted by

packages in any yum repository listed in the config file.

yum listrecent

List packages recently added into the repositories.

Specifying package names

All the list options mentioned above take file-glob-syntax

wildcards or package names as arguments, for example yum list

available foo* will list all available packages that match

foo*.

Clean Options

The following are the ways which you can invoke yum in clean mode.

yum clean packages

Eliminate any cached packages from the system. Note that pack-

ages are not automatically deleted after they are downloaded.

yum clean headers

Eliminate all of the files which yum uses to determine the

remote availability of packages. Using this option will force

yum to download all the headers the next time it is run.

yum clean all

Runs yum clean packages and yum clean headers as above.

MISC

Specifying Package Names

A package can be referred to for install, update, list, remove, etc

with any of the following:

name

name.arch

name-ver

name-ver-rell

name-ver-rell..arch

name-epoch:ver-rell..arch

eppooch:name-ver-rell..arch

For example: yum remove kernell-22.44.1-100..i686

PLUGINS

Yum can be extended through the use of plugins. A plugin is a Python

".py" file which is installed in one of the directories specified by

the pplluGiinppatth option in yum.conf. For a plugin to work, the following

conditions must be met:

1. The plugin module file must be installed in the plugin path as just

described.

2. The global pplluGiinss option in /etc/yum.conf must be set to '1'.

3. A configuration file for the plugin must exist in /etc/yum/plugin-

conf.d/<pluginname>.conf and the enablledd setting in this file must

set to '1'. The minimal content for such a configuration file is:

[main]

enabled = 1

Se the yum..coonf((55)) man page for more information on plugin related

configuration options.

FILES

/etc/yum.conf

/etc/yum/repos.d/

/etc/yum/pluginconf.d/

/var/cache/yum/