How to use yum command on CentOS/RHEL

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How to register my RHEL based system with RHN

How do I use the yum command to update and patch my Red hat Enterprise Linux / CentOS Linux version 5.x/6.x/7.x server via RHN or the Internet? Can I use up2date command under a RHEL v5.x? up2date command was part of RHEL v4.x or older version. You need to use yum command to update and patch the system using RHN or Internet. Useto install critical and non-critical security updates as well as binary packages.Login as the root user to install and update the system.

To register your RHEL 5.x system with RHN type the following command and just follow on screen instructions (CentOS user skip to the next step):

# rhn_register

To register your RHEL 7.x system with RHN type the folllwong

# subscription-manager register --username tom --password jerry --auto-attach

WARNING! These examples only works with RHEL / CentOS Linux version 5.x or above . For RHEL 4.x and older version use These examples only works with. For RHEL 4.x and older version use up2date command

How to display a list of updated software and security fix

Type the following command at shell prompt:

# yum list updates

Sample outputs:

Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: ftp.iitm.ac.in * epel: repo.ugm.ac.id * extras: ftp.iitm.ac.in * updates: ftp.iitm.ac.in Updated Packages apr.x86_64 1.3.9- 5 .el6_9.1 updates device-mapper.x86_64 1.02.117- 12 .el6_9.1 updates device-mapper-libs.x86_64 1.02.117- 12 .el6_9.1 updates kernel-devel.x86_64 2.6.32-696.16.1.el6 updates kernel-headers.x86_64 2.6.32-696.16.1.el6 updates libblkid.x86_64 2.17.2- 12.28 .el6_9.1 updates libuuid.x86_64 2.17.2- 12.28 .el6_9.1 updates util-linux-ng.x86_64 2.17.2- 12.28 .el6_9.1 updates Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: ftp.iitm.ac.in * epel: repo.ugm.ac.id * extras: ftp.iitm.ac.in * updates: ftp.iitm.ac.in Updated Packages apr.x86_64 1.3.9-5.el6_9.1 updates device-mapper.x86_64 1.02.117-12.el6_9.1 updates device-mapper-libs.x86_64 1.02.117-12.el6_9.1 updates kernel-devel.x86_64 2.6.32-696.16.1.el6 updates kernel-headers.x86_64 2.6.32-696.16.1.el6 updates libblkid.x86_64 2.17.2-12.28.el6_9.1 updates libuuid.x86_64 2.17.2-12.28.el6_9.1 updates util-linux-ng.x86_64 2.17.2-12.28.el6_9.1 updates

How to find out whether updates exist for packages that are already installed on my system

# yum check-update

Patch up system by applying all updates

To download and install all updates type the following command:

# yum update

Sample outputs:



$ sudo yum update --security

To update specified packages

You can only apply security-related package updates using the following syntax:

Updates the specified package. The syntax is

$ yum update {package-name-1}

To check for and update httpd package, enter:

$ sudo yum update httpd

You can update one packages to a particular version say nginx using the following syntax:

$ ## first find a list of all dups ##

$ yum --showduplicates list nginx

$ ## now update to particular version ##

$ sudo yum update-to nginx-version

$ sudo yum update-to nginx-1.12.2-1.el7

List all installed packages

To list all installed packages, enter:

$ rpm -qa ## not recommend just use yum ##

$ yum list installed

Sample outputs:

Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: ftp.iitm.ac.in * epel: mirror1.ku.ac.th * extras: ftp.iitm.ac.in * updates: ftp.iitm.ac.in Installed Packages GeoIP.x86_64 1.5.0- 11 .el7 @base OpenEXR-libs.x86_64 1.7.1- 7 .el7 @base SDL.x86_64 1.2.15- 14 .el7 @base ShellCheck.x86_64 0.3.5- 1 .el7 @epel acl.x86_64 2.2.51- 12 .el7 @base alsa-lib.x86_64 1.1.3- 3 .el7 @base apr.x86_64 1.4.8- 3 .el7_4.1 @updates apr-util.x86_64 1.5.2- 6 .el7 @base atk.x86_64 2.22.0- 3 .el7 @base atk-devel.x86_64 2.22.0- 3 .el7 @base atlas.x86_64 3.10.1- 12 .el7 @base audit-libs.x86_64 2.7.6- 3 .el7 @base autoconf.noarch 2.69 - 11 .el7 @base autogen-libopts.x86_64 5.18 - 5 .el7 @base .... .. ... yum-plugin-fastestmirror.noarch 1.1.31- 42 .el7 @base zip.x86_64 3.0 - 11 .el7 @base zlib.x86_64 1.2.7- 17 .el7 @base zlib-devel.x86_64 1.2.7- 17 .el7 @base Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: ftp.iitm.ac.in * epel: mirror1.ku.ac.th * extras: ftp.iitm.ac.in * updates: ftp.iitm.ac.in Installed Packages GeoIP.x86_64 1.5.0-11.el7 @base OpenEXR-libs.x86_64 1.7.1-7.el7 @base SDL.x86_64 1.2.15-14.el7 @base ShellCheck.x86_64 0.3.5-1.el7 @epel acl.x86_64 2.2.51-12.el7 @base alsa-lib.x86_64 1.1.3-3.el7 @base apr.x86_64 1.4.8-3.el7_4.1 @updates apr-util.x86_64 1.5.2-6.el7 @base atk.x86_64 2.22.0-3.el7 @base atk-devel.x86_64 2.22.0-3.el7 @base atlas.x86_64 3.10.1-12.el7 @base audit-libs.x86_64 2.7.6-3.el7 @base autoconf.noarch 2.69-11.el7 @base autogen-libopts.x86_64 5.18-5.el7 @base .... .. ... yum-plugin-fastestmirror.noarch 1.1.31-42.el7 @base zip.x86_64 3.0-11.el7 @base zlib.x86_64 1.2.7-17.el7 @base zlib-devel.x86_64 1.2.7-17.el7 @base

Find out if httpd package installed or not on the system

$ rpm -qa | grep httpd*

$ yum list installed httpd

Sample outputs:

Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: centos.excellmedia.net * epel: repo.ugm.ac.id * extras: centos.excellmedia.net * updates: centos.excellmedia.net Installed Packages httpd.x86_64 2.4.6- 67 .el7.centos.6 @updates Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: centos.excellmedia.net * epel: repo.ugm.ac.id * extras: centos.excellmedia.net * updates: centos.excellmedia.net Installed Packages httpd.x86_64 2.4.6-67.el7.centos.6 @updates

Lists all packages that are available to install all packages that are installed on system

$ yum list

$ yum list

$ yum list | more ## [ Use more command to show info one screen at a time ] ##

$ yum list | grep bash ## [ Use grep command to filter out results ] ##

Lists all packages that are available for installation

$ yum list available

$ yum list available | more

$ yum list available | grep nginx

How to search for packages by name

You can search the package descriptions for the specified string using search command. The list command can be used too. To search httpd and all matching perl packages, enter:

$ yum list {package-name}

$ yum list {regex}

$ yum list httpd

$ yum list perl*

$ yum search {package-name}

$ yum search nginx

$ yum search nginx*



Sample output from yum list perl* :

Loading "installonlyn" plugin Loading "security" plugin Setting up repositories Reading repository metadata in from local files Installed Packages perl.i386 4 :5.8.8- 10 .el5_0.2 installed perl-Archive-Tar.noarch 1.30 - 1 .fc6 installed perl-BSD-Resource.i386 1.28 - 1 .fc6.1 installed perl-Compress-Zlib.i386 1.42 - 1 .fc6 installed perl-DBD-MySQL.i386 3.0007 - 1 .fc6 installed perl-DBI.i386 1.52 - 1 .fc6 installed perl-Digest-HMAC.noarch 1.01 - 15 installed perl-Digest-SHA1.i386 2.11 -1.2.1 installed perl-HTML-Parser.i386 3.55 - 1 .fc6 installed ..... ....... .. perl-libxml-perl.noarch 0.08 -1.2.1 base perl-suidperl.i386 4 :5.8.8- 10 .el5_0.2 updates Loading "installonlyn" plugin Loading "security" plugin Setting up repositories Reading repository metadata in from local files Installed Packages perl.i386 4:5.8.8-10.el5_0.2 installed perl-Archive-Tar.noarch 1.30-1.fc6 installed perl-BSD-Resource.i386 1.28-1.fc6.1 installed perl-Compress-Zlib.i386 1.42-1.fc6 installed perl-DBD-MySQL.i386 3.0007-1.fc6 installed perl-DBI.i386 1.52-1.fc6 installed perl-Digest-HMAC.noarch 1.01-15 installed perl-Digest-SHA1.i386 2.11-1.2.1 installed perl-HTML-Parser.i386 3.55-1.fc6 installed ..... ....... .. perl-libxml-perl.noarch 0.08-1.2.1 base perl-suidperl.i386 4:5.8.8-10.el5_0.2 updates

How to see detailed information about a package

The syntax is:

$ yum info {pkg-1} {pkg-2}

$ yum info htop

$ yum info nginx htop

Sample outputs:



How to show dependencies list for a package

The syntax is:

$ yum deplist {pkg}

## show for htop pkg

$ yum deplist htop

Sample outputs:

Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: centos.excellmedia.net * epel: repo.ugm.ac.id * extras: centos.excellmedia.net * updates: centos.excellmedia.net package: htop.x86_64 2.0.2- 1 .el7 dependency: libc.so.6 ( GLIBC_2.15 ) ( 64bit ) provider: glibc.x86_64 2.17 - 196 .el7_4.2 dependency: libgcc_s.so.1 ( ) ( 64bit ) provider: libgcc.x86_64 4.8.5- 16 .el7_4.1 dependency: libgcc_s.so.1 ( GCC_3.0 ) ( 64bit ) provider: libgcc.x86_64 4.8.5- 16 .el7_4.1 dependency: libgcc_s.so.1 ( GCC_3.3.1 ) ( 64bit ) provider: libgcc.x86_64 4.8.5- 16 .el7_4.1 dependency: libm.so.6 ( ) ( 64bit ) provider: glibc.x86_64 2.17 - 196 .el7_4.2 dependency: libm.so.6 ( GLIBC_2.2.5 ) ( 64bit ) provider: glibc.x86_64 2.17 - 196 .el7_4.2 dependency: libncursesw.so.5 ( ) ( 64bit ) provider: ncurses-libs.x86_64 5.9 - 14.20130511 .el7_4 dependency: libtinfo.so.5 ( ) ( 64bit ) provider: ncurses-libs.x86_64 5.9 - 14.20130511 .el7_4 dependency: rtld ( GNU_HASH ) provider: glibc.x86_64 2.17 - 196 .el7_4.2 provider: glibc.i686 2.17 - 196 .el7_4.2 Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: centos.excellmedia.net * epel: repo.ugm.ac.id * extras: centos.excellmedia.net * updates: centos.excellmedia.net package: htop.x86_64 2.0.2-1.el7 dependency: libc.so.6(GLIBC_2.15)(64bit) provider: glibc.x86_64 2.17-196.el7_4.2 dependency: libgcc_s.so.1()(64bit) provider: libgcc.x86_64 4.8.5-16.el7_4.1 dependency: libgcc_s.so.1(GCC_3.0)(64bit) provider: libgcc.x86_64 4.8.5-16.el7_4.1 dependency: libgcc_s.so.1(GCC_3.3.1)(64bit) provider: libgcc.x86_64 4.8.5-16.el7_4.1 dependency: libm.so.6()(64bit) provider: glibc.x86_64 2.17-196.el7_4.2 dependency: libm.so.6(GLIBC_2.2.5)(64bit) provider: glibc.x86_64 2.17-196.el7_4.2 dependency: libncursesw.so.5()(64bit) provider: ncurses-libs.x86_64 5.9-14.20130511.el7_4 dependency: libtinfo.so.5()(64bit) provider: ncurses-libs.x86_64 5.9-14.20130511.el7_4 dependency: rtld(GNU_HASH) provider: glibc.x86_64 2.17-196.el7_4.2 provider: glibc.i686 2.17-196.el7_4.2

How to install the specified packages [ RPM(s) ]

To install package called httpd:

# yum install {package-name-1} {package-name-2}

# yum install httpd

# yum install nginx mariadb-server php-fpm

# yum install htop

Sample outputs:



$ sudo yum localinstall foo.rpm

$ sudo yum https://server1.cyberciti.biz/foo.rpm

$ yum --showduplicates list php

$ ## now install to particular version ##

$ sudo yum update-to php-version

$ sudo yum update-to php-7.0.2-1.nix

How to downgrade a package to an earlier version

To install a package from a local file called foo.rpm or http, or ftp mirror:It is possible to install particular version too. To find or show duplicates, in repos, in list/search commands

The syntax is:

# yum downgrade {pkg}

# yum downgrade nginx

How to reinstall a package again

The syntax is:

# yum reinstall {pkg}

# yum reinstall httpd

How to remove / uninstall the specified packages [ RPM(s) ]

Remove package called httpd, enter:

# yum remove {package-name-1} {package-name-2}

# yum erase {package-name-1} {package-name-2}

# yum remove httpd

# yum erase htop

How to remove unneeded/unwanted packages/deps

The syntax is:

# yum autoremove

Sample outputs:

Loaded plugins: fastestmirror Resolving Dependencies --> Running transaction check ---> Package tcp_wrappers-libs.x86_64 0 : 7.6 - 77 .el7 will be erased --> Finished Dependency Resolution --> Finding unneeded leftover dependencies Found and removing 0 unneeded dependencies Dependencies Resolved = ====================================================================================================== Package Arch Version Repository Size = ====================================================================================================== Removing: tcp_wrappers-libs x86_64 7.6 - 77 .el7 @base 131 k Transaction Summary = ====================================================================================================== Remove 1 Package Installed size: 131 k Is this ok [ y/N ] : y Downloading packages: Running transaction check Running transaction test Transaction test succeeded Running transaction Erasing : tcp_wrappers-libs- 7.6 - 77 .el7.x86_64 1 / 1 Verifying : tcp_wrappers-libs- 7.6 - 77 .el7.x86_64 1 / 1 Removed: tcp_wrappers-libs.x86_64 0 : 7.6 - 77 .el7 Complete! Loaded plugins: fastestmirror Resolving Dependencies --> Running transaction check ---> Package tcp_wrappers-libs.x86_64 0:7.6-77.el7 will be erased --> Finished Dependency Resolution --> Finding unneeded leftover dependencies Found and removing 0 unneeded dependencies Dependencies Resolved ======================================================================================================= Package Arch Version Repository Size ======================================================================================================= Removing: tcp_wrappers-libs x86_64 7.6-77.el7 @base 131 k Transaction Summary ======================================================================================================= Remove 1 Package Installed size: 131 k Is this ok [y/N]: y Downloading packages: Running transaction check Running transaction test Transaction test succeeded Running transaction Erasing : tcp_wrappers-libs-7.6-77.el7.x86_64 1/1 Verifying : tcp_wrappers-libs-7.6-77.el7.x86_64 1/1 Removed: tcp_wrappers-libs.x86_64 0:7.6-77.el7 Complete!

Display the list of available packages

$ yum list all

Display list of group software

Type the following command:

$ yum grouplist

OR

$ yum groups list

Output:

Installed Groups: Engineering and Scientific MySQL Database Editors System Tools Text-based Internet Legacy Network Server DNS Name Server Dialup Networking Support FTP Server Network Servers Legacy Software Development Legacy Software Support Development Libraries Graphics Web Server Ruby Printing Support Mail Server Server Configuration Tools PostgreSQL Database Available Groups: Office/Productivity Administration Tools Beagle Development Tools GNOME Software Development X Software Development Virtualization GNOME Desktop Environment Authoring and Publishing Mono Games and Entertainment XFCE-4.4 Tomboy Java Java Development Emacs X Window System Windows File Server KDE Software Development KDE (K Desktop Environment) Horde Sound and Video FreeNX and NX News Server Yum Utilities Graphical Internet Done

Install all the default packages by group

Install all ‘Development Tools’ group packages, enter:

# yum groupinstall "Development Tools"

OR

# yum groups install "Development Tools"

Update all the default packages by group

Update all ‘Development Tools’ group packages, enter:

# yum groupupdate "Development Tools"

OR

# yum groups update "Development Tools"

Remove all packages in a group

Remove all ‘Development Tools’ group packages, enter:

# yum groupremove "Development Tools"

OR

# yum groups remove "Development Tools"

Display description and contents of a package group

$ yum groupinfo 'Development Tools'

OR

$ yum groups info 'Development Tools'

$ yum groups info 'File and Print Server'

Sample outputs:

Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: del-mirrors.extreme-ix.org * epel: ftp.riken.jp * extras: del-mirrors.extreme-ix.org * updates: del-mirrors.extreme-ix.org Environment Group: File and Print Server Environment-Id: file-print-server-environment Description: File, print, and storage server for enterprises. Mandatory Groups: +base +core +file-server +print-server Optional Groups: +backup-client +backup-server +debugging +directory-client +guest-agents +ha +hardware-monitoring +java-platform +large-systems +network-file-system-client +performance +remote-system-management +resilient-storage Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: del-mirrors.extreme-ix.org * epel: ftp.riken.jp * extras: del-mirrors.extreme-ix.org * updates: del-mirrors.extreme-ix.org Environment Group: File and Print Server Environment-Id: file-print-server-environment Description: File, print, and storage server for enterprises. Mandatory Groups: +base +core +file-server +print-server Optional Groups: +backup-client +backup-server +debugging +directory-client +guest-agents +ha +hardware-monitoring +java-platform +large-systems +network-file-system-client +performance +remote-system-management +resilient-storage

Install particular architecture package

If you are using 64 bit RHEL version it is possible to install 32 packages (please note that 32 bit support is dropped in the latest version of CentOS/RHEL 7.x):

# yum install {package-name}.{architecture}

# yum install mysql.i386

Display packages not installed via official RHN subscribed repos

Show all packages not available via subscribed channels or repositories i.e show packages installed via other repos:

$ yum list extras

Sample output:

Loading "installonlyn" plugin Loading "security" plugin Setting up repositories Reading repository metadata in from local files Extra Packages DenyHosts.noarch 2.6-python2.4 installed VMwareTools.i386 6532-44356 installed john.i386 1.7.0.2-3.el5.rf installed kernel.i686 2.6.18-8.1.15.el5 installed kernel-devel.i686 2.6.18-8.1.15.el5 installed lighttpd.i386 1.4.18-1.el5.rf installed lighttpd-fastcgi.i386 1.4.18-1.el5.rf installed psad.i386 2.1-1 installed rssh.i386 2.3.2-1.2.el5.rf installed

Display what package provides the file

You can easily find out what RPM package provides the file. For example find out what provides the /etc/passwd file:

$ yum whatprovides /etc/passwd

OR

$ yum provides /etc/passwd

Sample output:

Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: centos.excellmedia.net * epel: repo.ugm.ac.id * extras: centos.excellmedia.net * updates: centos.excellmedia.net setup-2.8.71-7.el7.noarch : A set of system configuration and setup files Repo : base Matched from: Filename : /etc/passwd setup-2.8.71-7.el7.noarch : A set of system configuration and setup files Repo : @base Matched from: Filename : /etc/passwd

You can use same command to list packages that satisfy dependencies:

$ yum whatprovides {dependency-1} {dependency-2}

$ yum provides string

$ yum provides '*bin/nginx*'

How to clean yum cache

You can delete all cached and downloaded package, headers and other info:

# yum clean all

Sample outputs:

Loaded plugins: fastestmirror Cleaning repos: base epel extras updates Cleaning up everything Maybe you want: rm -rf /var/cache/yum, to also free up space taken by orphaned data from disabled or removed repos Cleaning up list of fastest mirrors Loaded plugins: fastestmirror Cleaning repos: base epel extras updates Cleaning up everything Maybe you want: rm -rf /var/cache/yum, to also free up space taken by orphaned data from disabled or removed repos Cleaning up list of fastest mirrors

Above command can help to clear problems that can result from out-of-date headers, network errors and more. To check the local RPM database for problems:

# yum check

How to list software repositories

$ yum repolist

Sample outputs:

repo id repo name status base/ 7 /x86_64 CentOS- 7 - Base 9591 epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 12155 extras/ 7 /x86_64 CentOS- 7 - Extras 327 nginx/x86_64 nginx repo 313 updates/ 7 /x86_64 CentOS- 7 - Updates 1573 repolist: 23959 repo id repo name status base/7/x86_64 CentOS-7 - Base 9591 epel/x86_64 Extra Packages for Enterprise Linux 7 - x86_64 12155 extras/7/x86_64 CentOS-7 - Extras 327 nginx/x86_64 nginx repo 313 updates/7/x86_64 CentOS-7 - Updates 1573 repolist: 23959

See information about enabled yum repositories

To get info about nginx repo, run:

$ yum repoinfo nginx

Sample outputs:

Repo-id : nginx/x86_64 Repo-name : nginx repo Repo-status : enabled Repo-revision: 1511279401 Repo-updated : Tue Nov 21 15 : 50 :07 2017 Repo-pkgs : 313 Repo-size : 143 M Repo-baseurl : http://nginx.org/packages/mainline/centos/ 7 /x86_64/ Repo-expire : 21600 second ( s ) ( last: Sat Dec 23 16 : 49 : 24 2017 ) Filter : read-only:present Repo-filename: /etc/yum.repos.d/nginx.repo repolist: 313 Repo-id : nginx/x86_64 Repo-name : nginx repo Repo-status : enabled Repo-revision: 1511279401 Repo-updated : Tue Nov 21 15:50:07 2017 Repo-pkgs : 313 Repo-size : 143 M Repo-baseurl : http://nginx.org/packages/mainline/centos/7/x86_64/ Repo-expire : 21600 second(s) (last: Sat Dec 23 16:49:24 2017) Filter : read-only:present Repo-filename: /etc/yum.repos.d/nginx.repo repolist: 313

How to work with given repository

The syntax is:

# yum repo-pkgs repo_name_id <list|install|remove|upgrade|reinstall> [pkg]

List all packages from nginx repository:

# yum repo-pkgs nginx list

Get info about nginx package from nginx repository:

# yum repo-pkgs nginx info | more

# yum repo-pkgs nginx info nginx

Install a package named ‘nginx’ from nginx repository:

# yum repo-pkgs nginx install nginx

Install ALL PACKAGES from nginx repository:

# yum repo-pkgs nginx install

Erase/remove/delete a package named ‘nginx’ from nginx repository:

# yum repo-pkgs nginx remove nginx

Erase/remove/delete ALL PACKAGES from nginx repository:

# yum repo-pkgs nginx remove

Upgrade nginx package from nginx repository:

# yum repo-pkgs nginx upgrade nginx

Reinstall nginx package from nginx repository:

# yum repo-pkgs nginx reinstall nginx

How to view and use yum history

The syntax is:

# yum history

# yum history list

# yum info ID

# yum undo ID

# yum redo ID

See “CentOS / RHEL: See Detailed History Of yum Commands” for more info.

How to see help about yum command

Refer yum command man page for more information:

$ man yum

$ yum help

$ yum help install

$ yum help erase

Sample outputs:

Loaded plugins: fastestmirror erase PACKAGE... Remove a package or packages from your system alias: remove

Summary of yum command

Command name Description/usage yum check-update Display list of available package updates yum update

yum update pkg1 Update all packages or update the pkg1 package yum install pkg Install a package yum localinstall pkg.rpm Install a package from a file named pkg.rpm yum erase pkg Remove a package yum remove pkg Same as above yum autoremove Free disk space by removing unwanted packages yum reinstall pkg Reinstall a package yum downgrade pkg Downgrade a package to an older version yum check Check rpm database for errors/problems yum clean packages Delete cached packages database yum clean all Delete out all packages and meta data from disk cache yum list

yum list installed

yum list php

yum list available List package names yum deplist pkg1 Show dependencies for a pkg1 yum info pkg Show info about a package yum search pkg

yum search regex Search package names yum provides string

yum whatprovides string List package that provides the given file or other info yum history list Show a list of all yum command history action such as install/update/erase yum history info ID Get info of yum action ID yum history undo ID Undo the yum command action from ID yum history redor ID Redot the yum command action from ID yum grouplist List package groups yum groupinstall ‘Group Name’ Install all packages in the given group name yum groupinfo ‘Group Name’ See packages in the given group name yum groupremove ‘Group Name’ Remove/Delete all packages in the selected group yum repolist Show a list of all enabled repositories yum repoinfo repoID Show info about repoID yum repo-pkgs repoID list Show packages from repoID repo yum repo-pkgs repoID install Install all packages from repoID repo yum repo-pkgs repoID remove Erase all packages from repoID repo yum repo-pkgs repoID reinstall Reinstall all packages from repoID repo yum help

yum help commandman yum Show help about yum command or read yum command man page