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This article mainly shows you "in the Red Hat Linux how to use the YUM package manager", the content is easy to understand, well-organized, hope to help you solve your doubts, the following let the editor lead you to study and learn "how to use the YUM package manager in Red Hat Linux" this article.

YUM is a tool provided in the RHEL system to install, uninstall and search for software packages. It can do more than install and uninstall packages, and it can do more, which we will show you in this article.

YUM can automatically install dependent packages for software packages. For example, when you install httpd using yum, it also automatically installs https apache server and the packages it depends on. It is not so convenient to install through the rpm package. You must download all the packages it depends on, and then install them in order

The yum tool obtains information about software packages from a software repository on a remote server (usually provided by an OS provider). A software repository is a collection of rpm packages that can run on a particular architecture. For example, there is a software repository for 32-bit and 64-bit systems, and a software repository for RHEL5 and RHEL6. You can also set up a local repository and configure your yum to search for installation packages from your local repository. In the next example, I'll show you other things yum can do besides installing and uninstalling the software. For ease of understanding, I will use the httpd package on my Amazon EC2 RHEL 6.4 server as an example.

Search for software packages from the software repository

# yum search httpd Loaded plugins: amazon-id, rhui-lb, security = N Matched S: httpd = httpd.x86_64: Apache HTTP Server httpd-devel.i686: Development interfaces for the Apache HTTP server httpd-devel.x86_64: Development interfaces for the Apache HTTP server httpd-manual.noarch: Documentation for the Apache HTTP server httpd-tools.x86_64: Tools for use with the Apache HTTP Server mod_dav_svn.x86_64: Apache httpd module for Subversion server mod_dnssd.x86_64: An Apache HTTPD module which adds Zeroconf support

For detailed output information, you can use the following command:

# yum provides httpd Loaded plugins: amazon-id, rhui-lb, security httpd-2.2.15-26.el6.x86_64: Apache HTTP Server Repo: rhui-REGION-rhel-server-releases Matched from:

Yum provides httpd searches the software repository for software packages that contain httpd.

Provide a list of all software groups

# yum grouplist

The above command will show you the installed and available software groups. You can use the software group installation option to install one of the software groups. For example, we will install a software group for PHP Support. This software group contains the required PHP packages.

# yum groupinstall PHP Support Loaded plugins: amazon-id, downloadonly, rhui-lb, security Setting up Group Process Warning: Group Support does not exist. Resolving Dependencies-> Running transaction check-- > Package php.x86_64 0VIA 5.3.3-23.el6_4 will be installed-> Processing Dependency: php-common (x86-64) = 5.3.3-23.el6_4 for package: php-5.3.3-23.el6_4.x86_64-> Processing Dependency: php-cli (x86-64) = 5.3.3-23.el6_4 for package: php-5.3.3-23.el6_4.x86 _ 64-- > Package php-gd.x86_64 0Processing Dependency 5.3.3-23.el6_4 will be installed-> Processing Dependency: libXpm.so.4 () (64bit) for package: php-gd-5.3.3-23.el6_4.x86_64-- > Package php-pdo.x86_64 0VV 5.3.3-23.el6_4 will be installed-- > Package php-pear.noarch 1Processing Dependency 1.9.4-4.el6 will be installed-- > Package Php-xml.x86_64 0Running transaction check 5.3.3-23.el6_4 will be installed-> Running transaction check-- > Package libXpm.x86_64 0rig 3.5.10-2.el6 will be installed-- > Package php-cli.x86_64 0Package libXpm.x86_64 5.3.3-23.el6_4 will be installed-- > Package php-common.x86_64 0rig 5.3.3-23.el6_4 will be installed-> Finished Dependency Resolution Dependencies Resolved = Package Arch Version Repository Size = Installing : php x86 "64 5.3.3-23.el6_4 rhui-REGION-rhel-server-releases 1.1m php-gd x86" 64 5.3.3-23.el6_4 rhui-REGION-rhel-server-releases 106k php-pdo x86 "64 5.3.3-23.el6_4 rhui-REGION-rhel-server-releases 75k php-pear noarch 1purl 1.9.4-4.el6 rhui-REGION-rhel-server-releases 393k php-xml x86" 64 5.3 .3-23.el6_4 rhui-REGION-rhel-server-releases 103 k Installing for dependencies: libXpm x86'64 3.5.10-2.el6 rhui-REGION-rhel-server-releases 51 k php-cli x86'64 5.3.3-23.el6_4 rhui-REGION-rhel-server-releases 2.2 M php-common x86'64 5.3.3-23.el6_4 rhui-REGION-rhel-server-releases 524 k Transaction Summary = = Install 8 Package (s) Total download size: 4 .5 M Installed size: 16 M Is this ok [yamp N]: y Downloading Packages: (1ape 8): libXpm-3.5.10-2.el6.x86_64.rpm | 51 kB 00:00 (2max 8): php-5.3.3-23.el6_4.x86_64.rpm | 1.1 MB 00:00 (3max 8): php-cli-5.3.3-23.el6_4.x86_64.rpm | 2.2 MB 00:00 ( 423.el6_4.x86_64.rpm 8): php-common-5.3.3-23.el6_4.x86_64.rpm | 524 kB 00:00 (5 kB 8): php-gd-5.3.3-23.el6_4.x86_64.rpm | 106 kB 00:00 (6 23.el6_4.x86_64.rpm 8): php-pdo-5.3.3-23.el6_4.x86_64.rpm | 75 kB 00:00 (7 php-pear-1.9.4 8): php-pear-1.9.4-4.el6.noarch. Rpm | 393rd kB 00:00: php-xml-5.3.3-23.el6_4.x86_64.rpm | 103 kB 00:00-Total 2.9 MB/s | 4.5 MB 00:01 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing: php- Common-5.3.3-23.el6_4.x86_64 1 23.el6_4.x86_64 8 Installing: php-cli-5.3.3-23.el6_4.x86_64 2 2.el6.x86_64 8 Installing: libXpm-3.5.10-2.el6.x86_64 3 2.el6.x86_64 8 Installing: php-gd-5.3.3-23.el6_4.x86_64 4 2.el6.x86_64 8 Installing: 1:php-pear-1.9.4-4.el6.noarch 5 1:php-pear-1.9.4: php-5.3.3- 23.el6_4.x86_64 6 4.el6.noarch 8 Installing: php-xml-5.3.3-23.el6_4.x86_64 7 4.el6.noarch 8 Installing: php-pdo-5.3.3-23.el6_4.x86_64 8 Verifying: 1:php-pear-1.9.4-4.el6.noarch 1 Verifying: php-xml-5.3.3-23.el6_4.x86_64 2 4.el6.noarch 8 Verifying: php-common-5.3.3-23. El6_4.x86_64 3 23.el6_4.x86_64 8 Verifying: libXpm-3.5.10-2.el6.x86_64 4 23.el6_4.x86_64 8 Verifying: php-cli-5.3.3-23.el6_4.x86_64 5 Verifying 8 Verifying: php-5.3.3-23.el6_4.x86_64 6 23.el6_4.x86_64 8 Verifying: php-pdo-5.3.3-23.el6_4.x86_64 7 23.el6_4.x86_64 8 Verifying: php-gd-5.3.3-23.el6 pound 4.x86 _ 64 8ax 8 Installed: php.x86_64 0 23.el6_4 php-gd.x86_64 5.3.3-23.el6_4 php-pdo.x86_64 0 V 5.3.3-23.el6_4 php-pear.noarch 1 V 1.9.4-4.el6 php-xml.x86_64 0 V 5.3.3-23.el6_4 Dependency Installed: libXpm.x86_64 0 V 3.5.10-2.el6 php -cli.x86_64 0V 5.3.3-23.el6_4 php-common.x86_64 0V 5.3.3-23.el6_4 Complete!

Install the package using YUM

You can install the package using the yum install command, as follows:

# yum install httpd Loaded plugins: amazon-id, rhui-lb Security Setting up Install Process Resolving Dependencies-> Running transaction check-- > Package httpd.x86_64 0VR 2.2.15-29.el6_4 will be installed-> Processing Dependency: httpd-tools = 2.2.15-29.el6_4 for package: httpd-2.2.15-29.el6_4.x86_64-> Processing Dependency: apr-util-ldap for package: httpd-2.2.15-29.el6_4.x86_64-> Processing Dependency: libaprutil-1.so.0 ( ) (64bit) for package: httpd-2.2.15-29.el6_4.x86_64-> Processing Dependency: libapr-1.so.0 () (64bit) for package: httpd-2.2.15-29.el6_4.x86_64-> Running transaction check-- > Package apr.x86_64 029.el6_4.x86_64 1.3.9-5.el6_2 will be installed-- > Package apr-util.x86_64 0vir 1.3.9-3.el6_0.1 will be installed -- > Package apr-util-ldap.x86_64 029.el6_4 will be installed 1.3.9-3.el6_0.1 will be installed-- > Package httpd-tools.x86_64 0Package httpd-tools.x86_64 2.2.15-29.el6_4 will be installed-> Finished Dependency Resolution Dependencies Resolved = Package Arch Version Repository Size = Installing: httpd x8634 2.2.15-29.el6_4 rhui-REGION-rhel-server-releases 821k Installing for dependencies: apr x86141.3.9-5.el6_2 rhui -REGION-rhel-server-releases 123k apr-util x86'64 1.3.9-3.el6_0.1 rhui-REGION-rhel-server-releases 87 k apr-util-ldap x86'64 1.3.9-3.el6_0.1 rhui-REGION-rhel-server-releases 15 k httpd-tools x86'64 2.2.15-29.el6_4 rhui-REGION-rhel-server-releases 73 k Transaction Summary = = Install 5 Package (s) Total download size: 1.1 M Installed size : 3.6 M Is this ok [y/N]: y

As you can see, yum installs additional packages when installing httpd. This is called dependency package parsing completed by yum.

If you don't want yum to pop up the [y yum N] option, you can use yum install-y httpd

Update an existing software package using the yum update command

# yum update httpd Loaded plugins: amazon-id, rhui-lb, security Setting up Update Process No Packages marked for Update

This means that the httpd package installed on your system is already the latest version of the yum repository.

Update all software packages on the server

# yum update

The above command updates all packages on the system to the latest version, including kernel packages, which means that your OS is updated to the latest version provided by RHEL.

Download the RPM package but not install it

You can use yum to download RPM packages from RHEL or CentOS's repository but do not install them. You first need to download a plug-in and let yum download only the rpm package without installing it. The plug-in is called downloadonly and can be installed through yum, as follows:

# yum install yum-downloadonly Loaded plugins: amazon-id, rhui-lb Security Setting up Install Process Resolving Dependencies-> Running transaction check-- > Package yum-plugin-downloadonly.noarch 0vir 1.1.30-14.el6 will be installed-> Finished Dependency Resolution Dependencies Resolved = Package Arch Version Repository Size = Installing: yum-plugin-downloadonly noarch 1.1.30-14.el6 rhui-REGION-rhel-server-releases 20 k Transaction Summary = Install 1 Package (s) Total download size: 20 k Installed size: 21 k Is this ok [y k Transaction Summary N]: y Downloading Packages: yum-plugin-downloadonly-1 .1.30-14.el6.noarch.rpm | 20 kB 00:00 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing: yum-plugin-downloadonly-1.1.30-14.el6.noarch 1 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing 1 Verifying: yum-plugin-downloadonly-1.1.30-14.el6.noarch 1 Acer 1 Installed: yum-plugin-downloadonly.noarch 0VX 1.1.30-14.el6 Complete!

Now you can download the package instead of installing it from the software repository, with the following command:

# yum install httpd-devel-downloadonly

By default, the package is downloaded to the / var/cache/yum/ directory, but you can add additional options to download it to the specified location

# yum install httpd-devel-downloadonly-downloaddir=/opt

If you have a rpm package but don't have the package it depends on, you don't know where to get the package it depends on. You can still install the rpm package through yum and get the package it depends on from the software repository. Let's install the httpd-devel-2.2.15-29.el64.x8664 RPM package that we just downloaded.

# yum localinstall / opt/httpd-devel-2.2.15-29.el6_4.x86_64.rpm Loaded plugins: amazon-id, downloadonly, rhui-lb Security Setting up Local Package Process Examining / opt/httpd-devel-2.2.15-29.el6_4.x86_64.rpm: httpd-devel-2.2.15-29.el6_4.x86_64 Marking / opt/httpd-devel-2.2.15-29.el6_4.x86_64.rpm to be installed Resolving Dependencies-> Running transaction check-- > Package httpd-devel.x86_64 0VR 2.2.15-29.el6_4 will be installed-> Processing Dependency: apr- Devel for package: httpd-devel-2.2.15-29.el6_4.x86_64-> Processing Dependency: apr-util-devel for package: httpd-devel-2.2.15-29.el6_4.x86_64-> Running transaction check-- > Package apr-devel.x86_64 0rig 1.3.9-5.el6_2 will be installed-- > Package apr-util-devel.x86_64 0vir 1.3.9-3.el6_0.1 will be installed-> Processing Dependency: openldap-devel for package: apr-util-devel-1.3.9-3.el6_0.1.x86_64-> Processing Dependency: expat-devel for package: apr-util-devel-1.3.9-3.el6_0.1.x86_64-> Processing Dependency: db4-devel for package: apr-util-devel-1.3.9-3.el6_0.1.x86_64-> Running transaction check-- > Package db4-devel.x86_64 0:4. 7.25-18.el6_4 will be installed-> Processing Dependency: db4-cxx = 4.7.25-18.el6_4 for package: db4-devel-4.7.25-18.el6_4.x86_64-> Processing Dependency: db4 = 4.7.25-18.el6_4 for package: db4-devel-4.7.25-18.el6_4.x86_64-> Processing Dependency: libdb_cxx-4.7.so () (64bit) for package: db4-devel- 4.7.25-18.el6_4.x86_64-- > Package expat-devel.x86_64 0vir 2.0.1-11.el6_2 will be installed-- > Package openldap-devel.x86_64 0vir 2.4.23-32.el6_4.1 will be installed-> Processing Dependency: cyrus-sasl-devel > = 2.1for package: openldap-devel-2.4.23-32.el6_4.1.x86_64-> Running transaction check-- > Package cyrus- Sasl-devel.x86_64 0rig 2.1.23-13.el6_3.1 will be installed-- > Package db4.x86_64 0vir 4.7.25-17.el6 will be updated-> Processing Dependency: db4 = 4.7.25-17.el6 for package: db4-utils-4.7.25-17.el6.x86_64-- > Package db4.x86_64 0vir 4.7.25-18.el6_4 will be an update-- > Package db4-cxx.x86_ 64 018.el6_4 will be installed 4.7.25-- 18.el6_4 will be installed-> Running transaction check-- > Package db4-utils.x86_64 0vir 4.7.25-17.el6 will be updated-- > Package db4-utils.x86_64 0vir 4.7.25-18.el6_4 will be an update-> Finished Dependency Resolution Dependencies Resolved = = Package Arch Version Repository Size = Installing: httpd-devel x86 httpd-devel-2.2.15 64 2.2.15-29.el6_4 / httpd-devel-2.2.15-29 .el6 _ 4.x86_64 526 k Installing for dependencies: apr-devel x86'64 1.3.9-5.el6_2 rhui-REGION-rhel-server-releases 176k apr-util-devel x86'64 1.3.9-3.el6_0.1 rhui-REGION-rhel-server-releases 69 k cyrus-sasl-devel x86'64 2.1.23-13.el6_3.1 rhui-REGION-rhel-server-releases 302 k db4-cxx x86'64 4.7.25-18. El6_4 rhui-REGION-rhel-server-releases 588k db4-devel x86'64 4.7.25-18.el6_4 rhui-REGION-rhel-server-releases 6.6m expat-devel x86'64 2.0.1-11.el6_2 rhui-REGION-rhel-server-releases 120k openldap-devel x86'64 2.4.23-32.el6_4.1 rhui-REGION-rhel-server-releases 1.1 M Updating for dependencies: db4 x86'64 4.7.25-18. El6_4 rhui-REGION-rhel-server-releases 563k db4-utils x86'64 4.7.25-18.el6_4 rhui-REGION-rhel-server-releases 130 k Transaction Summary = = Install 8 Package (s) Upgrade 2 Package (s) Total size: 10 M Is this ok [y M Is this ok N]: y Downloading Packages: Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Updating: db4- 4.7.25-18.el6_4.x86_64 1 M Is this ok 12 Installing: apr-devel-1. 3.9-5.el6_2.x86_64 2 18.el6_4.x86_64 12 Installing: expat-devel-2.0.1-11.el6_2.x86_64 3 18.el6_4.x86_64 12 Installing: db4-cxx-4.7.25-18.el6_4.x86_64 4 Installing 12 Installing: db4-devel-4.7.25-18.el6_4.x86_64 5 18.el6_4.x86_64 12 Installing: cyrus-sasl-devel-2.1.23-13.el6_3.1.x86_64 6 18.el6_4.x86_64 12 Installing: openldap- Devel-2.4.23-32.el6_4.1.x86_64 7 18.el6_4.x86_64 12 Installing: apr-util-devel-1.3.9-3.el6_0.1.x86_64 8 Installing 12 Installing: httpd-devel-2.2.15-29.el6_4.x86_64 9 29.el6_4.x86_64 12 Updating: db4-utils-4.7.25-18.el6_4.x86_64 10 29.el6_4.x86_64 12 Cleanup: db4-utils-4.7.25-17.el6.x86_64 11 Cleanup 12 Cleanup: db4- 4.7.25-17.el6.x86_64 12 Verifying: apr-devel-1.3.9-5.el6_2.x86_64 1 cyrus-sasl-devel-2.1.23 12 Verifying: cyrus-sasl-devel-2.1.23-13.el6_3.1.x86_64 2 Verifying: apr-util-devel-1.3.9-3.el6_0.1.x86_64 3 Verifying 12 Verifying: db4-cxx-4.7.25-18.el6 pick 4.x86 _ 64 418.el6_4.x86_64 12 Verifying: httpd-devel-2.2.15-29.el6_4.x86_64 5 Verifying 12 Verifying: openldap-devel-2.4.23-32.el6_4.1.x86_64 6 Verifying 12 Verifying: expat-devel-2.0.1-11.el6_2.x86_64 7 Verifying: db4-devel-4.7.25-18.el6_4.x86_64 8 Verifying 12 Verifying: db4- 4.7.25-18.el6 pound 4.x86 _ 64 9 18.el6_4.x86_64 12 Verifying: db4-utils-4.7.25-18.el6_4.x86_64 10 29.el6_4 Dependency Installed 12 Verifying: db4- 4.7.25-17.el6.x86_64 11 Verifying 12 Verifying: db4-utils-4.7.25-17.el6.x86_64 12 Installed: httpd-devel.x86_64 0 29.el6_4 Dependency Installed 2.2.15-29.el6_4 Dependency Installed: apr-devel.x86_64 0 29.el6_4 Dependency Installed 1.3.9-5.el6_2 apr-util-devel .x86 _ 640 11.el6_2 openldap-devel.x86_64 1.3.9-3.el6_0.1 cyrus-sasl-devel.x86_64 0v 2.1.23-13.el6_3.1 db4-cxx.x86_64 0v 4.7.25-18.el6_4 db4-devel.x86_64 0v 4.7.25-18.el6_4 expat-devel.x86_64 0v 2.0.1-11.el6_2 openldap-devel.x86_64 0v 2.4.23-32. El6_4.1 Dependency Updated: db4.x86_64 0vl 4.7.25-18.el6_4 db4-utils.x86_64 0vl 4.7.25-18.el6_4 Complete!

Uninstall the package using yum

Use yum remove to uninstall the package. Examples are as follows:

# yum remove httpd Failed to set locale, defaulting to C Loaded plugins: amazon-id, downloadonly, rhui-lb Security Setting up Remove Process Resolving Dependencies-> Running transaction check-- > Package httpd.x86_64 0vir 2.2.15-29.el6_4 will be erased-> Processing Dependency: httpd-mmn = 20051115 for package: php-5.3.3-23.el6_4.x86_64-> Processing Dependency: httpd = 2.2.15-29.el6_4 for package: httpd-devel-2.2.15-29.el6_4.x86_64-> Running transaction check-> Package httpd-devel. X86 httpd 64 0Finished Dependency Resolution Dependencies Resolved 2.2.15-29.el6_4 will be erased-- > Package php.x86_64 0vir 5.3.3-23.el6_4 will be erased-> Finished Dependency Resolution Dependencies Resolved = Package Arch Version Repository Size = Removing: httpd x86 Removing 64 2.2.15-29.el6_4 @ rhui-REGION-rhel-server-releases 2.9 M Removing for dependencies: httpd-devel x86 29.el6_4 64 2.2.15-29.el6_4 @ / httpd-devel-2.2. 15-29.el6_4.x86_64 526k php x86'64 5.3.3-23.el6_4 @ rhui-REGION-rhel-server-releases 3.5M Transaction Summary = Remove 3 Package (s) Installed size: 7.0 M Is this ok [y 29.el6_4.x86_64 N]: y Downloading Packages: Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Erasing: httpd-devel-2.2.15-29.el6_4.x86_64 1 Erasing: php-5.3.3- 23.el6_4.x86_64 2 29.el6_4.x86_64 3 Erasing: httpd-2.2.15-29.el6_4.x86_64 3 Verifying: httpd-2.2.15-29.el6_4.x86_64 1 Verifying: httpd-devel-2.2.15-29.el6_4.x86_64 2 29.el6_4.x86_64 3 Verifying: php-5.3.3-23.el6_4.x86_64 3 Removed: httpd.x86_64 0 Vera 2.2.15-29.el6 _ 4 Dependency Removed: httpd-devel.x86_64 0VR 2.2.15-29.el6_4 php.x86_64 0V 5.3.3-23.el6_4 Complete!

List all installed packages

If you want to list all the packages installed on your system, you can use the yum list installed command. This command is useful in combination with the grep command to check whether a particular package has been installed. This is similar to using the rpm-qa command to ask about installed packages.

# yum list installed Loaded plugins: amazon-id, downloadonly, rhui-lb Security Installed Packages ConsoleKit.x86_64 0.4.1-3.el6 @ koji-override-0/$releasever ConsoleKit-libs.x86_64 0.4.1-3.el6 @ koji-override-0/$releasever MAKEDEV.x86_64 3.24-6.el6 @ koji-override-0/$releasever PyYAML.x86_64 3.10-3.1.el6 @ koji-override-0/$releasever Red_Hat_Enterprise_Linux-Release_Notes-6-en-US.noarch 4-2.el6 @ koji-override- 0/$releasever SDL.x86_64 1.2.14-3.el6 @ koji-override-0/$releasever abrt.x86_64 2.0.8-15.el6 @ koji-override-0/$releasever abrt-addon-ccpp.x86_64 2.0.8-15.el6 @ koji-override-0/$releasever abrt-addon-kerneloops.x86_64 2.0.8-15.el6 @ koji-override-0/$releasever abrt-addon-python.x86_64 2.0.8-15.el6 @ koji- Override-0/$releasever abrt-cli.x86_64 2.0.8-15.el6 @ koji-override-0/$releasever abrt-libs.x86_64 2.0.8-15.el6 @ koji-override-0/$releasever abrt-tui.x86_64 2.0.8-15.el6 @ koji-override-0/$releasever acl.x86_64 2.2.49-6.el6 @ koji-override-0/$releasever acpid.x86_64 1.0.10-2.1.el6 @ koji-override- 0/$releasever aic94xx-firmware.noarch 30-2.el6 @ koji-override-0/$releasever. . Output Truncated.

Lists the available software libraries through which you can query, install, and update software packages

# yum repolist Loaded plugins: amazon-id, downloadonly, rhui-lb, security repo id repo name status rhui-REGION-client-config-server-6 Red Hat Update Infrastructure 2.0 Client Configuration Server 6 4 rhui-REGION-rhel-server-releases Red Hat Enterprise Linux Server 6 (RPMs) 10994 rhui-REGION-rhel-server-releases-optional Red Hat Enterprise Linux Server 6 Optional (RPMs) 6250 repolist: 17248 is all the content of this article "how to use YUM package Manager in Red Hat Linux". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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