How to Install Programs on Linux with Yum

Yum is an acronym for Yellow Dog Updater,
Modified. It is a tool used to manage the installation and removal of
packages in Linux distributions, which use the RPM system.

It is a file package manager similar to
APT-GET that automatically handles dependencies
computing them and solving what must be done to treat them.

It has a configuration file that
specifies which repositories YUM should use to search and download
the RPM packages.

RPM-based Linux won’t always have the YUM package manager installed. If you need to install YUM, it can be obtained at http://yum.baseurl.org.

The installation command is:

# rpm -ivh yum.rpm

YUM requires you to configure the
package repositories in the yum.conf configuration file

Example:

# vi /etc/yum.conf

[fedora-us-3-core]

name=Fedora Core 3 — Fedora US mirror

baseurl= http://SERVERNAME/fedora/fedora/$releasever/$basearch/RPMS.os

[fedora-us-3-updates]

name=Fedora Core 3 Updates — Fedora US mirror

baseurl=

http://SERVERNAME/fedora/fedora/$releasever/$basearch/RPMS.updates

In addition to the archive of
configuration /etc/yum.conf, YUM allows you to place files from
configuring repositories in the /etc/yum.pos.d/ directory. In this directory
The settings for each repository are listed.

You can add
extra repositories or “beta-test” software repositories in the repository list of
YUM.

Some yum commands:

• yum list: List all available packages;
• yum check-update or yum list updates: Checks if there are packages available for an update;
• yum update: Update your system;
• yum Install: installs a specific package and its dependencies; yum
• removes <package (s) & gt;: Removes a specific package
• yum info : Shows basic information for a given package.

See the examples:

To install a
package:

# yum install postgresql

Resolving Dependencies

Install 2 Package (s)

Is this ok [Y/n]: and

Package (s) data still to download: 3.0 M

(1/2): postgresql-9.0.4-5.fc15.x86_64.rpm ; | 2.8 MB 00:11

(2/2): postgresql-libs-9.0.4-5.fc15.x86_64.rpm | 203 kB 00:00

——————————————————————————————

Total & nbsp; 241 Kb/s | 3.0 MB 00:12

Running Transaction

Installing: postgresql-libs-9.0.4-5.fc15.x86_64

1/2

Installing: postgresql-9.0.4-5.fc15.x86_64 2/2

Complete!

To update installed packages:

# yum update

Plugins loaded: priorities, update-motd, upgrade-helper

amzn-main/latest

; Resolving dependencies

–> Performing transaction verification

—> The aws-cli.noarch package 0:1 .7.5-1.2.amzn1 will be updated

—> The aws-cli.noarch package 0:1 .7.12-1.3.amzn1 will be an update

–> Completed dependency resolution

& nbsp; Resolved dependencies

=============================================================

Package Ark. Repo Tam version.

=======================================================================

Installing:

kernel& nbsp; x86_64 3.14.34-27.48.amzn1 amzn-updates 16 M

Updating:

; aws-cli noarch 1.7.12-1.3.amzn1 amzn-updates 604 k

Transaction Summary

& nbsp; ======================================================================= Install 1 Package (+4 Dependent packages)

; Upgrade 1 Package

Total download size: 16 M

Is this ok [Y/d/n]:

To remove a package:

# yum remove postgresql

Resolving Dependencies

—> Package postgresql.x86_64 0:9 .0.4-5.fc15 will be erased

Is this ok [Y/n]: and

Running Transaction

Erasing: postgresql-9.0.4-5.fc15.x86_ 64 1/1

Removed:

postgresql.x86_64 0:9 .0.4-5.fc15

Complete!

To search for all packages with the word
“firefox”:

# yum search Firefox

Loaded plugins: langpacks, soon, refresh-packagekit

============== N/S Matched: Firefox ==========================

firefox.x86_64: Mozilla Firefox Web browser

gnome-do-plugins-firefox.x86_64: gnome-do-plugins for Firefox

Mozilla- firetray-firefox.x86_64: System tray extension for firefox

mozilla-adblockplus.noarch: Adblocking extension for Mozilla Firefox

mozilla-noscript.noarch: JavaScript list extension for Mozilla Firefox

Name and summary matches only, use “search all” for everything.

To obtain information
about a particular package:

# yum info mysql

yum info mysql

Plugins loaded: priorities, update-motd, upgrade-helper

newrelic & nbsp; & nbsp; 59/59

Installed packages

Name: mysql

Architecture & nbsp;: noarch

Version: 5.5

Release: 1.6.amzn1

Size: 0.0

Repo: installed

From repository: amzn-main

Summary: MySQL meta package

URL: http://www.mysql.com

License: GPLv2 with exceptions

Description: MySQL is a multi-user, multi-threaded SQL database server. MySQL is a

: client/server implementation consisting of a server daemon (mysqld)

: and many different client programs and libraries. The base package

: contains the standard MySQL client programs and generic MySQL files.

To view all available packages on
yum repository:

# yum list

Installed packages

GeoIP.x86_64 1.4.8-1.5.amzn1 & nbsp; @amzn -main

GeoIP-Devel.x86_64 1.4.8-1.5.amzn1 @amzn -main

Pyyaml.x86_64& nbsp; 3.10-3.6.amzn1 installed

acl.x86_64 & nbsp; 2.2.49-6.9.amzn1 installed

acpid.x86_64 1.0.10-2.1.6.amzn1 installed

alsa-lib.x86_64 1.0.22-3.9.amzn1 installed

apr.x86_64 1.5.0-2.11.amzn1 @amzn -updates

(…)

To find out what package a particular file is
belongs to:

# yum provides /etc/sysconfig/nfs

Plugins loaded: priorities, update-motd, upgrade-helper

1:nfs-utils-1.2.3-39.15.amzn1.x86_64: NFS utilities and supporting clients and daemons for the kernel NFS server

Repo: amzn-main

Result from:

File name: /etc/sysconfig/nfs

To find out which repositories are active in
YUM:

# yum replist

repo id repo name status

amzn-main/latest AMZN-Main-Base 5.019

amzn-updates/latest AMZN-Updates-Base 1.085

newrelic/x86_64 & nbsp; New Relic packages 59

repolist: 6,163

Yumdownloader

Use:

# yumdownloader

The yumdownloader command does the
downloading RPM files from the YUM repositories. It is useful for you to download the
packages for later installation, or when installing packages in several
machines, without the need to download the same package several times.

Example:

$ yumdownloader httpd24

amzn-main/latest | 2.1 kB 00:00

amzn-updates/latest | 2.3 kB 00:00

httpd24-2.4.10-15.58.amzn1.x86_64.rpm & nbsp; | 1.3 MB 00:00

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