Linux package management

Yum

It it a default package management in the following and many other RPM-based Linux distributions:

• Amazon Linux AMI
• Red Hat Enterprise Linux
• Fedora
• CentOS

Usage

• System update

sudo yum update

• Install package

sudo yum install nagios

• Package description

$ yum info nagios
Loaded plugins: priorities, update-motd, upgrade-helper
Installed Packages
Name        : nagios
Arch        : x86_64
Version     : 3.5.1
Release     : 1.6.amzn1
Size        : 5.3 M
Repo        : installed
From repo   : amzn-main
Summary     : Nagios monitors hosts and services and yells if somethings breaks
URL         : http://www.nagios.org/
License     : GPLv2
Description : Nagios is a program that will monitor hosts and services on your
            : network.  It has the ability to send email or page alerts when a
            : problem arises and when a problem is resolved.  Nagios is written
            : in C and is designed to run under Linux (and some other *NIX
            : variants) as a background process, intermittently running checks
            : on various services that you specify.
            :
            : The actual service checks are performed by separate "plugin" programs
            : which return the status of the checks to Nagios. The plugins are
            : available at http://sourceforge.net/projects/nagiosplug.
            :
            : This package provides the core program, web interface, and documentation
            : files for Nagios. Development files are built as a separate package.