Updating using yum

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It allows you to install, update, and remove software on your computer running the RHEL/Fedora operating system. You can install yum on Debian-based systems with the command On the phone: (206) 988-5858 © 2009,

yum is a command-line utility which requires a network connection to a yum server, either locally or on the public Internet. Often, you may want to add more software sources, known as repositories. Content may be reprinted and/or distributed as long as this document remains unaltered and soundtraining.net, any named author, and credited as the source.

This allows you to search for information from the various metadata available about packages. It will output the packages which match the most terms first followed by the next highest number of matches, etc.

Specifically yum search looks at the following fields: name, summary, description, url.

The yum (Yellowdog Updater Modified) utility is included with RHEL/Fedora/Cent OS for the management of software.

It is an interactive, automated system for maintaining systems using RPM.

We can exclude or disable certain package updates from the any third party repositories. [main] cachedir=/var/cache/yum/$basearch/$releasever keepcache=0 debuglevel=2 logfile=/var/log/exactarch=1 obsoletes=1 gpgcheck=1 plugins=1 installonly_limit=5 bugtracker_url= category=yum distroverpkg=centos-release # This is the default, if you make this bigger yum won't see if the metadata # is newer on the remote and so you'll "gain" the bandwidth of not having to # download the new metadata and "pay" for it by yum not having correct # information. important, to have correct metadata, for distributions like # Fedora which don't keep old packages around.

YUM (Yellowdog Updater Modified) is an open source command-line as well as graphical based package management tool for RPM (Red Hat Package Manager) based Linux systems.

It allows users and system administrator to easily install, update, remove or search software packages on a systems.

The YUM utility is used install, upgrade, remove rpm based packages from the distribution repositories in systems.

But sometime we don’t want to do update certain packages such as Apache Server (HTTP), My SQL, PHP and other major applications, because if such updates may harm currently running web application on server or you may stop updates till the application gets patched with new updates.

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