How To's Tutorials

Yum Command - RPM Based Package Manager with Practical Examples


What is Yum …... ?


YUM Stands for  Yellowdog Updater Modified. YUM is an interactive, rpm based, package manager. Yum is available in different  Linux OS Like Redhat , Centos , Fedora etc. It can also  perform  installation  of  new packages,  removal of old packages and perform queries on the installed and/or available packages among many other commands/services.


Yum Solves the Package dependencies problems which is generally found in RPM Command .


Syntax :  yum [options] [command] [package ...]


Example :1 Install a Package (e.g Thunderbird)



In above command, to install Thunderbird we have press Y for confirmation,  so to avoid this we can pass “y” option in yum command so that it automatically confirm and install the package.


[root@master ~]# yum -y install thunderbird


Example:2  Remove a Package (e.g thunderbird)



Example:3  Check whether any updates are available for your system or not .


Below Command will  list no of  the packages to be updated


[root@master ~]# yum check-update


To update a particular package to a specific version , use  “update-to” option in yum command.


Example:4  To display information about a specific package(e.g httpd) use below command



To List the  information about available packages , example



Example:5 Search  packages when we  know something about the package but aren’t sure of  it’s  name



Example:6  To find out which package provides a specific  file like “/etc/inittab”



Example:7 To Install all the packages of specific Group, use “groupinstall” option.


To install all packages of “Development tools” :


[root@master ~]# yum groupinstall 'Development tools'


To list  all the  available groups from all yum repos.


[root@master ~]# yum grouplist


Example:8 To view history of a package what had happened  in  past  transactions like when it was installed , upgraded and removed.


Syntax :  # yum history <info/list/packages-list/packages-info/summary>  package-Name





Example:9  View and install security updates on your system. First Install the security plugin using below yum command


[root@master ~]# yum install yum-security


To list all Available Security Updates


[root@master ~]# yum list-security


Ashutosh Sinha on, 2013-05-03 18:48:06
this is very useful for me to collect more information about Linux commands....
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