YUM Command in Linux

Full form of YUM is Yellowdog Updater Modified. It is default package manager, mainly use for installation work.

Synopsis

yum [options] [command] [package]  
yum -y install php

Here
  -Y is option (-y=yes)
  install is command
  php is package

 Install PHP

$ yum install php

Update PHP

yum update php

Remove PHP

$ yum remove  php

Search for a package to be installed

$ yum search php

Show information about package

$ yum info php

Show all available package

$ yum list | less 

Show all installed package

$ yum list installed
$ yum list installed | less    

Install a new software group

$ yum groupinstall 'DNS Server'

Remove new software group

$yum groupremove 'DNS Server'  

Update software group

$ yum groupupdate 'DNS Server' 

List all software group

$ yum grouplist