yum package management

yum is used to install, update, delete packages for centos. It will do dependencies analysis and auto installed required packages.

1.update all packages installed in the system
#yum update

2.install single package
#yum install nano
#yum install vim

3.remove single package
#yum remove nano

4.upgrade single package
#yum upgrade nano

5.query information single package
#yum info nano

6.query program in which package
#yum provides */nano

It will first download, etract and install fileslist.db and return the result of query

7. list a collection of  packages  like web server, mysql database server
#yum grouplist

8.install group software like MySQL Database Server
#yum groupinstall "MySQL Database Server" "MySQL Database client"