Display List of updated software ( Security fix)
yum list updates
Or
yum check-update
Patch up system by applying all updates
yum update
List all installed packages
rpm -qa
How to find a perticular installed packages( httpd)
rpm -qa | grep httpd
How to look update for specific packages
yum update {package-name-1}
To check for and update httpd package, enter:
yum update httpd
How to install packages by yum
yum install package-name
example : yum install httpd
How to exclude package name from update
yum --exclude=packagename* update
How to check for yum updates automatically by bash script:
http://fosiul.co.uk/index.php/2009/08/bash-script-to-check-for-automatic-yum-updates/
Will be continue….