1. Display list of updated software
   1. # yum list updates
2. Patch up system by applying all updates
   1. # yum update
3. List all installed packages
   1. # rpm -qa
   2. # yum list installed
4. Find out if httpd package installed or not
   1. # rpm -qa | grep httpd*
   2. # yum list installed httpd
5. Check for and update specified packages
   1. # yum update {package-name-1}
   2. # yum update httpd
6. Search for packages by name
   1. # yum list {package-name}
   2. # yum list {regex}
   3. # yum list httpd
   4. # yum list perl*
7. Install the specified packages [ RPM(s) ]
   1. # yum install {package-name-1} {package-name-2}
   2. # yum install httpd
8. Remove / Uninstall the specified packages [ RPM(s) ]
   1. # yum remove {package-name-1} {package-name-2}
   2. # yum remove httpd
9. Display the list of available packages
   1. # yum list all
10. Display list of group software
    1. # yum grouplist
11. Install all the default packages by group
    1. # yum groupinstall "Development Tools"
12. Update all the default packages by group
    1. # yum groupupdate "Development Tools"
13. Remove all packages in a group
    1. # yum groupremove "Development Tools"
14. Install particular architecture package
    1. # yum install {package-name}.{architecture}
    2. # yum install mysql.i386
15. Display packages not installed via official RHN subscribed repos
    1. # yum list extras
16. Display what package provides the file
    1. # yum whatprovides /etc/passwd
    2. # yum whatprovides {dependency-1} {dependency-2}