RPM intro

 RPM [Red Hat Package Manager]

List all installed packages
# rpm -qa            

Check configuration file
# rpm -qc vsftpd       

Query the Related Documentation in Directory
# rpm -qd vsftpd       

List files in package
# rpm -ql vsftpd       

Check scripts on the package
# rpm -q --scripts vsftpd   

Install a package named vsftpd
# rpm -ivh vsftpd       

Install package without checking any dependencies
# rpm -ivh vsftpd 20.198.20.16 --force --nodepes  

To check all service start/stop at various run levels
# chkconf --list