

Yum comand also list all the installed packages on your system like below. If you want to get a list of packages installed from a particular repository, rpm cannot help you. The rpm command does not provides the notion of repository. Following command queries all installed packages on your system. Using RPM command, it is easiest way to list all installed packages on CentOS or RHEL via this command. In this article I will provide you four method to list all installed packages on CentOS or RHEL system. In different circumstances, you may simply need to know what packages has been installed on server from a specific third party repository Likewise when you are trying to relocate your old Linux server to a newly introduced fresh OS release, you have to monitor already installed packages list. When you need to make another server which has the very same set up as any current server X, you have to discover what bundles or packages have been introduced on server X.
