Editor: The release date for Fedora 25 is just around the corner. Since you’ll most likely be messing with its repositories after you’ve installed it, it’s important that you know how to go about it. In the next few paragraphs and the article they lead to, you learn just how to do that.
Your Fedora system gets its software from repositories, or repos. Each of these repos can have any number of software apps available for you to install and use. The official Fedora repos contain thousands of free and open source apps. Some repos may have free or proprietary apps. Some only contain one. You may want to configure software repositories at certain times.
Fortunately, this is easy in Fedora. For instance, you may want to get a package to test and see if it fixes a bug. In that case, you’d want to turn on Fedora’s testing repo. You might want to leave it on to get more packages for testing. Or you might want to turn it off, to stop participating.
Configuring with the command line
To configure repos at the command line, use the dnf command. To see a list of all enabled repos, use this command:
sudo dnf repolist
Read the complete article here.