Description of problem: You used to be able to do `yum-config-manager --disable rpmfusion*` to disable all repos that start with "rpmfusion". Now `dnf config-manager --set-disabled rpmfusion*` doesn't work. Compare https://docs.fedoraproject.org/en-US/Fedora/17/html/System_Administrators_Guide/sec-Managing_Yum_Repositories.html with https://docs.fedoraproject.org/en-US/Fedora/26/html/System_Administrators_Guide/sec-Managing_DNF_Repositories.html to see for yourself. Please add some sort of batch mechanism like that back in.
I tested config-manager command on my computer (I have dnf-0:2.7.2-1.git.61.4812d55.fc26.noarch). I can't reproduce the problem. It is working. But: 1. please use \ before globs or use '. Examples: dnf config-manager --set-disabled rpmfusion\* dnf config-manager --set-disabled 'rpmfusion*' 2. I see "docs-old" in documentation URL you use. Try another documentation. Eg. https://dnf-plugins-core.readthedocs.io/en/latest/config_manager.html In new documentation is description: <repo> Display / modify specified repository. If not specified display / modify main DNF configuration. Repositories can be specified using globs.