Yum
From Leo's Notes
This page was last edited on 24 February 2017, at 19:31.
The Yum package manager has been replaced by DNF.
Excluding Packages
To exclude a package from being installed, use the -x option or add to the exclude attribute in the /etc/yum.conf file.
The list is separated by a space and supports wildcards. For example:
exclude=cpsc-uml pack* package3