• dnf caches information and databses to speed up performance. To remove cached information:
  dnf clean [ packages | metadata | expire-cache | rpmdb | plugins | all ]
  You can also toggle use of a particular repo on or off by changing the value of enabled, or using the –disablerepo {repo} and ** –enablerepo {repo}** options.
  
• dnf replaced yum during the RHEL/CentOS 7 to 8 transition.
• dnf queries:
  • To search for a package with a keyword:
    dnf search {keyword}
    
  • To display information about a package:
    dnf info {package}
    
  • To list packages installed, available, or updates:
    dnf list [installed | updates | available ]
    
  • To show information about package groups installed:
    dnf grouplist
    
  • To show information about a package groups:
    dnf groupinfo {package}
    
  • To show owner of the package for a file:
    dnf provides {directory}
    
  • To install:
    sudo dnf install {package}
    
  • To install locally:
    sudo dnf localinstall {package}
    
  • To install a specific software group from a repository:
    sudo dnf groupinstall {package}
    
  • To remove a package:
    sudo dnf remove {package}
    
  • To update a package:
    sudo dnf update {package}
    
  • List dnf plugins:
    sudo dnf list "dnf-plugin*"
    
  • List of enabled repos:
    sudo dnf repolist
    
  • Interactive shell which to run multiple dnf:
    sudo dnf shell {file}
    where file is the list of commands.
  • Only download the package with the flag –downloadonly
  • Clean up locally stored files and metadata:
    sudo dnf clean [packages|metadata|expire-cache|rpmdb|plugins|all]
    
• zypper: serves the same function as dnf for OpenSUSE.