DNF Fork Of Yum

DNF aka Dandified YUM is a next generation Package Manager for RPM based Distribution. It was first introduced in Fedora 18 and it has replaced YUM utility in recent release of Fedora 22.


DNF Installation

To install DNF on RHEL/CentOS systems, you need to first install and enable epel-release repository.

# yum install epel-release
OR
# yum install epel-release -y
 
 
Next, install DNF package using yum command from epel-release repository.

# yum install dnf
 
 

1. Check DNF Version

# dnf --version
 

2. List Enabled DNF Repositories

# dnf repolist

 

3. List all Enabled and Disabled DNF Repositories

 # dnf repolist all
 

4. List all Available and Installed Packages using DNF

 # dnf list


 




 


5. List all Installed Packages using DNF


 


 # dnf list installed 


  





6. List all Available Packages using DNF


  # dnf list available 



 



7. Search for a Package using DNF


 # dnf search nano


 


 



8. See what Provides a file/sub-package?


 # dnf provides /bin/bash


 


 



9. Get Details of a Package using DNF








 # dnf info nano


 


 





10. Install a Package with DNF



 


# dnf install nano



 




 





 


 



11. Updating a Package using DNF


# dnf update systemd


 


 



12. Check for System Updates using DNF


# dnf check-update


 


 



13. Update All System Packages using DNF


 # dnf update
OR
# dnf upgrade


 


 



14. Remove/Erase a Package using DNF


# dnf remove nano
OR
# dnf erase nano


 


 



15. Remove Orphan Packages using DNF


# dnf autoremove


 


 



16. Remove Cached Packages using DNF


# dnf clean all


 


 



17. Get Help on Specific DNF Command


# dnf help clean


 


 



18. List all DNF Commands and Options


# dnf help


 


 



19. View History of DNF


# dnf history


 


 



20. List all Group Packages


# dnf grouplist


 


 



21. Install a Group Package using DNF 


 


# dnf groupinstall 'Educational Software' 







22. Update a Group Package


# dnf groupupdate 'Educational Software'


 


 


 



23. Remove a Group Package


# dnf groupremove 'Educational Software'


 


 



24. Install a Package from Specific Repository


# dnf --enablerepo=epel install phpmyadmin


 


 



25. Synchronize Installed Packages to Stable Release


# dnf distro-sync


 


 



26. Reinstall a Package


# dnf reinstall nano


 


 



27. Downgrade a Package


# dnf downgrade acpid


 


 



Sample Output


Using metadata from Wed May 20 12:44:59 2015
No match for available package: acpid-2.0.19-5.el7.x86_64
Error: Nothing to do.


 


 

My observation: DNF does not downgraded the package as it is supposed to. It has also been reported as bug.




Conclusion

DNF is the upper state of the end of the art Package
 Manager YUM. It tends to do a lot of processing automatically which is 
not going to be praised by many experienced Linux System Administrator, 
as I believe. As a matter of example:



    

  1. --skip-broken is not recognized by DNF and there is no alternative.
    2. 

  2. There is nothing like ‘resolvedep‘ command however you may run dnf provides.
    3. 

  3. There is no ‘deplist‘ command to find package dependency.
    4. 

  4. You exclude a repo, means the exclusion apply on all operations, 
unlike yum which excludes those repos only at the time of install and 
updates, etc.
    5. 



 



 


 



 


 



 


 



 


 



 


 



 


 



 


 



 


 



 


 



 


 



 


 



 


 



 


 



 


 



 




 





 
















































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