GIMP, or GNU Image Manipulation Program, is an open-source program used for many different purposes. Its primary function centers around graphic design and editing images and transcoding between various image formats, free-form drawing, and many more specialized tasks. GIMP is released under GPL-3.0-or-later license and is available for Linux, macOS, and Microsoft Windows.
In the following tutorial, you will learn to install the GIMP on CentOS 9 Stream using one of two methods: dnf package manager, or flatpak package manager, along with some tips for maintaining or removing GIMP in the future.
Table of Contents
Situational – Remove DNF Subscription Manager
For users that have just installed CentOS Stream, you may encounter issues with “This system is not registered with an entitlement server. You can use subscription-manager to register,” then use the following command to remove the subscription manager.
sudo dnf erase subscription-manager -y
As mentioned above, all the subscription-based lockouts have been removed.
Update CentOS Stream
Before you begin, make sure your system is up-to-date to avoid any conflicts during the installation, and for good practice, use the terminal command as follows.
sudo dnf upgrade --refresh
Install GIMP – DNF Method
The first option is to use the default DNF repository. This is a stable and secure version and is most recommended to install over any other package manager but can be outdated compared to Flatpaks alternative option that is usually up-to-date if not further ahead of even CentOS Stream packages.
First, execute the following dnf install command.
sudo dnf install gimp -y
Install GIMP – Flatpak Method
The second option is to use the Flatpak package manager that most often is natively installed on your CentOS Stream workstation. The benefit of Flatpaks is that they can often be ahead of a version or two from the DNF appstream, depending on the release cycle/updates of the software and the Flatpak package maintainer.
First, re-install Flatpak if you have removed the package manager previously.
sudo dnf install flatpak -y
Next, you need to enable Flatpack using the following command in your terminal:
sudo flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
For users re-installing Flatpak for the first time, it is often recommended to reboot your system. Failure to do this can occur with odd issues arising, such as paths not being generated for icons.
SKIP THE REBOOT IF FLATPAK WAS ALREADY INSTALLED.
Now install GIMP using the following flatpak command:
flatpak install flathub org.gimp.GIMP -y
If the above command does not work and you receive the “error: Unable to load summary from remote flathub: Can’t fetch summary from disabled remote ‘flathub’‘ use the following command.
flatpak remote-modify --enable flathub
This will fix the issue.
How to Launch GIMP
Now that you have the GIMP installed, launching can be done in a few ways.
For users with their terminal open, you can launch the application immediately using the following command.
Flatpak users can run from the terminal using the following command.
flatpak run org.gimp.GIMP
However, this isn’t practical, and you would use the following path on your desktop.
Activities > Show Applications > GNU Image Manipulation Program
Once you open GIMP, you will see the first default landing screen.
Congratulations, you have successfully installed GIMP.
How to Update/Upgrade GIMP
Updates should appear in notifications, but if these fail to show sometimes, it is recommended to check using the terminal regardless use one of the following commands to check for updates.
sudo dnf update --refresh
How to Remove (Uninstall) GIMP
Use one of the following commands to suit the original installation method for users who no longer require the paint application.
DNF Remove Method
sudo dnf autoremove gimp
Flatpak Remove Method
flatpak remove --delete-data org.gimp.GIMP -y
Next, run the following command for any leftover clean-ups required, similar to the autoremove command described for the DNF remove example command.
flatpak remove --unused
Comments and Conclusion
Overall, GIMP stands above many other applications of its nature as it offers a great, streamlined workflow which makes it easier for beginners to get started with the application. GIMP also has an easy-to-customize UI that can help accelerate workflows in online digital photography. It is worth a look.