how to install gimp in linux mint | Free Photo Editing Software
GIMP (GNU Image Manipulation Program) is a free and open-source raster graphics editor used for image retouching and editing, free-form drawing, converting between different image formats, and more specialized tasks.
GIMP is released under GPLv3+ licenses and is available for Linux, macOS, and Windows.
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commands:-
sudo add-apt-repository ppa:otto-kesselgulasch/gimp
sudo apt-get update
sudo apt-get install gimp