krita
Krita is a sketching and painting program designed for digital artists.
TLDR
Start krita
$ krita
Start without the splash screen
$ krita --nosplash
Open the specified files
$ krita [path/to/image1 path/to/image2 ...]
Start with the specified workspace (Animation)
$ krita --workspace [Animation]
Start in the fullscreen mode
$ krita --fullscreen