nitrogen:tldr:8979f
nitrogen: Set the wallpaper with automatic size settings.
$ nitrogen --set-auto ${filename}
try on your machine
The command nitrogen --set-auto ${filename} is used to set the desktop background (also known as wallpaper) using the Nitrogen tool. Nitrogen is a utility for managing the desktop background in X Window System.
Here, ${filename} is a placeholder that should be replaced with the actual path and name of the image file you want to use as the wallpaper.
When the command is executed, Nitrogen will set the specified image file as the desktop background, and also configure it to be automatically set as the background when the system starts or the desktop is refreshed.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.