I already published a script that sets a random image file as desktop wallpaper. It has only one downside: you have to run it every time you want to rotate your wallpaper.
However GNOME since 2.28 allows assigning a slide show as wallpaper by providing an image list in XML format. There you can specify the order and duration for each image. Moreover, you can even define a transition from one image to another.
So I decided to create a simple script that generates an XML file for a given set of images and, optionally, sets that as the current wallpaper. It requires GNOME 3+ or Ubuntu (11.10 or later).
You can download the latest version at the script page on my website.
The script is quite flexible. Use it as follows:
generate-wallpaper-xml [options] pictures_dir xml_file
options- Any combination of the following:
-d <number>- Override default display duration (1795 seconds, ca. half an hour)
-s <mode>- Sort the files according to
mode, whose values are:
name- Sort by file path and name
shuffle- Randomize file order
-t <number>- Override default transition duration (5 seconds). If 0, no transition is used
-v- Verbose output
-w- Set the generated XML file as current wallpaper
pictures_dir- Path to directory with pictures
xml_file- Path to the output XML file
generate-wallpaper-xml ~/Pictures ~/Pictures/wallpapers.xml
Creates the file
Picturessubdirectory (in the user’s home directory) from picture files from the same subdirectory.
generate-wallpaper-xml -w ~/Pictures ~/Pictures/wallpapers.xml
The same as above, but additionally sets the generated file as the current wallpaper.
generate-wallpaper-xml -w -d 600 -t 0 ~/Pictures ~/Pictures/wallpapers.xml
The same as above, plus sets display duration of each file to 10 minutes (600 seconds), and disables transitions between images.
generate-wallpaper-xml -w -s shuffle -d 600 -t 0 ~/Pictures ~/Pictures/wallpapers.xml
The same as above, plus shuffles the file list so that they are ordered randomly.