Finding it quite hard to Google this. Between say 9 am and 6pm I want a certain wallpaper to be displayed, and between 6 pm to 12 am I want a different one. So I want it time-specific.
Any way to do this in Ubuntu?
DesktopNova : Click to install
So you add your pictures, and then Check Change wallpaper in intervals.
And there is an indicator for this application.
There is also Desktop Drapes
Besides the wallpaper changers in USC (like Desktop Nova and Desktop Drapes) there is also a script called Sunrise that can do this and you can get it here on deviantart.
Instructions: Copy the file to a new directory. Extract the files. Inside a terminal, `cd` into the folder you created. Run "sh ./install" (without the quotes)
It has an XML file with the images and in it also a timer (in seconds).
By default it uses the images shown on this blog. Or course using a script is not as secure as using a package but it's very lightweight.