Hi
I don't use it myself but to display it on wallpaper you may like to install conky from the Synaptic package manager
There is also gkrellm which is more of a widget or icon that sits on your wallpaper.
conky embeds itself into the wallpaper.
You can see a quick comparison of images here if interested
http://lifehacker.com/5847676/the-best-s...-for-linux
I don't use it myself but to display it on wallpaper you may like to install conky from the Synaptic package manager
There is also gkrellm which is more of a widget or icon that sits on your wallpaper.
conky embeds itself into the wallpaper.
You can see a quick comparison of images here if interested
http://lifehacker.com/5847676/the-best-s...-for-linux
Good Luck