Yes , it is true you can download tons of gnome wallpapers with a command . As you know even though gnome-look.org has a large collection of wallpapers , it doesnot make it easy to download a lot of stuff . So how we can do it ? download with ftp  .Here is a complete step by step procedure to download gnome images .

1. Fire up your terminal and make a directory .

$ mkdir wallpapers

2 . Connect to ftp.gnome.org

$ ftp ftp.gnome.org

3. You need to enter the username and password , ”anonymous” will be your default username and there needs no password .

4.Explore the contents of the server

$ cd /pub/GNOME/teams/art.gnome.org/backgrounds

5. Now , we need to turn off the prompt mode .

$ prompt off .

5. Now we can download all the stuff  of your resolution with mget  providing your resolution . Here i assume your resolution to be 800 *600.

$ mget *800*600.jpg

You have started downloading .Feel free to  post your comments .