How do you download a file from site to folder for backup?

[iBuddy]

Let's say I want to backup all my images and I made a way to save the images as a variable:

$SaveImage = "http://www.domain.com/images/save.jpg";

Now what command do I use to use that variable $SaveImage to copy from just using the variable to a folder path say /home/account/public_html/backup/ ?

Anyone?

[bogu]

copy