Apex Code Development You need to sign in to do that
Don't have an account?
Request and Download weekly data export
handy tool i've written to request and later download the weekly backups. I put this in my scheduled tasks for Wed night and Friday morning, first time requests the backup, second fetches it.
it's not really using sforce, but it sure is handy, you will have to modify it to locate the backup file to your own network name space.
It could easliy be modified to use sforce to get the session id, because it arrives at the frontdoor.jsp early on. This depends on the contents of the web pages, so it's bound to break someday... (aka: scraping)
I put it here because it's written in perl
have fun 
Ron Hess