On Mittwoch 26 November 2008, Andrea Momesso wrote: > I have an usb external disk attached to a machine running > gentoo. > > > I only need this disk once a day, when a cron job mounts it, makes > some > backups, and then umounts > it. > > > > I'd save a lot of electrical power (and I think also disk health) if > I > was able to turn on and off electrical power from the usb > port. >
I would play around with the stuff in /sys/bus/usb
