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*list all device addresses on a port
**<code>arp -i bridge0 -a</code>
=Maintenance=
*backup your raspberry pi.
*remove the sd card and insert in your computer.
*check what drive it is. on os x:
**<code>df</code>
**you should see something like ''/dev/disk2s1'', figure out which is your hard drive and which is the SD card.
*unmount the card.
**<code>diskutil unmount /dev/disk2s1</code>
*duplicate the disk to your hard drive. replace the second argument, ''of=/Volumes/Cistern/RaspberryPi/...'' with the path and filename where you want to backup the image.
**<code>sudo dd if=/dev/rdisk2 of=/Volumes/Cistern/RaspberryPi/wheezy-20130522-backup.img bs=1m</code>
**you can hit '''Ctrl-t''' on your keyboard to see stats about the copy in progress.
*when it is done. eject the disk.
**<code>diskutil eject /dev/rdisk2</code>
=Configuration=