backintime-common binary package in Ubuntu Precise amd64

 Back In Time is a framework for rsync, diff and cron for the purpose of
 taking snapshots and backups of specified folders. It minimizes disk space use
 by taking a snapshot only if the directory has been changed, and hard links
 for unmodified files if it has. The user can schedule regular backups using
 cron.
 .
 This is the common framework for Back In Time. You need to choose a suitable
 front-end for your desktop environment, like backintime-gnome or
 backintime-kde.

Source package