Binary package “rsbackup” in ubuntu bionic

rsync-based backup utility

 Backups are stored as complete filesystem trees on a (perhaps
 external) hard disk. Multiple backups use hard links between
 identical files to save space.
 Backups may be taken from multiple machines (over SSH) and stored to
 multiple disks.
 Backups may be made automatically, i.e. without relying on the
 operator to remember to make a backup.