Binary package “hdup” in ubuntu precise
Filesystem duplicator and backup
hdup is a backup utility with the following characteristics:
remote backups (move the backup to another machine); encrypted backups;
no obscure format for the backups; compression (gzip/bzip or none);
simple to use.
The source also includes two manpages, one for hdup itself and the other
for the configuration file. It should be fairly obvious how to use hdup.