For example,

rdup -c list ~/Documents | rdup-gzip | rdup-mirror -c -b /tmp/storage

Note the -c option for rdup-mirror.

-c

This option is ignored, rdup-gzip always works on the files' content. This "feature" was added because all rdup-util scripts have such an option.

-d

Decompress the files.

-V

Show the version.