Provided by: duplicity_0.8.04-2ubuntu1_amd64 bug


       rdiffdir - compute and apply signatures and diffs to directories


       rdiffdir [options] sig[nature] basis_dir signature_file

       rdiffdir [options] delta full_sigtar {incr_sigtar} new_dir delta_file

       rdiffdir [options] patch basis_dir delta_file

       rdiffdir [options] tar basis_dir tar_file

       If signature_file or delta_file are "-", the data will be read from stdin or written to
       stdout as appropriate.


       rdiffdir is supposed to be like rdiff, but can operate on directories.  See rdiff(1) for
       more information.  The syntax is similar.

       Regarding the delta command, the full_sigtar operand is a signature_file written by an
       earlier signature or tar command (the latter using the --write-sig-to option). The
       optional incr_sigtar operands are signature files written by earlier delta commands using
       the --write-sig-to option. This way the Nth invocation of the delta command can parse (and
       extend) the signature chain that has been founded by the first signature or tar command
       with a full signature, and then extended by the subsequent N-1 delta invocations with
       incremental signatures. It is the responsibility of the user to specify the sigtar
       operands in logical increment order.


       --write-sig-to sigfile
              This option is only used in delta and tar modes.  When specified, rdiffdir will
              write a signature of the directory it is processing to sigfile.  The end result
              will be a delta and a new signature calculated over the same data.

       -z, --gzip-compress
              Enable gzip compression and decompression of signature and delta files.


       In signature and delta modes, rdiffdir accepts duplicity-like selection options including
       --exclude, --exclude-filelist, etc.  See the duplicity(1) manual page for more


       Hard links are currently unsupported (they will be treated as non-linked regular files).

       Bad signatures will be treated as empty instead of logging appropriate error message.


       Original Author - Ben Escoto <>

       Current Maintainer - Kenneth Loafman <>

       Continuous Contributors
              Edgar Soldin, Mike Terry

       Also we'd like to thank everybody posting issues to the mailing list or on launchpad,
       sending in patches or contributing otherwise. Duplicity wouldn't be as stable and useful
       if it weren't for you.

       A special thanks goes to, a Cloud Storage provider with explicit support for
       duplicity, for several monetary donations and for providing a special "duplicity friends"
       rate for their offsite backup service.  Email for details.


       duplicity(1), python(1), rdiff(1), rdiff-backup(1).