.TH RDIFFDIR 1 "$reldate" "Version $version" "User Manuals" \"  -*- nroff -*-
.SH NAME
rdiffdir \- compute and apply signatures and diffs to directories
.SH SYNOPSIS
.B rdiffdir
.BI [ options ]
.B sig[nature]
.I basis_dir signature_file

.B rdiffdir
.BI [ options ]
.B delta
.I signature_file new_dir delta_file

.B rdiffdir
.BI [ options ]
.B patch
.I basis_dir delta_file

.B rdiffdir
.BI [ options ]
.B tar
.I basis_dir tar_file

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

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

.SH OPTIONS
.TP
.BI "--write-sig-to " sigfile
This option is only used in
.B delta
and
.B 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
.B same
data.

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

.SH SELECTION OPTIONS

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

.SH BUGS
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.

.SH AUTHOR
Ben Escoto <bescoto@stanford.edu>

.SH SEE ALSO
.BR duplicity (1),
.BR python (1),
.BR rdiff (1),
.BR rdiff-backup (1).