1rdiff(1)                    General Commands Manual                   rdiff(1)
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NAME

6       rdiff - compute and apply signature-based file differences
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SYNOPSYS

9       rdiff [options] signature old-file signature-file
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11       rdiff [options] delta signature-file new-file delta-file
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13       rdiff [options] patch old-file delta-file new-file
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USAGE

16       You  can  use  rdiff  to  update files, much like rsync does.  However,
17       unlike rsync, rdiff puts you in control.   There  are  three  steps  to
18       updating a file: signature, delta, and patch. Use the signature subcom‐
19       mand to generate a small signature-file  from  the  old-file.  Use  the
20       delta subcommand to generate a small delta-file from the signature-file
21       to the new-file. Use the patch subcommand to apply  the  delta-file  to
22       the old-file to regenerate the new-file.
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DESCRIPTION

26       In every case where a filename must be specified, - may be used instead
27       to mean either standard input or standard output  as  appropriate.   Be
28       aware  that  if you do this, you'll need to terminate your options with
29       -- or rdiff will think you are passing it an empty option.
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RETURN VALUE

32       0 for successful completion, 1 for  environmental  problems  (file  not
33       found,  invalid options, IO error, etc), 2 for a corrupt file and 3 for
34       an internal error or unhandled situation in librsync or rdiff.
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SEE ALSO

37       librsync(3)
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AUTHOR

40       Martin Pool <mbp@sourcefrog.net>
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42       The original rsync algorithm was discovered by Andrew Tridgell.
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44       rdiff development has been supported by Linuxcare,  Inc  and  VA  Linux
45       Systems.
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49                                    $Date$                            rdiff(1)