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rdiff(1) General Commands Manual rdiff(1) NAME rdiff - compute and apply signature-based file differences SYNOPSYS rdiff [options] signature old-file signature-file rdiff [options] delta signature-file new-file delta-file rdiff [options] patch old-file delta-file new-file USAGE You can use rdiff to update files, much like rsync does. However, unlike rsync, rdiff puts you in control. There are three steps to updating a file: signature, delta, and patch. Use the signature subcommand to generate a small signature-file from the old-file. Use the delta subcommand to gen- erate a small delta-file from the signature-file to the new-file. Use the patch subcommand to apply the delta-file to the old-file to regenerate the new-file. DESCRIPTION In every case where a filename must be specified, - may be used instead to mean either standard input or standard output as appropriate. Be aware that if you do this, you'll need to terminate your options with -- or rdiff will think you are passing it an empty option. RETURN VALUE 0 for successful completion, 1 for environmental problems (file not found, invalid options, IO error, etc), 2 for a corrupt file and 3 for an internal error or unhandled situation in librsync or rdiff. SEE ALSO librsync(3) AUTHOR Martin Pool <mbp@sourcefrog.net> The original rsync algorithm was discovered by Andrew Tridgell. rdiff development has been supported by Linuxcare, Inc and VA Linux Sys- tems. $Date$ rdiff(1)
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