rdiff(1) [debian man page]

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 basis-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.

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@samba.org>

       The original rsync algorithm was discovered by Andrew Tridgell.

       rdiff development has been supported by Linuxcare, Inc and VA Linux Systems.

							   $Date: 2002/01/25 21:25:34 $ 						  rdiff(1)

RDIFF-BACKUP(1) 						   User Manuals 						   RDIFF-BACKUP(1)

NAME

       rdiff-backup-statistics - summarize rdiff-backup statistics files

SYNOPSIS

       rdiff-backup-statistics [--begin-time time] [--end-time time] [--minimum-ratio ratio] [--null-separator] [--quiet] repository

DESCRIPTION

       rdiff-backup-statistics	reads the matching statistics files in a backup repository made by rdiff-backup and prints some summary statistics
       to the screen.  It does not alter the repository in any way.

       The required argument is the pathname of the root of an rdiff-backup repository.  For instance, if you ran "rdiff-backup in out", you could
       later run "rdiff-backup-statistics out".

       The  output  has  two  parts.  The first is simply an average of the all matching session_statistics files.  The meaning of these fields is
       explained in the FAQ included in the package, and also at http://rdiff-backup.nongnu.org/FAQ.html#statistics.

       The second section lists some particularly significant files (including directories).  These files are either contain a lot of  data,  take
       up increment space, or contain a lot of changed files.  All the files that are above the minimum ratio (default 5%) will be listed.

       If  a  file  or directory is listed, its contributions are subtracted from its parent.  That is why the percentage listed after a directory
       can be larger than the percentage of its parent.  Without this, the root directory would always be the largest, and  the  output  would	be
       boring.

OPTIONS

       --begin-time time
	      Do  not  read  statistics  files older than time.  By default, all statistics files will be read.  time should be in the same format
	      taken by --restore-as-of.  (See TIME FORMATS in the rdiff-backup man page for details.)

       --end-time time
	      Like --begin-time but exclude statistics files later than time.

       --minimum-ratio ratio
	      Print all directories contributing more than the given ratio to the total.  The default value is .05, or 5 percent.

       --null-separator
	      Specify that the lines of the file_statistics file are separated by nulls ().  The default is to assume  that  newlines  separate.
	      Use this switch if rdiff-backup was run with the --null-separator when making the given repository.

       --quiet
	      Suppress printing of the "Processing statistics from session..."	output lines.

BUGS

       When aggregating multiple statistics files, some directories above (but close to) the minimum ratio may not be displayed.  For this reason,
       you may want to set the minimum-ratio lower than need.

AUTHOR

       Ben Escoto <ben@emerose.org>, based on original script by Dean Gaudet.

SEE ALSO

       rdiff-backup(1), python(1).  The rdiff-backup web page is at http://rdiff-backup.nongnu.org/.

Version 1.2.8							    March 2009							   RDIFF-BACKUP(1)