Added rdiff-backup-statistics manual page

git-svn-id: http://svn.savannah.nongnu.org/svn/rdiff-backup@728 2b77aa54-bcbc-44c9-a7ec-4f6cf2b41109

trunk/rdiff-backup/rdiff-backup-statistics

@@ -45,7 +45,8 @@ def parse_args():
 
 	if len(args) != 1:
 		sys.exit("Usage: %s [--begin-time <time>] [--end-time <time>] "
-				 "[--minimum-ratio <float>] [--null-separator] <backup-dir>"
+		   "[--minimum-ratio <float>] [--null-separator] <backup-dir>\n\n"
+		   "See the rdiff-backup-statistics man page for more information."
 				 % (sys.argv[0],))
 
 	Globals.rbdir = rpath.RPath(Globals.local_connection,

trunk/rdiff-backup/rdiff-backup-statistics.1

+.TH RDIFF-BACKUP-STATISTICS 1 "DEC 2005" "Version 1.1.5" "User Manuals" \" -*- nroff -*-
+.SH NAME
+rdiff-backup-statistics \- summarize rdiff-backup statistics files
+.SH SYNOPSIS
+.B rdiff-backup-statistics
+.BI [--begin-time " time" ]
+.BI [--end-time " time" ]
+.BI [--minimum-ratio " ratio" ]
+.B [--null-separator]
+.I repository
+
+.SH DESCRIPTION
+.BI rdiff-backup-statistics
+reads the matching statistics files in a backup repository made by
+.B 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
+.IR 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.
+
+.SH OPTIONS
+.TP
+.BI --begin-time " time"
+Do not read statistics files older than
+.IR time .
+By default, all statistics files will be read.
+.TP
+.BI --end-time " time"
+Do not read statistics files newer than
+.IR time .
+By default, all statistics files will be read.
+.TP
+.BI --minimum-ratio " ratio"
+Print all directories contributing more than the given ratio to the
+total.  The default value is .05, or 5 percent.
+.TP
+.B --null-separator
+Specify that the lines of the file_statistics file are separated by
+nulls (\\0).  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.
+
+.SH 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.
+
+.SH AUTHOR
+Ben Escoto <ben@emerose.org>, based on original script by Dean Gaudet.
+
+.SH SEE ALSO
+.BR rdiff-backup (1),
+.BR python (1).
+The rdiff-backup web page is at
+.IR http://rdiff-backup.nongnu.org/ .