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Top Forums UNIX for Dummies Questions & Answers Trouble Assigning AWK variables Post 302577995 by Corona688 on Wednesday 30th of November 2011 12:40:34 PM
Old 11-30-2011
You can simplify that a lot by knowing what statements before and after a code block do in awk.

Code:
awk -v ratio=$ratio '$1=="variableStep" { $2 *= ratio } 1

The $1=="variableStep" before the code block tells it to run { $2 *= ratio } only when $1=="variableStep".

The 1 after the code block tells it to print every single line (even when $2 *= ratio isn't run). You could put any logical statement there but we put '1' so it's always true.
 

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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)
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