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Full Discussion: Compare multiple files with multiple number of columns
Top Forums Shell Programming and Scripting Compare multiple files with multiple number of columns Post 302663165 by jacobs.smith on Wednesday 27th of June 2012 04:04:12 PM
Old 06-27-2012
Hi tukuyomi,

Please pardon me if I wasn't clear.

Here you go.

1. I want to match the first four columns of my file1 to the first four columns of file2, and if there is any match, I want the matching records from input file2 whose first four columns match to the input file1. Also, I want the other records from input file2, even though there is no match to input file 1. This is the reason why you are seeing output == cat input file2.

2. My four columns are

Code:
abcd 123 198 xyz1:0909090-0909091

These are separated by spaces.

3. Also, I would really appreciate if you can write into another file, the unmatched records from input file1 which would contain the following record

Code:
prem 9 112 xyz5:97-1134

 

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LEARN ABOUT DEBIAN

empty-page

EMPTY-PAGE(1)							 ExactImage Manual						     EMPTY-PAGE(1)

NAME

       empty-page - empty page detector of the ExactImage toolkit

SYNOPSIS

       empty-page [option...] {-i | --input} input-file

       empty-page {-h | --help}

DESCRIPTION

       ExactImage is a fast C++ image processing library. Unlike many other library frameworks it allows operation in several color spaces and bit
       depths natively, resulting in low memory and computational requirements.

       empty-page counts dark pixels of a black and white image and decides with a threshold whether the page is most probably empty, and thus can
       be removed from the image processing stream.

OPTIONS

       -i file, --input file
	   Read image from the specified file.

       -m n, --margin n
	   Set width of border margin to skip. For speed reasons, the margin has to be a multiple of 8. The default is 16.

       -p x, --percentage x
	   Set fraction of permissible dark pixels. The default is 0.05 (5%).

       -h, --help
	   Display help text and exit.

EXAMPLES

	   $ empty-page -i test.tif
	   The image has 75461 dark pixels from a total of 1060992 (7.11231%).
	   non-empty

EXIT STATUS

       The exit status is 0 if the image is mostly white, 1 otherwise.

SEE ALSO

       exactimage(7)

AUTHORS

       Jakub Wilk <jwilk@debian.org>
	   Wrote this manual page for the Debian system.

       http://www.exactcode.de/site/open_source/exactimage/
	   This manual page incorporates texts found on the ExactImage homepage.

COPYRIGHT

       This manual page was written for the Debian system (and may be used by others).

       Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 or (at
       your option) any later version published by the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL-2.

empty-page							    09/09/2013							     EMPTY-PAGE(1)
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