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Top Forums Shell Programming and Scripting Appending different columns of multiple files in awk Post 303005741 by RudiC on Sunday 22nd of October 2017 04:35:06 PM
Old 10-22-2017
Quote:
Originally Posted by looney
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there is no logic inside it. I am just looking a way to append different fields of different files in awk.
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If there's no logics to it, you can't program it. Programming means cast logics into code and apply repeatedly onto structurally identical but contentswise differing data, like everyday's log files, or multiple customer entries in a DB.
All above proposals convert your input data exactly as given into output exactly as in post#1. Why don't you do it in a one off editor session?
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ppmtopgm(1)                                                   General Commands Manual                                                  ppmtopgm(1)

NAME
ppmtopgm - convert a portable pixmap into a portable graymap SYNOPSIS
ppmtopgm [ppmfile] DESCRIPTION
Reads a portable pixmap as input. Produces a portable graymap as output. The output is a "black and white" rendering of the original image, as in a black and white photograph. The quantization formula used is .299 r + .587 g + .114 b. Note that although there is a pgmtoppm program, it is not necessary for simple conversions from pgm to ppm , because any ppm program can read pgm (and pbm ) files automatically. pgmtoppm is for colorizing a pgm file. Also, see ppmtorgb3 for a different way of converting color to gray. And ppmdist generates a grayscale image from a color image, but in a way that makes it easy to differentiate the original colors, not necessarily a way that looks like a black and white photograph. QUOTE
Cold-hearted orb that rules the night Removes the colors from our sight Red is gray, and yellow white But we decide which is right And which is a quantization error. SEE ALSO
pgmtoppm(1),ppmtorgb3(1),rgb3toppm(1),ppmdist(1),ppm(5),pgm(5) AUTHOR
Copyright (C) 1989 by Jef Poskanzer. 10 April 2000 ppmtopgm(1)
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