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Full Discussion: [Solved] awk oddity
Top Forums UNIX for Dummies Questions & Answers [Solved] awk oddity Post 302888746 by bakunin on Monday 17th of February 2014 06:33:11 AM
Old 02-17-2014
Quote:
Originally Posted by djzah
Anyway to also add a way to ignore the comments that begin with
Code:
#

The same way as RudiC already suggested:
Quote:
Originally Posted by RudiC
by adding sth like [modification by bakunin:]/^#/{next}[mod ends] to the top of the awk script.
The hints we give are supposed to be read, tried out, understood, then modified and applied differently to serve a similar but different purpose. They are NOT MEANT to be followed blindly without thinking. If you are given "do procedure A" as an answer to "how can i achieve A" you should find out how that works and try "do procedure B" first, before asking "how can i achieve B". Chances are it will work if you have understood how A was achieved in first place.

I hope this helps.

bakunin
 

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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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