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Top Forums Shell Programming and Scripting Finding a string in a text file and posting part of the line Post 302407238 by danmero on Wednesday 24th of March 2010 11:09:18 PM
Old 03-25-2010
Quote:
Originally Posted by busdude
searching the first 10 characters of every line in a text file for a specific string
Quote:
Originally Posted by alister
If the string being searched must occur in the first ten characters, but can itself be less than 10 characters
This is not about right vs. wrong OR what if suppositions.
The OP ask to "searching the first 10 characters" and that's a fact and we should start from here. Everything else are only suppositions.
I can provide answers/solutions(short) base on facts, otherwise the list will be too long Smilie

Regards,
丹 ™
 

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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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