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Full Discussion: Saving file edited whith sed
Top Forums UNIX for Dummies Questions & Answers Saving file edited whith sed Post 302432781 by Scrutinizer on Sunday 27th of June 2010 05:18:57 AM
Old 06-27-2010
@EAGLE,
It is generic, but with any regex pattern you have to wonder what minimum precision is required. In this case [A-Z] is ample precision IMO.

---------- Post updated at 11:18 ---------- Previous update was at 02:57 ----------

Quote:
Originally Posted by pseudocoder
Obviously no Smilie
Smilie There is no need for that..

Quote:
Originally Posted by jim mcnamara
pseudocoder - doesn't alternation usually require '(pattern1|pattern2)' - the surrounding parentheses? I've never tried it that way....
Hi Jim, with egrep you can leave out the outer parentheses if all the patterns are part of the alternation.
 

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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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