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Top Forums Shell Programming and Scripting /bin/bash - variable substitution. Post 302309338 by trey85stang on Tuesday 21st of April 2009 04:34:54 PM
Old 04-21-2009
Quote:
Originally Posted by Franklin52
Try this:

Code:
echo $clock | sed 's!.*"\(.*\)/.*!\1!'

Regards
thanks, but I was really just wondering if I could do this all with bash. Smilie

Quote:
Originally Posted by colemar
Code:
colemar@deb:~$ echo ${clock:10:2}
US

I know that, but the problem lies that US is not alway US thus it can be more then 2 characters long... Smilie
 

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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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