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Full Discussion: Help Needed Perl
Top Forums Shell Programming and Scripting Help Needed Perl Post 302317739 by durden_tyler on Tuesday 19th of May 2009 11:03:59 PM
Old 05-20-2009
Quote:
Originally Posted by john_prince
Thanks for the reply.

However, this is not working.

perl test_scr.pl 22,222-3333
It is not working because that is not what you had asked.

Quote:
However in this I want to have null output where first value of input is null. ( For Example: $record = " ,111-5555") .
Is the first value of your input equal to null ? - No. It is "22".
Does your example match your input ? - No. Your example started with a comma; your input does not start with a comma.

Thanks,
tyler_durden
 

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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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