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Homework and Emergencies Homework & Coursework Questions Reminder script not working... Post 302569574 by csharp100 on Monday 31st of October 2011 08:54:21 PM
Old 10-31-2011
Quote:
Originally Posted by agama
As this is an assignment I'm only going to suggest that you look at a couple of things.

First, check the syntax of your echo statement. Think redirection.
I corrected this with a ">" and appreciate that.
Quote:
Secondly, when at runs your script, what is the standard input? That might be a bit cryptic, so think about where the input to the while might be coming from. Remember, the script given to at doesn't have any variables that are in the script that you use to submit the job.
I'm not really quite sure what you are telling me here. Are you saying that the message is not getting into the at command?
 

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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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