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Full Discussion: Questions related to if in awk context and if without awk context
Top Forums Shell Programming and Scripting Questions related to if in awk context and if without awk context Post 303029694 by Seth on Thursday 31st of January 2019 01:13:15 AM
Old 01-31-2019
Quote:
Originally Posted by Don Cragun
Is this a homework assignment? Homework and coursework questions can only be posted in this forum under special homework rules
(url's from your quote deleted as I have less than 5 posts)


This is not a homework assignment. I am learning scripting on my own.


Quote:
Originally Posted by Don Cragun
Please review the rules, which you agreed to when you registered, if you have not already done so.
(url deleted from quote, for same reason above)


I have reviewed the rules. This is not a homework assignment. I am asking for input from people with more knowledge than me to improve my learning.


Quote:
Originally Posted by Don Cragun
If this is homework, please explain where the code you presented came from. There are so many syntax errors that it is hard to know where to start explaining the problems.

Again, this is not a homework assignment, and I came up with the code myself. The code works in it's simple purpose, but I am looking to improve it as stated in my first question, including any syntax errors. I am also seeking to understand the difference in the if function between awk and non-awk, as stated in my second question.


Quote:
Originally Posted by Don Cragun
If you did post homework in the main forums, please review the guidelines for posting homework and repost.
(urls deleted)


This is not a homework assignment, and as I am not enrolled in any type of course or program, any posts I make in the foreseeable future will not be.



Thank you.
 

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LEARN ABOUT OSX

ppmtopgm

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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