10-10-2012
Quote:
We are going to put each one of these seven lessons into it's own thread and then see if we can get a discussion going on each (improvements, suggestions, errors, etc.) - Maybe we'll make a new (better?) set?
Good idea!
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1. Solaris
Hi everyone,
I'm looking to hire for private lessons a individual who is presently working as a unix system administrator or instructor in school who is teaching unix. I live in Clifton nj my nubmer is Cell **no phonenumbers on this forum** or email
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2. Programming
I started wrting c lessons for absoulute begginers to advanced users, I think material can be considered quality, and my students learn programming with this stuff. If you wish feel free to start reading it here:
www.visualcmaniac.com
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I downloaded vim.7.2 and compiled the vim source .
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4. What is on Your Mind?
Lesson 1:
A man is getting into the shower just as his wife is finishing up her shower, when the doorbell rings.
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LEARN ABOUT OSF1
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)