09-20-2012
Quote:
Originally Posted by
vidyadhar85
if you have GNU date just go through the man pag..
I already read it
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1. Shell Programming and Scripting
Hi,
I need to get the date and time for past 1 hour from the current date. Anyone know how to do so?
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2. Shell Programming and Scripting
Hi,
Any idea to get display of date - n ( n=1,2,3,4 etc) ?
For example , dtoudt will easily execute by dtoudt -3 and result is
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hii all.
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6. Shell Programming and Scripting
Hi all,
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Hi,
Can anyone tell me how to get the CPU utilisation for past 1 day in Solaris.
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8. Shell Programming and Scripting
hi all..
i want 2 know how 2 find 7days past date from current date..
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Hello All,
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LEARN ABOUT ULTRIX
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)