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Full Discussion: help on find command
Operating Systems Linux help on find command Post 302251166 by jacco on Saturday 25th of October 2008 10:49:08 AM
Old 10-25-2008
First make a referencefile with a timestamp of october 2nd 2008
Quote:
$ touch -t 0810020000 referencefile
Then search for files/directory which are newer than the referencefile
Quote:
$ find . -newer referencefile
Use '-anewer' for accesstime comparizon
Use '-cnewer' for "properties" comparizon (changed owner, permissions, ...)
Use '-newer' for modificationtime comparizon.

There is no such thing as 'creation time'. When a file is created, the modificationtime is the creationtime. When the file is altered, you cannot see the creationtime anymore.
 

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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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