07-03-2012
Thanks, that helped a lot!
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The GNU date command in full of goodies but not when it comes to calculate a date or time difference. Here is what I came up with after looking to more than one solution.
Code should be self explaining.
#!/bin/bash
date2stamp () {
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}
stamp2date (){
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Hi all ,
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There is a closed Thread: <url>Here will be the url to the original post once I have 5 posts in this forum...</url>
But a small bug had found his way into this very cool and simple code.
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Gents,
Please can you help me with this.
When column 49 == 2
Before
X 4714 14710 69445.00 19257.001 1218 12271 69596.00 19460.00 19478.001
X 4714 14710 69445.00 19257.001 1228 12292 69596.00 19480.00 19480.001
After
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Hi Again,
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2016-01-13 01:31 10
2016-01-13 01:30 10
2016-01-13 01:29 10
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LEARN ABOUT ULTRIX
pbmreduce
pbmreduce(1) General Commands Manual pbmreduce(1)
NAME
pbmreduce - read a portable bitmap and reduce it N times
SYNOPSIS
pbmreduce [-floyd|-fs|-threshold ] [-value val] N [pbmfile]
DESCRIPTION
Reads a portable bitmap as input. Reduces it by a factor of N, and produces a portable bitmap as output.
pbmreduce duplicates a lot of the functionality of pgmtopbm; you could do something like pnmscale | pgmtopbm, but pbmreduce is a lot
faster.
pbmreduce can be used to "re-halftone" an image. Let's say you have a scanner that only produces black&white, not grayscale, and it does a
terrible job of halftoning (most b&w scanners fit this description). One way to fix the halftoning is to scan at the highest possible res-
olution, say 300 dpi, and then reduce by a factor of three or so using pbmreduce. You can even correct the brightness of an image, by
using the -value flag.
OPTIONS
By default, the halftoning after the reduction is done via boustrophedonic Floyd-Steinberg error diffusion; however, the -threshold flag
can be used to specify simple thresholding. This gives better results when reducing line drawings.
The -value flag alters the thresholding value for all quantizations. It should be a real number between 0 and 1. Above 0.5 means darker
images; below 0.5 means lighter.
All flags can be abbreviated to their shortest unique prefix.
SEE ALSO
pnmenlarge(1), pnmscale(1), pgmtopbm(1), pbm(5)
AUTHOR
Copyright (C) 1988 by Jef Poskanzer.
02 August 1989 pbmreduce(1)