Might be simpler to let awk do the calculation, and let the script's input parameters be used in the normal sense.
This code looks longer, because I added lots of checking, but the functional part is more concise.
I gave this a test under Darwin with bash.
You could make a really simple script with this:
If blocks is negative (your threshold is too low), dd will report an error. If it's 0, it will essentially do nothing (but still create the file).
You could do it for ALL mounted filesystems with this modification:
Last edited by otheus; 11-14-2012 at 09:36 PM..
Reason: correction
Hi,
I have one file stat.
Stat file contents are as follows: for example.
H50768020040913,00260100,507680,13,0000000643,0000000643,00000,0000
H50769520040808,00260100,507695,13,0000000000,0000000000,00000,0000 H50770620040611,00260100,507706,13,0000000000,0000000000,00000,0000
Now i... (1 Reply)
Hi friends,
In my case, there are serveral PCs running Linux in a LAN.
I would like to to mount the directory /A_river of machine-A to the file system of another machine machine-B so that I can access files in that directory.
I do not know how to do this. The situation is complicated by... (2 Replies)
AIX 5.3 / KSH
I have a Java application which creates a log file a.log. I have a KSH script which does the following action
cp a.log /directory2/b.log
> a.log
After this the file size goes to 0 as per "ls -l"
Then next time when the application writes into this file, the file size... (4 Replies)
Hi,
I have a file by redirecting some contents in unix shell.
Even when there is no content that is being redirected, the file size still shows greater than zero.
but even if there is no matching pattern the file APPRES has size greater than 0bytes.
awk -f AA.awk $logfile>APPRES... (3 Replies)
Hi,
We currently have an Oracle database running and it is creating lots of processes in the /proc directory that are 1000M in size. The size of the /proc directory is now reading 26T. How can this be if the root file system is only 13GB?
I have seen this before we an Oracle temp file... (6 Replies)
Hi,
I'm working on a script that will take the contents of a file, that is in a row and column format, and compare it to a arrangment file. Such that if there is any or all blanks in my content file, the blank will be filled with a flag and will retain the row and column configuration.
Ex.
... (2 Replies)
Hi,
I have created an empty file and a symbolic link to a file. But when I issue the following commands, I am getting the output 2.
stat -c "%s" linkfile
du -hb linkfile
Why this is happening? (4 Replies)
Hello,
I need help for writing a script that fills already generated xml file with data from oracle database and random sequences.
For example if we have the following tags:
<ns1:message>
<ns1:messageId> </ns1:messageId>
<ns1:languageCode> </ns1:languageCode>... (10 Replies)
Hi all
I wonder if its possible to mount on a hp-ux server a file system that was previously mounted on a solaris 10 server. The LUN is on NetApp stoarge.
The problem on hp-ux I cannot do pvcreate on the lun (disk) because contains data.
Any help will be appreciated
FR (2 Replies)
Discussion started by: fretagi
2 Replies
LEARN ABOUT DEBIAN
jpeghotp
JPEGHOTP(1) User Commands JPEGHOTP(1)NAME
jpeghotp - find hot or dead pixels in otherwise black or white JPEG images
SYNOPSIS
jpeghotp [OPTION]... JPEG-FILE [PIXEL-BLOCKS-FILE]
DESCRIPTION
Jpeghotp automatically finds hot pixels in an otherwise black JPEG image (default) or dead pixels in an otherwise white JPEG image (if the
--invert option is specified). The output is suitable as a pixel block specification file for the jpegpixi(1) program. A typical applica-
tion is to process an image taken with a digital camera with CCD defects.
To obtain a black image, take a picture in total darkness or with covered lens. To obtain a while image, take an overexposed picture of a
well-lit piece of white paper.
JPEG-FILE is the filename of the JPEG image to read. It can be -, which refers to standard input.
PIXEL-BLOCKS-FILE is the name of the file to write the coordinates and sizes of the hot (or dead) pixel blocks to. If it is omitted, the
coordinates and sizes are written to standard output.
OPTIONS -t THRESHOLD, --threshold=THRESHOLD
Specify the threshold between noise and signal. Pixel luminosities below the threshold are considered CCD noise, luminosities above
are considered hot pixels. THRESHOLD must be a number between 0 and 100 followed by a percent character (%). The default is 10%.
-i, --invert
Invert the image. If this option is specified, dead pixels in an otherwise white image instead of hot pixels in an otherwise black
image are found.
-c, --comments
Output comments with the luminosities of the hot (or dead) pixel blocks. This can be helpful in hand tuning the pixel blocks file.
--help Display a short help text and exit immediately.
--version
Display version information and exit immediately.
BUGS
Please report bugs to <martin-jpegpixi@zero-based.org>.
COPYRIGHT
Copyright (C) 2003, 2004, 2005 Martin Dickopp
Jpeghotp is free software; it may be copied and/or modified under the terms of the GNU General Public License version 2 or (at your option)
any later version. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
SEE ALSO jpegpixi(1)
The jpegpixi homepage: http://www.zero-based.org/software/jpegpixi/
jpegpixi 1.1.1 18-Apr-2005 JPEGHOTP(1)