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1. Shell Programming and Scripting
Hi folks,
I have a scenario to convert the update statements into insert statements using shell script (awk, sed...) or in database using regex.
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2. Programming
Hello,
i'm trying to show the Image of an monochrome webcam in an xlib-Window.
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3. Shell Programming and Scripting
Hi, How to use Image::size function ? because I want to list all image thatare less than size pixels in horizontal resolution. so here is my code :
#!/usr/bin/perl -w
use Image::Size;
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4. Shell Programming and Scripting
Hi to all,
Some help here please.
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5. UNIX for Advanced & Expert Users
Hi,
Is there any inbuild tool or software through which we can take system image of any unix system?
Please suggest.
Regards,
Ravi D (9 Replies)
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6. Shell Programming and Scripting
Hi,
Am trying to execute certain commands if the condition satisfied, but i feel i am making some mistakes in the usage of if statement
here is the code
#!/bin/ksh
SIZE=$(ls -ltr /aemu/ws/DN.txt | tr -s ' ' | cut -d ' ' -f 5)
filename=`TZ=CST+24 date +%Y%m%d`
ZERO=0
if
then
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7. Shell Programming and Scripting
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8. Solaris
hi ,
we are using Veritas netbackup 5 to backup all databases at our site.
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9. UNIX for Dummies Questions & Answers
On windows we can save the screen in a .bmp file format. I sit possible to do the same thing in Unix? (3 Replies)
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CounterFile(3pm) User Contributed Perl Documentation CounterFile(3pm)
NAME
File::CounterFile - Persistent counter class
SYNOPSIS
use File::CounterFile;
$c = File::CounterFile->new("COUNTER", "aa00");
$id = $c->inc;
open(F, ">F$id");
DESCRIPTION
This module implements a persistent counter class. Each counter is represented by a separate file in the file system. File locking is
applied, so multiple processes can attempt to access a counter simultaneously without risk of counter destruction.
You give the file name as the first parameter to the object constructor ("new"). The file is created if it does not exist.
If the file name does not start with "/" or ".", then it is interpreted as a file relative to $File::CounterFile::DEFAULT_DIR. The default
value for this variable is initialized from the environment variable "TMPDIR", or /usr/tmp if no environment variable is defined. You may
want to assign a different value to this variable before creating counters.
If you pass a second parameter to the constructor, it sets the initial value for a new counter. This parameter only takes effect when the
file is created (i.e. it does not exist before the call).
When you call the "inc()" method, you increment the counter value by one. When you call "dec()", the counter value is decremented. In both
cases the new value is returned. The "dec()" method only works for numerical counters (digits only).
You can peek at the value of the counter (without incrementing it) by using the "value()" method.
The counter can be locked and unlocked with the "lock()" and "unlock()" methods. Incrementing and value retrieval are faster when the
counter is locked, because we do not have to update the counter file all the time. You can query whether the counter is locked with the
"locked()" method.
There is also an operator overloading interface to the File::CounterFile object. This means that you can use the "++" operator for
incrementing and the "--" operator for decrementing the counter, and you can interpolate counters directly into strings.
COPYRIGHT
Copyright (c) 1995-1998,2002,2003 Gisle Aas. All rights reserved.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
AUTHOR
Gisle Aas <gisle@aas.no>
perl v5.10.0 2004-01-23 CounterFile(3pm)