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Full Discussion: Understanding Awk and Cat
Top Forums Shell Programming and Scripting Understanding Awk and Cat Post 302338008 by jordRiot on Sunday 26th of July 2009 11:48:15 PM
Old 07-27-2009
Understanding Awk and Cat

Hi Guys,

I was recently come across some code to hopefully learn a little bit about putting Shell commands into PHP application to run on a Linux server. However, I don't understand the command AT ALL... and was wondering if anyone can interpret it:

Code:
cat userIDs.dat | awk '{s=s+1; if (s==$end) print $0; if (s > $start && s < $end) printf \"%s,\", $0}' > path/to/file/to/store/in/IDS.file


It doesn't seem to do anything, but I may have put an error in there, when making it applicable to my directories etc. I have no clue!


Any light you guys can shed on this would be great!


Thank you,
Jordan
 

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CPANPLUS::Shell(3pm)					 Perl Programmers Reference Guide				      CPANPLUS::Shell(3pm)

NAME
CPANPLUS::Shell - base class for CPANPLUS shells SYNOPSIS
use CPANPLUS::Shell; # load the shell indicated by your # config -- defaults to # CPANPLUS::Shell::Default use CPANPLUS::Shell qw[Classic] # load CPANPLUS::Shell::Classic; my $ui = CPANPLUS::Shell->new(); my $name = $ui->which; # Find out what shell you loaded $ui->shell; # run the ui shell DESCRIPTION
This module is the generic loading (and base class) for all "CPANPLUS" shells. Through this module you can load any installed "CPANPLUS" shell. Just about all the functionality is provided by the shell that you have loaded, and not by this class (which merely functions as a generic loading class), so please consult the documentation of your shell of choice. BUG REPORTS
Please report bugs or other issues to <bug-cpanplus@rt.cpan.org<gt>. AUTHOR
This module by Jos Boumans <kane@cpan.org>. COPYRIGHT
The CPAN++ interface (of which this module is a part of) is copyright (c) 2001 - 2007, Jos Boumans <kane@cpan.org>. All rights reserved. This library is free software; you may redistribute and/or modify it under the same terms as Perl itself. SEE ALSO
CPANPLUS::Shell::Default, CPANPLUS::Shell::Classic, cpanp perl v5.16.2 2012-10-11 CPANPLUS::Shell(3pm)
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