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Full Discussion: Help with Perl script that can check a URL and notifiy when changes occur
Top Forums Shell Programming and Scripting Help with Perl script that can check a URL and notifiy when changes occur Post 302725685 by DGPickett on Friday 2nd of November 2012 01:26:24 PM
Old 11-02-2012
There are already free web sites that do that for you and send an email.

I would wget into cksum and save the cksum, size and url in a sorted file. Make a new sorted file on the next pass and compare files using "comm -13 old new | while read cksum sz url ;do ... done". Add files with a 0 length and 0 cksum, and the next pass will update them, but sensing a pair of zeros, it knows to not notify.
 

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LEARN ABOUT DEBIAN

twill-sh

TWILL(1)							  [FIXME: manual]							  TWILL(1)

NOM

       twill-sh - a simple scripting language for Web browsing

SYNOPSIS

       twill-sh [option] [script(s)]

DESCRIPTION

       Twill is a simple language that allows users to browse the Web from a command-line interface. With twill, you can navigate through Web
       sites that use forms, cookies, and most standard Web features. twill-sh lets you interactively browse the Web.

OPTIONS

       --help/-h
	   print usage information

       --version/-v
	   Show version information and exit

       --quiet/-q
	   Do not show normal output

       --interactive/-i
	   Drop into an interactive shell after running files if any

       --fail/-f
	   Exit on first file which fails

       --never-fail/-n
	   Continue executing scripts even if errors occur

       --url/-u URL
	   Start at the given URL before each script

SEE ALSO

       twill-fork (1).

AUTHORS

       Twill was written by C. Titus Brown titus@idyll.org and

       This manual page was written by Arnaud Fontaine arnau@debian.org for the Debian system (but may be used by others). Permission is granted
       to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version published by
       the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.

COPYRIGHT

       Copyright (C) 2007 Arnaud Fontaine

[FIXME: source] 						  april 10, 2007							  TWILL(1)
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