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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 302725669 by adam1mc on Friday 2nd of November 2012 01:01:04 PM
Old 11-02-2012
Help with Perl script that can check a URL and notifiy when changes occur
I'm a scripting newbie and I'm trying to learn. No better way than being assigned a project.

So basically, I'm trying to come up with a script that can periodically check a URL and then notify when changes occur to the file.

So what I'm thinking is that I need to devise a PERL script that can:
  • check a predefined URL
  • wget the page
  • count the number of lines that appear in the document
  • store that information to a file
  • and then do the same 10 minutes later
    • if the number of lines of the file is greater than the previous check
    • then send an email.
I haven't gotten very far. So far I've got:
Code:
#!/usr/bin/perl

system ('wget -O tempfile.txt "http://www.google.com"'); 
@lines = <tempfile.txt>

Which seems to get the file and save it to tempfile.txt, but it's not counting the lines.


From what I've been reading, I think I need to use PRINT in order to print the number of lines to a document.... but I'm kind of hung up at this point.


Anyone feel like lending a hand?


Thanks
Last edited by adam1mc; 11-02-2012 at 02:01 PM.. Reason: typo
 

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LEARN ABOUT DEBIAN

www::freshmeat::project

WWW::Freshmeat::Project(3pm)				User Contributed Perl Documentation			      WWW::Freshmeat::Project(3pm)

NAME

       WWW::Freshmeat::Project - retrieve project information

   WWW::Freshmeat::Project methods
       The "WWW::Freshmeat::Project" object provides some of the fields from the freshmeat.net entry through the following methods

       url_project_page
	   URL of project page on Freshmeat

       url_homepage
	   deprecated

       projectname_full
       desc_short
       desc_full
       license
       trove_id
	   Removed.

       projectname_short
       www_freshmeat

       Additionally, it provides the following "higher-level" methods:

       name
       description
	   Return either "projectname_full" (respectively "desc_full") or "projectname_short" (respectively "desc_short") if the former is empty.

       version
	   Returns the version of the latest release.

       url Removed.

	   "url_homepage" returns a freshmeat.net URL that redirects to the actual project's home page. This url() method tries to follow the
	   redirection and returns the actual homepage URL if it can be found, or the URL to the freshmeat.net entry for the project.

       branches
	   Removed.

	   List of branches for project. Returns hash in form of (branch id => branch name).

       popularity
	   Removed.

	   Freshmeat popularity data for project. Returns hash with keys record_hits, url_hits, subscribers

       url_list
	   Removed.

       url_list1
	   Returns list of URLs for project. Each URL is a WWW::Freshmeat::Project::URL object.

       real_author
	   Removed.

	   Returns name of author (not maintainer).

       release_date
	   Removed.

	   Returns date of latest release.

       maintainers
	   Removed.

	   Returns list of names of maintainers.

       1;

perl v5.14.2							    2012-03-05					      WWW::Freshmeat::Project(3pm)
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