URLWATCH(1)

NAME
urlwatch - Watch web pages and arbitrary URLs for changes

SYNOPSIS
urlwatch [options]

DESCRIPTION
urlwatch watches a list of URLs for changes and prints out unified diffs of the changes. You can filter always-changing parts of websites by providing a "hooks.py" script.

OPTIONS

--version
    show program's version number and exit

-h, --help
    show the help message and exit

-v, --verbose
    Show debug/log output

--urls=FILE
    Read URLs from the specified file

--hooks=FILE
    Use specified file as hooks.py module

-e, --display-errors
    Include HTTP errors (404, etc..) in the output

ADVANCED FEATURES
urlwatch includes some advanced features that you have to activate by creating a hooks.py file that specifies for which URLs to use a specific feature. You can also use the hooks.py file to filter trivially-varying elements of a web page.

  ICALENDAR FILE PARSING
This module allows you to parse .ics files that are in iCalendar format and provide a very simplified text-based format for the diffs. Use it like this in your hooks.py file:
  from urlwatch import ical2txt
  def filter(url, data):
      if url.endswith('.ics'):
          return ical2txt.ical2text(data).encode('utf-8') + data
      # ...you can add more hooks here...

  HTML TO TEXT CONVERSION
There are three methods of converting HTML to text in the current version of urlwatch: "lynx" (default), "html2text" and "re". The former two use command-line utilities of the same name to convert HTML to text, and the last one uses a simple regex-based tag stripping method (needs no extra tools). Here is an example of using it in your hooks.py file:
  from urlwatch import html2txt
  def filter(url, data):
      if url.endswith('.html') or url.endswith('.htm'):
          return html2txt.html2text(data, method='lynx')
      # ...you can add more hooks here...

FILES

~/.urlwatch/urls.txt
    A list of HTTP/FTP URLs to watch (one URL per line)

~/.urlwatch/lib/hooks.py
    A Python module that can be used to filter contents

~/.urlwatch/cache/
    The state of web pages is saved in this folder

AUTHOR
Thomas Perl <thp.io/about>

WEBSITE
http://thp.io/2008/urlwatch/