In last week's column, we looked at a script that extracts data from a web site and adds it to a log file. There is no limit to the number of things you can do with a script that queries the web and logs information for you -- from watching stock prices to monitoring the visits counter on your personal web site. In this week's column, we'll examine how you can use a similar technique to determine whether a particular site is available, whether it is redirecting traffic to a second site and whether the content is up-to-date. continue
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