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Permanent Redirect with HTTP 301
"his article describes how to properly redirect a web page using an HTTP 301 status code and Location header. The 301 status code is used to indicate that a page has permanently moved. Multiple techniques are presented with recommendations."
(categories: programming howto web 301 html htaccess redirects)

Perl: Reading from a File
(categories: perl scripting programming)

Page 7 – Array Manipulation in Perl
(categories: perl scripting programming)