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perlfaq9

Current Perl documentation can be found at perldoc.perl.org.

Here is our local, out-dated (pre-5.6) version:

This section deals with questions related to networking, the internet, and a few on the web.

My CGI script runs from the command line but not the browser. (500 Server Error)
How can I get better error messages from a CGI program?
How do I remove HTML from a string?
How do I extract URLs?
How do I download a file from the user's machine? How do I open a file on another machine?
How do I make a pop-up menu in HTML?
How do I fetch an HTML file?
How do I automate an HTML form submission?
How do I decode or create those %-encodings on the web?
How do I redirect to another page?
How do I put a password on my web pages?
How do I edit my .htpasswd and .htgroup files with Perl?
How do I make sure users can't enter values into a form that cause my CGI script to do bad things?
How do I parse a mail header?
How do I decode a CGI form?
How do I check a valid mail address?
How do I decode a MIME/BASE64 string?
How do I return the user's mail address?
How do I send mail?
How do I read mail?
How do I find out my hostname/domainname/IP address?
How do I fetch a news article or the active newsgroups?
How do I fetch/put an FTP file?
How can I do RPC in Perl?