I'll repharse my question:Collect system information from unix server like df, ntpq, etc this output is like txt output instead of that need in html output, how to do it?

Well ok, that takes care of "save the html" portion, for the rest, my idea, I'd solve the problem the exact same way

I'd probably use what Corion said in addition to
HTML::FromText - converts plain text to HTML
Text::Autoformat - Automatic text wrapping and reformatting