in reply to Restricting the size of Input file

I take it you are talking about scripts that use CGI.pm, i.e. contain the line

use CGI
in some form (if you are using something older, such as cgi-lib, I recommend you switch to CGI.pm).

You want to set $CGI::POST_MAX to a sensible number of bytes, which will act as a limit on the size of uploads.

By the way, it's Perl or perl, not PERL.

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