Haserl is a small cgi wrapper that allows "PHP" style cgi programming,
but uses a UNIX bash-like shell or lua as the programming language. It
is very small, so it can be used in embedded environments, or where
something like PHP is too big.

It combines three features into a small cgi engine:
* It parses POST and GET requests, placing form-elements as
name=value pairs into the environment for the CGI script to use.
This is somewhat like the uncgi wrapper.
* It opens a shell, and translates all text into printable statements.
All text within ... ?> constructs are passed verbatim to the
shell. This is somewhat like writing PHP scripts.
* It can optionally be installed to drop its permissions to the
owner of the script, giving it some of the security features of
suexec or cgiwrapper.