WE::DB::ComplexUser::AuthUnix - ComplexUser database authentication via unix passwd
Use normal Unix passwd authentication to authenticate the user against.
The user object could define the additional member
Auth_Unix_User to define the Unix user (the user object Username is used if
Auth_Unix_User is undefined).
NOTE: Most modern Unices (e.g. Linux, *BSD) have "shadow" files which hold the passwords and which are only accessible for root. This means this module is most cases only works if running as root.