#!/bin/sh
perl -I /some/special/libpath:/another/special/libpath "$@"

##</code><code>##

#!/bin/sh
exec perl -I /some/special/libpath:/another/special/libpath "$@"

##</code><code>##

#!/bin/sh
exec /usr/local/perl-5.42.99/bin/perl -I /some/special/libpath:/another/special/libpath "$@"

##</code><code>##

#!/usr/local/perl-5.42.99/bin/perl 
use lib '/some/special/libpath','/another/special/libpath';

# rest of the script here, unmodified

##</code><code>##

#!/usr/local/perl-5.42.99/bin/perl 
use lib '/some/special/libpath','/another/special/libpath';
require '/path/to/real/script.pl';

##</code><code>##

#!/usr/local/perl-5.42.99/bin/perl 
use lib '/some/special/libpath','/another/special/libpath';
unless (defined(do '/path/to/real/script.pl')) {
    die "Could not parse script: $@" if $@;
    die "Could not read script: $!";
}