Не работает LWP

#/usr/bin/perl

use LWP::UserAgent;
         $ua = LWP::UserAgent->new;
         $ua->agent("MyApp/0.1 ");



./lwp.pl
./lwp.pl: line 3: use: command not found
./lwp.pl: line 4: =: command not found
./lwp.pl: line 5: syntax error near unexpected token `('
./lwp.pl: line 5: `         $ua->agent("MyApp/0.1 ");'


lwp конечно установленн, но...