#!/usr/bin/perl
use 5.8.8; use strict; use warnings; use LWP::UserAgent;
$client = LWP::UserAgent->new( ) or die;
print "Enter site:";
$url=<STDIN>; 
$answer = $client->get($url);
print "============================\n";
print $answer->header("server")."\n";
print "============================\n";
exit(0);

Can't locate LWP/UserAgent.pm in @INC (@INC contains: /usr/local/lib/perl5 /usr/local/share/perl5 /usr/lib/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib/perl5 /usr/share/perl5 .) at server.pl line 2.
BEGIN failed--compilation aborted at server.pl line 2.