Well, according to my nslookup, it only takes one host at a time, not a whole list of them. That said, though, you could just loop through the IPs and use backticks to call nslookup on each one: 
for my $ip (@ips) {
    my $output = `nslookup $ip`;
}

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In general, if you need the output of a command, use backticks; if you don't, use system.

However, in this case, you should probably just use Perl builtins or the Socket module, if possible. For example, to translate a host name into an IP address: 

use Socket;
my $addr = inet_ntoa scalar gethostbyname $host;

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In reply to Re: please help - c shell in perl by btrott
in thread please help - c shell in perl by Anonymous Monk

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