6/25    how do you do this w/ a shell "foreach" or equiv?:
        for ($i=0;$i<127;$i++) {
          print "$i: ",`whois -h http://whois.arin.net ${i}.0.0.0 | head -1`;
        }
        \_ csh: --jsjacob
        % @ n=0
        % while ($n < 127)
        while? echo "${n}: `whois -h http://whois.arin.net ${n}.0.0.0 | head -1`"
        while? @ n++
        while? end
        \_ sh: -- schoen
        $ N=1; while [ $N -lt 127 ]
        > do echo "$N, `whois -h http://whois.arin.net $N.0.0.0 | head -1`"
        > N=`expr $N + 1`
        > done
          \_ However, there is a limit on the query rate in practice, which
             makes this not work quite right.
             \_ A 5 second delay is sufficient
          \_ Aren't there others besides http://whois.arin.net?  Can't you do
             host ${n}.0.0.0 | head -l
             \_ it's head -1, not head -l!
             \_ It's not finding a host in DNS, it's finding a network in whois
             \_ Use whois.nic.mil instead. Faster server.
        \- jot 128 0 --psb