use Modern::Perl;

while (<DATA>) { # get rid of header block
    last if /--TX--/;
};
while (<DATA>) {
    my ($port, $speed, $duplex, $TX, $RX, $link, $name) = split;
    next unless $link eq 'up';
    say <<EOP;
Port is $port
Speed is $speed
Link is $link
EOP
}


__DATA__
------------------------------------------------------------------
Port   Speed    Duplex     Flow Ctrl      Link       Name
----   -----   --------  --TX-----RX--   ------     ------
  1    10000     full      no     no      down      1
  2    10000     full      no     no      down      2
  3    10000     full      no     no      down      3
  4    10000     full      no     no      down      4
  5    10000     full      no     no      down      5
  6    10000     full      no     no      down      6
  7    10000     full      no     no      down      7
  8    10000     full      no     no      down      8
  9    10000     full      no     no      down      9
 10    10000     full      no     no      down      10
 11    10000     full      no     no      down      11
 12    10000     full      no     no      down      12
 13    10000     full      no     no      down      13
 14    10000     full      no     no      down      14
 15    10000     full      no     no      down      15
 16    10000     full      no     no      down      16
 17    1G/10G    full      no     no      down      17
 18    1G/10G    full      no     no      down      18
 19     1000     full      no     no       up       19
 20    10000     full      no     no      down      20