for ( `lspv -l vpath0` ) {
    print +(split)[4], "\n";
}

##</code><code>##

open my $output, "lspv -l vpath0 |" or die $!;
<$output>; # discard first
<$output>; # two lines

for ( <$output> ) {
    print +(split)[4], "\n";
}