The following may get you started:

use warnings;
use strict;

my @vxvols = <DATA>;

for (@vxvols) {
    chomp;
    my @cols = split;
    
    next unless $cols[0] =~ /^pl\b/;
    next unless $cols[1] =~ /-02/;
    
    print "vxplex -g rootdg att $cols[2] $cols[1]\n";
}

__DATA__
pl Flars-01     Flars        ENABLED  ACTIVE   20982912 RAID      3/32
+     RW
pl Flars-02     Flars        ENABLED  LOG      10176    CONCAT    -   
+     RW
...
[download]

Prints:

vxplex -g rootdg att Flars Flars-02
vxplex -g rootdg att backup backup-02
vxplex -g rootdg att export_install export_install-02
vxplex -g rootdg att rootdisk7vol rootdisk7vol-02
vxplex -g rootdg att rootvol rootvol-02
vxplex -g rootdg att runbook runbook-02
vxplex -g rootdg att swapvol swapvol-02
vxplex -g rootdg att var var-02
[download]