or download this
my (@fw, @vrf, @vlan, @portchannel);
@fw = &collectData('fw', $CFG{$CFG{FW}});
@vrf = &collectData('vrf', $CFG{$CFG{VRF}});
@vlan = &collectData('vlan', $CFG{$CFG{VLAN}});
@portchannel = &collectData('portchannel', $CFG{$CFG{PORTCHANNEL}});