how to capture packet on two direction and two vmnic using pktcap-uw ?

[7kxa]

I use '&' to start four pktcap-uw on ESXi 5.5, is a better way?

pktcap-uw --uplink vmnic6 --ip 132.97.120.19   -o /vmfs/volumes/172.31.4.83-LocalDisk/83-6-in.pcap -P & pktcap-uw --uplink vmnic6 --ip 132.97.120.19   -o /vmfs/volumes/172.31.4.83-LocalDisk/83-6-out.pcap -P --dir 1 & pktcap-uw --uplink vmnic4 --ip 132.97.120.19   -o /vmfs/volumes/172.31.4.83-LocalDisk/83-4-in.pcap -P & pktcap-uw --uplink vmnic4 --ip 132.97.120.19   -o /vmfs/volumes/172.31.4.83-LocalDisk/83-4-out.pcap -P --dir 1 &