if [ -f /proc/net/pf_ring/info ]; then
                header "pf_ring stats"
                cat /proc/net/pf_ring/info
                ls /proc/net/pf_ring/*-* &>/dev/null && for i in /proc/net/pf_ring/*-* ; do
                        echo
                        echo $i
                        grep "Appl. Name" $i
                        grep "Tot Packets" $i
                        grep "Tot Pkt Lost" $i
                        grep "Errors" $i
                        grep "Min Num Slots" $i
                        grep "Num Free Slots" $i
                done
        fi

Published:
http://blog.securityonion.net/2014/01/new-securityonion-sostat-package.html