enzotib

#!/bin/bashiface="eth1"tbytes() {  iface="$1"  /sbin/ifconfig "$iface" | awk '/RX bytes/ { split($2, a, ":"); print a[2] }'}total_bytes_old="$(tbytes "$iface")"sleep 1while true; do  total_bytes="$(tbytes "$iface")"  rate="$(echo "scale=2; ($total_bytes - $total_bytes_old)/1024" | bc)"  echo "$rate KB/s"  total_bytes_old=$total_bytes  sleep 1done