Couple quick scripts to get current transfer rates on an interface in bash ###getRx.sh: #!/bin/bash get_ispeed(){ cat /sys/class/net/eth0/statistics/rx_bytes; } s1=`get_ispeed`; sleep 1s; s2=`get_ispeed`; d=$(($s2-$s1)); printf “%.3f kB/s\n” $(bc -l