Created
March 28, 2014 03:03
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| #!/bin/bash | |
| if [ -z "$1" ]; then | |
| echo | |
| echo usage: $0 network-interface | |
| echo | |
| echo e.g. $0 eth0 | |
| echo | |
| exit | |
| fi | |
| IF=$1 | |
| while true | |
| do | |
| R1=`cat /sys/class/net/$1/statistics/rx_bytes` | |
| T1=`cat /sys/class/net/$1/statistics/tx_bytes` | |
| sleep 1 | |
| R2=`cat /sys/class/net/$1/statistics/rx_bytes` | |
| T2=`cat /sys/class/net/$1/statistics/tx_bytes` | |
| TBPS=`expr $T2 - $T1` | |
| RBPS=`expr $R2 - $R1` | |
| TKBPS=`expr $TBPS / 1024` | |
| RKBPS=`expr $RBPS / 1024` | |
| echo "tx $1: $TKBPS kb/s rx $1: $RKBPS kb/s" | |
| done |
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