shell脚本一一项目6

主题：获取网卡的流量

ifconfig 查看流量

文件流量数据量

 

 

脚本内容

#!/bin/bash
#name: mark
# check network dev's liuliang
nic=$1

echo -e "In -----Out"
while true;do
old_in=$(awk '/'$nic'/{print $2}' /proc/net/dev) old_out=$(awk '/'$nic'/{print $10}' /proc/net/dev) sleep 1 new_in=$(awk '/'$nic'/{print $2}' /proc/net/dev) new_out=$(awk '/'$nic'/{print $10}' /proc/net/dev) in=$(printf "%.1f%s" "$((($new_in-$old_in)/1024))" "KB/S") out=$(printf "%.1f%s" "$((($new_out-$old_out)/1024))" "KB/S") echo "$in $out"

done

 

小结：

printf "%.1f%s"   "1.2333" "kb/s" --> 1.2kb/s