Shell之查看网卡流量
作者:互联网
#!/bin/bash function local_nic() { local NUM ARRAY_LENGTH NUM=0 for NIC_NAME in $(ls /sys/class/net|grep -vE "lo|docker0"); do NIC_IP=$(ifconfig $NIC_NAME |awk -F'[: ]+' '/inet/ && !/inet6/{print $3}') #不取IPv6地址。 if [ -n "$NIC_IP" ]; then NIC_IP_ARRAY[$NUM]="$NIC_NAME:$NIC_IP" #将网卡名和对应IP放到数组 let NUM++ fi done ARRAY_LENGTH=${#NIC_IP_ARRAY[*]} if [ $ARRAY_LENGTH -eq 1 ]; then #如果数组里面只有一条记录说明就一个网卡 NIC=${NIC_IP_ARRAY[0]%:*} return 0 elif [ $ARRAY_LENGTH -eq 0 ]; then #如果没有记录说明没有网卡 echo "No available network card!" exit 1 else #如果有多条记录则提醒输入选择 for NIC in ${NIC_IP_ARRAY[*]}; do echo $NIC done while true; do read -p "Please enter local use to network card name: " INPUT_NIC_NAME COUNT=0 for NIC in ${NIC_IP_ARRAY[*]}; do NIC_NAME=${NIC%:*} if [ $NIC_NAME == "$INPUT_NIC_NAME" ]; then NIC=${NIC_IP_ARRAY[$COUNT]%:*} return 0 else COUNT+=1 fi done echo "Not match! Please input again." done fi } local_nic while true; do OLD_IN=`ifconfig $NIC |awk -F'[: ]+' '/bytes/{if(NR==8)print $4;else if(NR==5)print $6}'` OLD_OUT=`ifconfig $NIC |awk -F'[: ]+' '/bytes/{if(NR==8)print $9;else if(NR==7)print $6}'` sleep 1 NEW_IN=`ifconfig $NIC |awk -F'[: ]+' '/bytes/{if(NR==8)print $4;else if(NR==5)print $6}'` NEW_OUT=`ifconfig $NIC |awk -F'[: ]+' '/bytes/{if(NR==8)print $9;else if(NR==7)print $6}'` IN=`awk 'BEGIN{printf "%.1f\n",'$((${NEW_IN}${OLD_IN}))'/1024/128}'` OUT=`awk 'BEGIN{printf "%.1f\n",'$((${NEW_OUT}${OLD_OUT}))'/1024/128}'` echo -e " In ------ Out" echo "${IN}MB/s ${OUT}MB/s" sleep 1 done
标签:Shell,NAME,NIC,流量,网卡,IP,print,ARRAY,NR 来源: https://www.cnblogs.com/liujunjun/p/14411452.html