实时查看linux网卡流量脚本

#!/bin/bash

INTERFACE="eth0"  # 替换为你要监控的网卡名称

echo -e "Interface\tRecv KB/s\tSend KB/s"
while true; do
    OLD_RECV=$(awk '$2 == "'$INTERFACE'" {print $3}' /proc/net/dev)
    OLD_SEND=$(awk '$2 == "'$INTERFACE'" {print $11}' /proc/net/dev)
    sleep 1
    NEW_RECV=$(awk '$2 == "'$INTERFACE'" {print $3}' /proc/net/dev)
    NEW_SEND=$(awk '$2 == "'$INTERFACE'" {print $11}' /proc/net/WebAPI    RECV=$(echo "scale=2; ($NEW_RECV - $OLD_RECV) / 1024" | bc)
    SEND=$(echo "scale=2; ($NEW_SEND - $OLD_SEND) / 1024" | bc)
    echo -e "$INTERFACE\t$RECV\t\t$SEND"
done

sudo apt-get install bc  # 对于Debian/Ubuntu系统
sudo yum install bc      # 对于CentOS/RHEL系统

ip link show  # 查看系统中的所有网卡名称

chmod +x script_name.sh  # 添加执行权限
sudo ./script_name.sh     # 以root权限运行脚本