linux 一个网卡网卡

# 检查网卡状态
ip link show

# 启用网卡
sudo ip link set eth0 up

# 或者通过ifconfig启用
sudo ifconfig eth0 up

# 查看当前网络配置
ip addr show

# 编辑网络配置文件（以eth0为例）
sudo nano /etc/network/interfaces

# 添加或修改以下内容
auto eth0
iface eth0 inet static
    address 192.168.1.100
    netmask 255.255.255.0
    gateway 192.168.1.1

# 重启网络服务
sudo systemctl restart networking

# 查看网卡信息
lspci | grep -i net

# 安装或更新驱动
sudo apt-get update
sudo apt-get install <driver-package>

import socket
import fcntl
import struct
import array

def get_ip_address(ifname):
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    try:
        return socket.inet_ntoa(fcntl.ioctl(
            s.fileno(),
            0x8915,  # SIOCGIFADDR
            struct.pack('256s', ifname[:15].encode('utf-8'))
        )[20:24])
    except IOError:
        return None

interfaces = ['eth0', 'wlan0', 'enp0s3']  # 常见网卡名称
for iface in interfaces:
    ip = get_ip_address(iface)
    if ip:
        print(f'{iface}: {ip}')
    else:
        print(f'{iface}: No IP address found')