shell脚本实现网络切换
时间: 2023-07-07 15:04:54 浏览: 47
可以使用以下命令来实现网络切换:
```
#!/bin/bash
# Set network interface name and IP address for Net1 and Net2
NET1_IFACE="eth0"
NET1_IP="192.168.1.10"
NET2_IFACE="eth1"
NET2_IP="10.0.0.10"
# Check current default gateway
DEFAULT_GATEWAY=$(ip route show default | awk '/default/ {print $3}')
# If default gateway is set to Net1, switch to Net2
if [ "$DEFAULT_GATEWAY" == "$NET1_IP" ]
then
echo "Switching to Net2"
ip route del default
ip route add default via $NET2_IP dev $NET2_IFACE
# If default gateway is set to Net2, switch to Net1
elif [ "$DEFAULT_GATEWAY" == "$NET2_IP" ]
then
echo "Switching to Net1"
ip route del default
ip route add default via $NET1_IP dev $NET1_IFACE
# If default gateway is not set or is set to an unknown IP address, assume Net1 is the default and switch to Net2
else
echo "Switching to Net2"
ip route add default via $NET2_IP dev $NET2_IFACE
fi
```
在脚本中,首先设置了两个网络接口的名称和IP地址。然后,使用 `ip route show default` 命令来获取当前默认网关的IP地址。如果默认网关是Net1,则将其切换到Net2;如果默认网关是Net2,则将其切换到Net1;如果默认网关未设置或设置为未知的IP地址,则假定Net1是默认网关并将其切换到Net2。