shell脚本—快速修改centos网络配置

shell-文本中自行修改想要的配置

#!/bin/bash# 网卡名称
eth="eth0"# IP 地址
ipaddr="192.168.1.100"# 子网掩码
netmask="255.255.255.0"# 网关
gateway="192.168.1.1"# 写入配置文件
echo "BOOTPROTO=static" > /etc/sysconfig/network-scripts/ifcfg-$eth
echo "DEVICE=$eth" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "ONBOOT=yes" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "IPADDR=$ipaddr" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "NETMASK=$netmask" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "GATEWAY=$gateway" >> /etc/sysconfig/network-scripts/ifcfg-$eth# 重启网络服务
systemctl restart network

• #!/bin/bash：这是指定脚本使用的解释器为 Bash。
• echo "BOOTPROTO=static" > /etc/sysconfig/network-scripts/ifcfg-$eth：
  • 使用输出重定向将指定内容写入到指定的网络配置文件（根据网卡名称）中。
    • 后面也是将相应的配置信息添加到该文件中。
• systemctl restart network：使用 systemctl 命令重启网络服务，使新的配置生效。

shell-加入read交互式脚本

#!/bin/bash# 提示输入网卡名称
echo "请输入网卡名称："
read eth# 提示输入 IP 地址
echo "请输入 IP 地址："
read ipaddr# 提示输入子网掩码
echo "请输入子网掩码："
read netmask# 提示输入网关
echo "请输入网关："
read gateway# 写入配置文件
echo "BOOTPROTO=static" > /etc/sysconfig/network-scripts/ifcfg-$eth
echo "DEVICE=$eth" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "ONBOOT=yes" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "IPADDR=$ipaddr" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "NETMASK=$netmask" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "GATEWAY=$gateway" >> /etc/sysconfig/network-scripts/ifcfg-$eth# 重启网络服务
systemctl restart network

• echo "请输入网卡名称："：使用 echo 命令输出提示信息。
• 接下来的几行类似，分别提示并读取 IP 地址、子网掩码、网关等信息，并赋值给相应变量。
•  read eth：使用 read 命令读取用户输入的内容，并将其赋值给变量 eth。、

shell-配置多网卡

#!/bin/bash# 网卡 1 配置
echo "配置网卡 1"
echo "请输入网卡 1 的名称："
read eth1_name
echo "请输入网卡 1 的 IP 地址："
read eth1_ip
echo "请输入网卡 1 的子网掩码："
read eth1_mask
echo "请输入网卡 1 的网关："
read eth1_gatewayecho "BOOTPROTO=static" > /etc/sysconfig/network-scripts/ifcfg-$eth1_name
echo "DEVICE=$eth1_name" >> /etc/sysconfig/network-scripts/ifcfg-$eth1_name
echo "ONBOOT=yes" >> /etc/sysconfig/network-scripts/ifcfg-$eth1_name
echo "IPADDR=$eth1_ip" >> /etc/sysconfig/network-scripts/ifcfg-$eth1_name
echo "NETMASK=$eth1_mask" >> /etc/sysconfig/network-scripts/ifcfg-$eth1_name
echo "GATEWAY=$eth1_gateway" >> /etc/sysconfig/network-scripts/ifcfg-$eth1_name# 网卡 2 配置（可根据需要添加更多类似的部分）
echo "配置网卡 2"
echo "请输入网卡 2 的名称："
read eth2_name
echo "请输入网卡 2 的 IP 地址："
read eth2_ip
echo "请输入网卡 2 的子网掩码："
read eth2_mask
echo "请输入网卡 2 的网关："
read eth2_gatewayecho "BOOTPROTO=static" > /etc/sysconfig/network-scripts/ifcfg-$eth2_name
echo "DEVICE=$eth2_name" >> /etc/sysconfig/network-scripts/ifcfg-$eth2_name
echo "ONBOOT=yes" >> /etc/sysconfig/network-scripts/ifcfg-$eth2_name
echo "IPADDR=$eth2_ip" >> /etc/sysconfig/network-scripts/ifcfg-$eth2_name
echo "NETMASK=$eth2_mask" >> /etc/sysconfig/network-scripts/ifcfg-$eth2_name
echo "GATEWAY=$eth2_gateway" >> /etc/sysconfig/network-scripts/ifcfg-$eth2_namesystemctl restart network

 shell-配置单网卡多ip

#!/bin/bash# 提示输入网卡名称
echo "请输入网卡名称："
read eth# 配置第一个 IP
echo "请输入第一个 IP 地址："
read ip1
echo "请输入第一个子网掩码："
read mask1echo "BOOTPROTO=static" > /etc/sysconfig/network-scripts/ifcfg-$eth
echo "DEVICE=$eth" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "ONBOOT=yes" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "IPADDR=$ip1" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "NETMASK=$mask1" >> /etc/sysconfig/network-scripts/ifcfg-$eth# 配置第二个 IP
echo "请输入第二个 IP 地址："
read ip2
echo "请输入第二个子网掩码："
read mask2echo "IPADDR2=$ip2" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "NETMASK2=$mask2" >> /etc/sysconfig/network-scripts/ifcfg-$ethsystemctl restart network