更新

Shell脚本-Centos配置静态IP.sh

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+#!/bin/bash
+
+# 设置静态IP的函数
+set_static_ip() {
+    # 默认值
+    default_ip="192.168.1.100"
+    default_subnet_mask="255.255.255.0"
+    default_gateway="192.168.1.1"
+    default_dns="8.8.8.8"
+
+    # 提示输入IP地址，默认值为$default_ip
+    read -p "请输入静态IP地址（默认：$default_ip）:" ip_address
+    ip_address=${ip_address:-$default_ip}
+
+    # 提示输入子网掩码，默认值为$default_subnet_mask
+    read -p "请输入子网掩码（默认：$default_subnet_mask）:" subnet_mask
+    subnet_mask=${subnet_mask:-$default_subnet_mask}
+
+    # 提示输入网关，默认值为$default_gateway
+    read -p "请输入网关（默认：$default_gateway）:" gateway
+    gateway=${gateway:-$default_gateway}
+
+    # 提示输入DNS，默认值为$default_dns
+    read -p "请输入DNS服务器（默认：$default_dns）:" dns
+    dns=${dns:-$default_dns}
+
+    # 列出网络接口并提示输入接口名称
+    echo "可用的网络接口如下："
+    ip link show | awk -F: '$1 !~ "lo|vir|br|wl|^[^0-9]"{print $2}'
+
+    # 提示输入网络接口名称
+    read -p "请输入网络接口名称：" interface_name
+
+    # 备份当前网络配置文件
+    cp /etc/sysconfig/network-scripts/ifcfg-$interface_name /etc/sysconfig/network-scripts/ifcfg-$interface_name.bak
+
+    # 写入新的配置
+    cat > /etc/sysconfig/network-scripts/ifcfg-$interface_name <<EOL
+DEVICE=$interface_name
+BOOTPROTO=none
+ONBOOT=yes
+IPADDR=$ip_address
+NETMASK=$subnet_mask
+GATEWAY=$gateway
+DNS1=$dns
+EOL
+
+    # 重启网络服务以应用更改
+    if systemctl status NetworkManager &>/dev/null; then
+        systemctl restart NetworkManager
+    else
+        systemctl restart network
+    fi
+
+    echo "静态IP配置已成功应用。"
+}
+
+# 设置动态IP（DHCP）的函数
+set_dynamic_ip() {
+    # 列出网络接口并提示输入接口名称
+    echo "可用的网络接口如下："
+    ip link show | awk -F: '$1 !~ "lo|vir|br|wl|^[^0-9]"{print $2}'
+
+    # 提示输入网络接口名称
+    read -p "请输入网络接口名称：" interface_name
+
+    # 备份当前网络配置文件
+    cp /etc/sysconfig/network-scripts/ifcfg-$interface_name /etc/sysconfig/network-scripts/ifcfg-$interface_name.bak
+
+    # 写入新的DHCP配置
+    cat > /etc/sysconfig/network-scripts/ifcfg-$interface_name <<EOL
+DEVICE=$interface_name
+BOOTPROTO=dhcp
+ONBOOT=yes
+EOL
+
+    # 重启网络服务以应用更改
+    if systemctl status NetworkManager &>/dev/null; then
+        systemctl restart NetworkManager
+    else
+        systemctl restart network
+    fi
+
+    echo "动态IP配置已成功应用。"
+}
+
+# 主脚本逻辑
+read -p "是否设置静态IP？(yes/no): " choice
+
+if [ "$choice" == "yes" ]; then
+    set_static_ip
+else
+    set_dynamic_ip
+fi