Linux---常用shell脚本

目录

 一.网络服务

开启network服务

 网口IP配置

 聚合口配置

前言

秋招拿到了科大讯飞的offer，可是由于某些原因无法完成三方签署，心情还是比较失落的，或许写一篇技术博客，活跃一下大脑思维也是一种不错的放松方式。

 一.网络服务

开启network服务

此脚本用于关闭NetworkManger服务重启network防止服务冲突导致IP配置无法生效

#!/bin/bash

# 获取 NetworkManager 的 Active 状态（去除括号）
status=$(systemctl status NetworkManager | grep 'Active:' | awk '{print $3}' | tr -d '()')

# 检查状态是否不是 dead
if [ "$status" != "dead" ]; then
    echo "NetworkManager is not dead. Stopping NetworkManager and restarting network..."

    # 停止 NetworkManager
    systemctl stop NetworkManager

    # 检查 systemctl stop 的退出状态
    if [ $? -ne 0 ]; then
        echo "Failed to stop NetworkManager."
        exit 1
    fi

    # 重启 network 服务（注意：这个服务名可能因系统而异，例如在某些系统上可能是 'networking'）
    systemctl restart network

    # 检查 systemctl restart 的退出状态
    if [ $? -ne 0 ]; then
        echo "Failed to restart network service."
        exit 1
    fi

    echo "NetworkManager stopped and network service restarted successfully."
else
    echo "NetworkManager

 网口IP配置

此脚本用于配置网口IP地址，简化命令行操作

#!/bin/bash
interfaces=$(ip a | awk '/^[0-9]: / {printf "%s ", $2} END {print ""}')
echo "可选择网卡如下：$interfaces"
read -p "请输入网口：" eth
read -p "请输入IP：" eth_ip
read -p "请输入mask:" eth_mask
echo "IPADDR=$eth_ip" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "NETMASK=$eth_mask" >> /etc/sysconfig/network-scripts/ifcfg-$eth
echo "正在重启网络"
systemctl restart network
echo "重启成功"

 聚合口配置

此脚本用于自动配置聚合口

#!/bin/bash
status=$(systemctl status NetworkManager | grep 'Active:' | awk '{print $3}' | tr -d '()')
if [ "$status" != "dead" ]
then
    echo "NetworkManager服务已开启"
else
    # 开启 NetworkManager
    echo "正在重启NetworkManager"
    systemctl restart NetworkManager
    echo "重启成功"
fi

# 检查是否存在 bond0 连接
if nmcli connection show | grep -q 'bond0'; then
    echo "Warning: 'bond0' connection already exists."
    exit 1  # 或者执行其他适当的操作，例如删除现有连接再重新创建
fi

if [ $# -ne 3 ]; then
    echo "Usage: $0 <ip_address> <interface1> <interface2>"
    exit 1
fi

ip_address=$1
interface1=$2
interface2=$3


nmcli connection add type bond con-name bond0 ifname bond0 bond.options "mode=active-backup,miimon=100"
nmcli connection add type ethernet slave-type bond con-name bond0-port1 ifname ${interface1} master bond0
nmcli connection add type ethernet slave-type bond con-name bond0-port2 ifname ${interface2} master bond0
nmcli connection modify bond0 ipv4.addresses ${ip_address}/24 ipv4.method manual  connection.autoconnect yes
nmcli connection modify bond0 connection.autoconnect-slaves 1
nmcli connection up bond0
echo "Bond connection created successfully."

总结