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Shell脚本-DNS域名解析格式化

news 来源：原创 2024/9/19 3:00:21

Shell脚本-DNS域名解析格式化

大家好，我是秋意零。

今天，分享一个Shell脚本。大家不一定用的上，但可以参考；再一个是可以通过下列需求进行练手，初学者可以试试！

脚本还有优化的地方（懒得改了hh）有兴趣得朋友可以简化一下下列脚本。

需求如下：

脚本需要实现下列三个功能，分别是添加、删除和修改。对应下列就是格式化前后的效果。

1) 添加dns解析 
格式化前：openapi-test.qiuyl.com 192.168.200.10
格式化后：dnscmd ./RecordAdd qiuyl.com openapi-test A 192.168.200.102) 修改dns解析 openapi-test.qiuyl.com (修改需要先删除解析，避免有两条记录) 
格式化后：echo y| dnscmd ./RecordDelete qiuyl.com openapi-test A 192.168.200.10
格式化后：dnscmd ./RecordAdd qiuyl.com openapi-test A 192.168.200.113) 删除dns解析 openapi-test.qiuyl.com 192.168.200.11
格式化后：echo y| dnscmd ./RecordDelete qiuyl.com openapi-test A 192.168.200.11

1）目录结构

[root@cd0215 dns_jiexi]# ll
total 4
drwxr-xr-x 2 root root   66 Aug  6 17:53 logs  # 存放日志目录
drwxr-xr-x 2 root root   92 Aug  7 17:53 sources # 存放数据源目录
-rw-r--r-- 1 root root 2836 Aug  7 17:48 start.sh# 源文件格式参考（需严格按照下列格式）
[root@cd0215 dns_jiexi]# cat ./sources/dns-add.txt
openapi-test-1.qiuyl.com 192.168.200.10
openapi-test-2.qiuyl.com 192.168.200.11

2）使用说明

[root@cd0215 dns_jiexi]# sh start.sh 
请输入一个命令参数：[ add | del | update ]

3）脚本源码

#!/bin/bash# 文件名称定义
FILE_ADD="./sources/dns-add.txt"
FILE_DEL="./sources/dns-del.txt"
FILE_UPDATE="./sources/dns-update.txt"
FILE_UPDATE_DEL="./sources/dns-update-del.txt"FILE_ADD_LOG="./logs/dns-add.log"
FILE_DEL_LOG="./logs/dns-del.log"
FILE_UPDATE_LOG="./logs/dns-update.log"# 数据读取 函数
readDate_func(){FILE="$1"# 读取并处理每一行while IFS=' ' read -r DNS_FULL_NAME IP; do# 提取域名DNS_FIREST_NAME=$(echo "$DNS_FULL_NAME" | awk -F. '{print $2"."$3}')DNS_SECOND_NAME=$(echo "$DNS_FULL_NAME" | awk -F. '{print $1}')DNS_IP=$IPif [ $FILE == $FILE_ADD ];thendate_funcecho -e "$TIME dnscmd . \e[96m/RecordAdd\e[0m \e[92m$DNS_FIREST_NAME $DNS_SECOND_NAME A $DNS_IP \e[0m" >> $FILE_ADD_LOGelif [ $1 == $FILE_DEL ];thendate_funcecho -e "$TIME echo y |  dnscmd . \e[96mRecordDelete\e[0m \e[92m$DNS_FIREST_NAME $DNS_SECOND_NAME A $DNS_IP \e[0m" >> $FILE_DEL_LOGelif [ $1 == $FILE_UPDATE_DEL ];thendate_funcecho -e "$TIME echo y |  dnscmd . \e[96mRecordDelete\e[0m \e[92m$DNS_FIREST_NAME $DNS_SECOND_NAME A $DNS_IP \e[0m" >> $FILE_UPDATE_LOGelif [ $1 == $FILE_UPDATE ];thendate_funcecho -e "$TIME dnscmd . \e[96m/RecordAdd\e[0m \e[92m$DNS_FIREST_NAME $DNS_SECOND_NAME A $DNS_IP \e[0m" >> $FILE_UPDATE_LOGfidone < "$FILE"
}date_func(){TIME=`date '+%Y-%m-%d %H:%M:%S'`
}add_func(){readDate_func $FILE_ADD
}del_func(){readDate_func $FILE_DEL
}update_func(){readDate_func $FILE_UPDATE_DELreadDate_func $FILE_UPDATE
}# 判断用户对应操作
if [ -z "$1" ];thenecho -e "请输入一个命令参数：\e[92m[ add | del | update ]\e[0m"exit 6
fiif [ $1 == "add" ];thenif [ -f "$FILE_ADD"  ];thenadd_funcif [ $? == "0" ];thenecho -e "add command execution \e[92msuccessful!\e[0m"echo "logs dir: $FILE_ADD_LOG"fielseecho -e "$FILE_ADD \e[93m文件不存在，请创建！\e[0m"exit 1fi
elif [ $1 == "del" ];thenif [ -f "$FILE_DEL"  ];thendel_funcif [ $? == "0" ];thenecho -e "del command execution \e[92msuccessful!\e[0m"echo "logs dir: $FILE_DEL_LOG"fielseecho -e "$FILE_DEL \e[93m文件不存在，请创建！\e[0m"exit 2fi
elif [ $1 == "update" ];thenif [ -f "$FILE_UPDATE_DEL"  ];thenecho -n ""elseecho -e "$FILE_UPDATE_DEL \e[93m文件不存在，请创建！\e[0m"exit 4fiif [ -f "$FILE_UPDATE"  ];thenupdate_funcif [ $? == "0" ];thenecho -e "update command execution \e[92msuccessful!\e[0m"echo "logs dir: $FILE_UPDATE_LOG"fielseecho -e "$FILE_UPDATE \e[93m文件不存在，请创建！\e[0m"exit 5fi
elseecho -e "请输入正确的操作指令：\e[92m[ add | del | update ]\e[0m"
fi