How to Format DNS Domain Resolution Results (Shell Script Guide)

享一個Shell腳本。大家不一定用的上，但可以參考；再一個是可以通過下列需求進行練手，初學者可以試試！

腳本還有優化的地方（懶得改了hh）有興趣得朋友可以簡化一下下列腳本。

需求如下：

腳本需要實現下列三個功能，分別是添加、刪除和修改。對應下列就是格式化前後的效果。

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 192.168.200.10

2)?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 192.168.200.11

3)?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）目錄結構

[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）使用說明

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

3）腳本源碼

#!/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?$1}')
????DNS_IP=$IP
????if?[?$FILE?==?$FILE_ADD?];then
??????date_func
??????echo?-e?"$TIME?dnscmd?.?\e[96m/RecordAdd\e[0m?\e[92m$DNS_FIREST_NAME?$DNS_SECOND_NAME?A?$DNS_IP?\e[0m"?>>?$FILE_ADD_LOG
????elif?[?$1?==?$FILE_DEL?];then
??????date_func
??????echo?-e?"$TIME?echo?y?|??dnscmd?.?\e[96mRecordDelete\e[0m?\e[92m$DNS_FIREST_NAME?$DNS_SECOND_NAME?A?$DNS_IP?\e[0m"?>>?$FILE_DEL_LOG
????elif?[?$1?==?$FILE_UPDATE_DEL?];then
??????date_func
??????echo?-e?"$TIME?echo?y?|??dnscmd?.?\e[96mRecordDelete\e[0m?\e[92m$DNS_FIREST_NAME?$DNS_SECOND_NAME?A?$DNS_IP?\e[0m"?>>?$FILE_UPDATE_LOG
????elif?[?$1?==?$FILE_UPDATE?];then
??????date_func
??????echo?-e?"$TIME?dnscmd?.?\e[96m/RecordAdd\e[0m?\e[92m$DNS_FIREST_NAME?$DNS_SECOND_NAME?A?$DNS_IP?\e[0m"?>>?$FILE_UPDATE_LOG
????fi
??done?<?"$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?$FILE_UPDATE_DEL
??readDate_func?$FILE_UPDATE
}

#?判断用户对应操作
if?[?-z?"$1"?];then
??echo?-e?"请输入一个命令参数：\e[92m[ add | del | update ]\e[0m"
??exit?6
fi

if?[?$1?==?"add"?];then
??if?[?-f?"$FILE_ADD"??];then
????add_func
????if?[?$??==?"0"?];then
??????echo?-e?"add?command?execution?\e[92msuccessful!\e[0m"
??????echo?"logs?dir:?$FILE_ADD_LOG"
????fi
??else
????echo?-e?"$FILE_ADD?\e[93m文件不存在，请创建！\e[0m"
????exit?1
??fi
elif?[?$1?==?"del"?];then
??if?[?-f?"$FILE_DEL"??];then
????del_func
????if?[?$??==?"0"?];then
??????echo?-e?"del?command?execution?\e[92msuccessful!\e[0m"
??????echo?"logs?dir:?$FILE_DEL_LOG"
????fi
??else
????echo?-e?"$FILE_DEL?\e[93m文件不存在，请创建！\e[0m"
????exit?2
??fi
elif?[?$1?==?"update"?];then
??if?[?-f?"$FILE_UPDATE_DEL"??];then
????echo?-n?""
??else
????echo?-e?"$FILE_UPDATE_DEL?\e[93m文件不存在，请创建！\e[0m"
????exit?4
??fi
??if?[?-f?"$FILE_UPDATE"??];then
????update_func
????if?[?$??==?"0"?];then
??????echo?-e?"update?command?execution?\e[92msuccessful!\e[0m"
??????echo?"logs?dir:?$FILE_UPDATE_LOG"
????fi
??else
????echo?-e?"$FILE_UPDATE?\e[93m文件不存在，请创建！\e[0m"
????exit?5
??fi
else
??echo?-e?"请输入正确的操作指令：\e[92m[ add | del | update ]\e[0m"
fi