Create README.md

ddns/README.md

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+# ddns 更新脚本
+
+这个脚本适用于 openwrt 和 ddwrt 路由动态更新域名。理论上支持所有可以运行 `shell (/bin/sh)` 脚本的 `linux` 环境。
+
+## openwrt
+
+**1\. 下载脚本**
+
+cloudxns:
+
+```
+wget https://raw.githubusercontent.com/xdtianyu/scripts/master/ddns/cloudxns.sh
+wget https://raw.githubusercontent.com/xdtianyu/scripts/master/ddns/cloudxns.conf
+chmod +x cloudxns.sh
+```
+
+dnspod:
+
+```
+wget https://raw.githubusercontent.com/xdtianyu/scripts/master/ddns/dnspod.sh
+wget https://raw.githubusercontent.com/xdtianyu/scripts/master/ddns/dnspod.conf
+chmod +x dnspod.sh
+```
+
+**2\. 配置**
+
+cloudxns:
+
+```
+API_KEY="YOUR_API_KEY"
+SECRET_KEY="YOUR_SECRET_KEY"
+DOMAIN="example.com"
+HOST="ddns"
+LAST_IP_FILE="/tmp/.LAST_IP"
+```
+
+dnspod:
+
+```
+ACCOUNT="xxxxxx@gmail.com"
+PASSWORD="xxxxxxxxxx"
+DOMAIN="xxxx.xxx.org"
+RECORD_LINE="默认"
+```
+
+**3\. 运行测试**
+
+dnspod: `./dnspod.sh dnspod.conf`
+
+cloudxns: `./cloudxns.sh cloudxns.conf`
+
+**4\. 添加到 cron 定时任务**
+
+```
+/etc/init.d/cron enable
+crontab -e
+```
+
+添加如下内容，注意修改路径
+
+cloudxns:
+
+```
+*/3 * * * * /root/ddns/cloudxns.sh /root/ddns/cloudxns.conf >> /root/ddns/cloudxns.log
+```
+
+dnspod:
+
+```
+*/3 * * * * /root/ddns/dnspod.sh /root/ddns/dnspod.conf >> /root/ddns/dnspod.log
+```
+
+## ddwrt
+
+**1\. 下载脚本**
+
+下载脚本及配置文件,保存文件到 `/jffs` 及 `/opt` 等不会重启丢失的目录，注意可能需要在网页管理页面先启用 `jffs`
+
+dnspod:
+
+```
+curl -k -s https://raw.githubusercontent.com/xdtianyu/scripts/master/ddns/dnspod.sh
+curl -k -s https://raw.githubusercontent.com/xdtianyu/scripts/master/ddns/dnspod.conf
+chmod +x dnspod.sh
+```
+
+cloudxns:
+
+```
+wget https://raw.githubusercontent.com/xdtianyu/scripts/master/ddns/cloudxns.sh
+wget https://raw.githubusercontent.com/xdtianyu/scripts/master/ddns/cloudxns.conf
+chmod +x cloudxns.sh
+```
+
+
+**2\. 修改配置文件**
+
+dnspod:
+
+```
+ACCOUNT="xxxxxx@gmail.com"
+PASSWORD="xxxxxxxxxx"
+DOMAIN="xxxx.xxx.org"
+RECORD_LINE="默认"
+```
+
+cloudxns:
+
+```
+API_KEY="YOUR_API_KEY"
+SECRET_KEY="YOUR_SECRET_KEY"
+DOMAIN="example.com"
+HOST="ddns"
+LAST_IP_FILE="/tmp/.LAST_IP"
+```
+
+**3\. 运行测试**
+
+dnspod: `./dnspod.sh dnspod.conf`
+
+cloudxns: `./cloudxns.sh cloudxns.conf`
+
+**4\. 添加 cron 定时任务**
+
+ddwrt 在网页管理页面添加 cron 定时任务，注意修改命令的路径:
+
+dnspod:
+
+```
+*/3 * * * * root /jffs/ddns/dnspod.sh /jffs/ddns/dnspod.conf >> /jffs/ddns/cloudxns.log
+```
+
+cloudxns:
+
+```
+*/3 * * * * root /jffs/ddns/cloudxns.sh /jffs/ddns/cloudxns.conf >> /jffs/ddns/cloudxns.log
+```
+
+## 更多细节内容可以参考我之前写的博客
+
+[ddwrt路由/linux动态解析ip(ddns)到dnspod配置](https://www.xdty.org/1841)
+
+[用于ddwrt或openwrt的cloudxns动态域名更新shell脚本](https://www.xdty.org/1907)