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+### 使用方法
+編譯執行檔
+```
+$ go build -o ddns main.go
+```
+複製範例設定檔
+```
+$ cp config.default.yml config.yml
+```
+依照需求編輯設定檔
+```
+$ vim config.yml
+```
+執行ddns tool
+```
+$ ./ddns
+```
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