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dris
===
显示和清空目录堆栈中的内容
## 补充说明
**dris命令** 用于显示和清空目录堆栈中的内容。
### 语法
```shell
dris(选项)
```
### 选项
+n:显示从左边算起第n笔的目录;
-n:显示从右边算起第n笔的目录;
-l:显示目录完整的记录。