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unlink
===
系统调用函数unlink去删除指定的文件
## 补充说明
**unlink命令** 用于系统调用函数unlink去删除指定的文件。和rm命令作用一样都是删除文件。
### 语法
```
unlink(选项)(参数)
```
### 选项
```
--help显示帮助
--version显示版本号。
```
### 参数
文件:指定要删除的文件。
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