# 8.2.空目录

## 8.2.1. 清理空目录

在卸载 Port 时，必须删除它所创建的空目录。大多数目录会被 [pkg(8)](https://man.freebsd.org/cgi/man.cgi?query=pkg\&sektion=8\&format=html) 自动删除，但对于在 **${PREFIX}** 之外创建的目录或本身为空的目录，则需要额外处理。通常通过为这些目录添加 `@dir` 行来实现。删除时必须先删除子目录，再删除父目录。

```sh
[...]
@dir /var/games/oneko/saved-games
@dir /var/games/oneko
```

## 8.2.2. 创建空目录

Port 安装过程中创建的空目录需要特别注意。在生成软件包时，这些目录必须存在。如果 Port 的代码没有自动创建这些目录，就需要在 **Makefile** 中显式创建：

```makefile
post-install:
	${MKDIR} ${STAGEDIR}${PREFIX}/some/directory
```

像对待其他条目一样将该目录添加进 **pkg-plist**：

```sh
@dir some/directory
```


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