> For the complete documentation index, see [llms.txt](https://book.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.bsdcn.org/man/man9/resettodr.9.md).

# resettodr.9

`resettodr` — 根据系统时间设置电池后备时钟

## 名称

`resettodr`

## 概要

```c
#include <sys/types.h>
```

```c
#include <sys/systm.h>
```

```c
void
resettodr(void)
```

## 描述

`resettodr` 函数根据系统 `time` 变量的内容设置系统的电池后备时钟。

## 参见

[inittodr(9)](/man/man9/inittodr.9.md), [time(9)](/man/man9/time.9.md)

## 缺陷

在许多系统上，`resettodr` 必须将 `time` 转换为以年、月、日、小时、分钟和秒表示的时间。许多实现可以共享代码，但实际上并没有。


---

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