> For the complete documentation index, see [llms.txt](https://wiki.clay-wangzhi.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.clay-wangzhi.com/shell/part1/02_starting_off_with_a_sha_bang/02_2_preliminary_exercises.md).

# 2.2 牛刀小试

1. 系统管理员通常会写一些脚本来完成自动化工作。试举例说明使用脚本的便利之处。
2. 请尝试写一个脚本。调用脚本，会打印当前系统时间和日期，所有已登录的用户和系统运行时间。并将这些信息保存到一个日志文件中。


---

# Agent Instructions
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## Querying This Documentation
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```

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