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# sleep
> 延迟指定的一段时间。
> 更多信息：<https://pubs.opengroup.org/onlinepubs/9699919799/utilities/sleep.html>.
- 按秒数延迟：
`sleep {{seconds}}`
- 在20秒延迟后执行指定命令：
`sleep 20 && {{command}}`