sleep [OPTION]... NUMBER[SUFFIX]...
!subtitle:功能
延时一段时间。
!subtitle:类型
可执行文件（/usr/bin/sleep），属于 coreutils。
!subtitle:参数
OPTION 选项：
--help - 显示帮助
--version - 显示版本
NUMBER - 要延时的时间
SUFFIX - 单位后缀：
s - 秒（默认）
m - 分钟
h - 小时
d - 天
$ sleep 1 # 延时 1 秒
$ sleep 1 2 3 # 延时 6 秒
$ sleep 3m # 延时 3 分钟
$ sleep 3m 20 # 延时 3 分 20 秒
SLEEP(1) User Commands SLEEP(1)
NAME
sleep - delay for a specified amount of time
SYNOPSIS
sleep NUMBER[SUFFIX]...
sleep OPTION
DESCRIPTION
Pause for NUMBER seconds. SUFFIX may be 's' for seconds (the default),
'm' for minutes, 'h' for hours or 'd' for days. NUMBER need not be an
integer. Given two or more arguments, pause for the amount of time
specified by the sum of their values.
--help display this help and exit
--version
output version information and exit
AUTHOR
Written by Jim Meyering and Paul Eggert.
REPORTING BUGS
GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>
COPYRIGHT
Copyright © 2023 Free Software Foundation, Inc. License GPLv3+: GNU
GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
sleep(3)
Full documentation <https://www.gnu.org/software/coreutils/sleep>
or available locally via: info '(coreutils) sleep invocation'
GNU coreutils 9.4 April 2024 SLEEP(1)