:~$ man -k sleep #简单搜索目录名称,符合条件的章节都会显示出来
clock_nanosleep (2) – high-resolution sleep with specifiable clock
nanosleep (2) – high-resolution sleep
rtcwake (8) – enter a system sleep state until specified wakeup time
sleep (1) – delay for a specified amount of time
sleep (3) – sleep for the specified number of seconds
sleep.conf.d (5) – Suspend and hibernation configuration file
systemd-hibernate.service (8) – System sleep state logic
systemd-hybrid-sleep.service (8) – System sleep state logic
systemd-sleep (8) – System sleep state logic
systemd-sleep.conf (5) – Suspend and hibernation configuration file
systemd-suspend.service (8) – System sleep state logic
usleep (3) – suspend execution for microsecond intervals
:~$ man 1 sleep #查看第一章节的介绍
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