shutdown command is used to shut down the system and is equivalent to the halt command.
Syntax format: shutdown [parameter]
Common parameters
Example
# 立即关闭系统shutdown -h now # 立即重启系统shutdown -r now # 10分钟后关机，同时发送消息给登录用户shutdown +10 "马上关机啦，赶快保存资料，不然一天白忙啦！" # 设定系统关闭时间也就是定时关机，如20:30 shutdown -h 20:30 # 如果之前设定了定时关机，可以取消shutdown -c
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