我在自己一台老旧的DELL电脑上安装了cent os7作为平常的开发服务器，这台笔记本改的服务器一直都不会关机，这时候需要：合上笔记本盖子（显示屏关闭），但是SSH远程在操作此机器，则希望合盖不睡眠（包括网络正常使用）
更多请看（www.omob.cc）
编辑下列文件：/etc/systemd/logind.conf
- #HandlePowerKey按下电源键后的行为，默认power off
- #HandleSleepKey 按下挂起键后的行为，默认suspend
- #HandleHibernateKey按下休眠键后的行为，默认hibernate
- #HandleLidSwitch合上笔记本盖后的行为，默认suspend（改为lock；即合盖不休眠）在原文件中，还要去掉前面的#
运行：systemctl restart systemd-logind就会生效。
附上运行演示：
[root@thinkcent thinktik]# vim /etc/systemd/logind.conf
# This file is part of systemd.
#
# systemd is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# Entries in this file show the compile time defaults.
# You can change settings by editing this file.
# Defaults can be restored by simply deleting this file.
#
# See logind.conf(5) for details.
[Login]
#NAutoVTs=6
#ReserveVT=6
#KillUserProcesses=no
#KillOnlyUsers=
#KillExcludeUsers=root
#InhibitDelayMaxSec=5
#HandlePowerKey=poweroff
#HandleSuspendKey=suspend
#HandleHibernateKey=hibernate
# 修改这个就可以
HandleLidSwitch=lock
#HandleLidSwitchDocked=ignore
#PowerKeyIgnoreInhibited=no
#SuspendKeyIgnoreInhibited=no
#HibernateKeyIgnoreInhibited=no
#LidSwitchIgnoreInhibited=yes
#IdleAction=ignore
#IdleActionSec=30min
#RuntimeDirectorySize=10%
#RemoveIPC=no
#UserTasksMax=
[root@thinkcent thinktik]# systemctl restart systemd-logind