在 GNOME 中禁用关机和注销

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原英文标题：Disabling Shutdown and Logout in GNOME

Use this extension to remove the shutdown button： https://github.com/mmartinortiz/RmPwOffBtn/tree/keeping-shutdown-object

And also disabling shutdown in systemctl

systemctl mask poweroff.target

To prevent the user logging out in gnome:

gsettings set org.gnome.desktop.lockdown disable-lock-screen true
gsettings set org.gnome.desktop.lockdown disable-log-out true
gsettings set org.gnome.desktop.lockdown disable-user-switching true