Section: Linux Programmer's Manual (5)
nologin - prevent unprivileged users from logging into the system
If the file /etc/nologin
exists and is readable,
will allow access only to root.
Other users will
be shown the contents of this file and their logins will be refused.
This provides a simple way of temporarily disabling all unprivileged logins.
This page is part of release 5.02 of the Linux
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