NOLOGINSection: Linux Programmer's Manual (5)
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NAMEnologin - prevent unprivileged users from logging into the system
DESCRIPTIONIf the file /etc/nologin exists and is readable, login(1) 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.
SEE ALSOlogin(1), shutdown(8)
COLOPHONThis page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
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