DESCRIPTION
       if  the  file  /etc/nologin  exists, login(1) will allow access only to
       root.  Other users will be shown the contents of this  file  and  their
       logins will be refused.

FILES
       /etc/nologin

SEE ALSO
       login(1), shutdown(8)

COLOPHON
       This  page  is  part of release 3.23 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.