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nologin(4) [opensolaris man page]

nologin(4)							   File Formats 							nologin(4)

NAME
nologin - message displayed to users attempting to log on in the process of a system shutdown SYNOPSIS
/etc/nologin DESCRIPTION
The /etc/nologin file contains the message displayed to users attempting to log on to a machine in the process of being shutdown. After displaying the contents of the nologin file, the login procedure terminates, preventing the user from logging onto the machine. This procedure is preferable to terminating a user's session by shutdown shortly after the user has logged on. Logins by super-user are not affected by this procedure. The message contained in the nologin file is editable by super-user. A typical nologin file contains a message similar to: NO LOGINS: System going down in 10 minutes. SEE ALSO
login(1), rlogin(1), telnet(1), shutdown(1M) SunOS 5.11 21 Dec 1995 nologin(4)

Check Out this Related Man Page

NOLOGIN(5)						      BSD File Formats Manual							NOLOGIN(5)

NAME
nologin -- disallow logins DESCRIPTION
Programs such as login(1) disallow logins if the nologin file exists. The programs display the contents of nologin to the user if possible and interrupt the login sequence. This makes it simple to temporarily prevent incoming logins systemwide. To disable logins on a per-account basis, investigate nologin(8). SECURITY
The nologin file is ignored for user root by default. IMPLEMENTATION NOTES
The nologin feature is implemented through login.conf(5), which allows to change the pathname of the file and to extend the list of users exempt from temporary login restriction. PAM-aware programs can be selectively configured to respect nologin using the pam_nologin(8) module via pam.conf(5). The nologin file will be removed at system boot if it resides in /var/run and cleanvar_enable is set to ``YES'' in rc.conf(5), which is default. Therefore system reboot can effectively re-enable logins. FILES
/var/run/nologin default location of nologin SEE ALSO
login(1), login.conf(5), pam.conf(5), rc.conf(5), nologin(8), pam_nologin(8), shutdown(8) BSD
May 10, 2007 BSD

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