| .TH NOLOGIN 8 "September 2013" "util-linux" "System Administration" |
| .SH NAME |
| nologin \- politely refuse a login |
| .SH SYNOPSIS |
| .B nologin |
| .RB [ \-V ] |
| .RB [ \-h ] |
| .SH DESCRIPTION |
| .B nologin |
| displays a message that an account is not available and exits non-zero. It is |
| intended as a replacement shell field to deny login access to an account. |
| .PP |
| If the file /etc/nologin.txt exists, nologin displays its contents to the |
| user instead of the default message. |
| .PP |
| The exit code returned by |
| .B nologin |
| is always 1. |
| .PP |
| .SH OPTIONS |
| .IP "\fB\-h, \-\-help\fP" |
| Display help text and exit. |
| .IP "\fB-V, \-\-version" |
| Display version information and exit. |
| .SH NOTES |
| .B nologin |
| is a per-account way to disable login (usually used for system accounts like http or ftp). |
| .BR nologin (8) |
| uses /etc/nologin.txt as an optional source for a non-default message, the login |
| access is always refused independently of the file. |
| .PP |
| .BR pam_nologin (8) |
| PAM module usually prevents all non-root users from logging into the system. |
| .BR pam_nologin (8) |
| functionality is controlled by /var/run/nologin or the /etc/nologin file. |
| .SH AUTHORS |
| .UR kzak@redhat.com |
| Karel Zak |
| .UE |
| .SH SEE ALSO |
| .BR login (1), |
| .BR passwd (5), |
| .BR pam_nologin (8) |
| .SH HISTORY |
| The |
| .B nologin |
| command appeared in 4.4BSD. |
| .SH AVAILABILITY |
| The nologin command is part of the util-linux package and is available from |
| .UR ftp://\:ftp.kernel.org\:/pub\:/linux\:/utils\:/util-linux/ |
| Linux Kernel Archive |
| .UE . |
