nologin - Man Page

• Set a user's login shell to nologin to prevent the user from logging in: chsh -s user nologin
• Customize message for users with the login shell of nologin: echo "declined_login_message" > /etc/nologin.txt

tldr.sh

nologin [-V] [-h]

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.

If the file /etc/nologin.txt exists, nologin displays its contents to the user instead of the default message.

The exit status returned by nologin is always 1.

-c, --command command

--init-file

-i --interactive

--init-file file

-i, --interactive

-l, --login

--noprofile

--norc

--posix

--rcfile file

-r,  --restricted

These shell command-line options are ignored to avoid nologin error.

-h,  --help

Display help text and exit.

-V,  --version

Print version and exit.

nologin is a per-account way to disable login (usually used for system accounts like http or ftp). nologin uses /etc/nologin.txt as an optional source for a non-default message, the login access is always refused independently of the file.

pam_nologin(8) PAM module usually prevents all non-root users from logging into the system. pam_nologin(8) functionality is controlled by /var/run/nologin or the /etc/nologin file.

The nologin command appeared in 4.4BSD.

Karel Zak

login(1), passwd(5), pam_nologin(8)

For bug reports, use the issue tracker at https://github.com/util-linux/util-linux/issues.

The nologin command is part of the util-linux package which can be downloaded from Linux Kernel Archive.