linux man page for nologin

NOLOGIN(8)						    System Management Commands							NOLOGIN(8)

NAME
       nologin - politely refuse a login

SYNOPSIS
       nologin

DESCRIPTION
       The nologin command displays a message that an account is not available and exits non-zero. It is intended as a replacement shell field for
       accounts that have been disabled.

       To disable all logins, investigate nologin(5).

SEE ALSO
       login(1), nologin(5).

HISTORY
       The nologin command appearred in BSD 4.4.

System Management Commands					    06/24/2011								NOLOGIN(8)