# Bash 的 nologin 命令

nologin

$ cat /etc/passwd | grep nologin                 # 查看禁止登录的用户
daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin
bin:x:2:2:bin:/bin:/usr/sbin/nologin
sys:x:3:3:sys:/dev:/usr/sbin/nologin
games:x:5:60:games:/usr/games:/usr/sbin/nologin
man:x:6:12:man:/var/cache/man:/usr/sbin/nologin
lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/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).

       If SSH_ORIGINAL_COMMAND is populated it will be logged.

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

HISTORY
       The nologin command appeared in BSD 4.4.

shadow-utils 4.13                 05/30/2024                        NOLOGIN(8)