#Bash 的 nologin 命令
nologin
功能
拒绝用户登录。
类型
可执行文件（/usr/sbin/nologin）。
#示例
$ 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
#推荐阅读
#手册
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)