Путеводитель по Руководству Linux

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   sulogin    ( 8 )

однопользовательский вход (single-user login)

Имя (Name)

sulogin - single-user login


Синопсис (Synopsis)

sulogin [options] [tty]


Описание (Description)

sulogin is invoked by init when the system goes into single-user mode.

The user is prompted:

Give root password for system maintenance (or type Control-D for normal startup):

If the root account is locked and --force is specified, no password is required.

sulogin will be connected to the current terminal, or to the optional tty device that can be specified on the command line (typically /dev/console).

When the user exits from the single-user shell, or presses control-D at the prompt, the system will continue to boot.


Параметры (Options)

-e, --force
           If the default method of obtaining the root password from the
           system via getpwnam(3) fails, then examine /etc/passwd and
           /etc/shadow to get the password. If these files are damaged
           or nonexistent, or when root account is locked by '!' or '*'
           at the begin of the password then sulogin will start a root
           shell without asking for a password.

Only use the -e option if you are sure the console is physically protected against unauthorized access.

-p, --login-shell Specifying this option causes sulogin to start the shell process as a login shell.

-t, --timeout seconds Specify the maximum amount of time to wait for user input. By default, sulogin will wait forever.

-h, --help Display help text and exit.

-V, --version Display version information and exit.


Окружение (Environment)

sulogin looks for the environment variable SUSHELL or sushell to determine what shell to start. If the environment variable is not set, it will try to execute root's shell from /etc/passwd. If that fails, it will fall back to /bin/sh.