runlevel(8) — Справочная страница Linux

RUNLEVEL(8)                     runlevel                     RUNLEVEL(8)

НАЗВАНИЕ

       runlevel - Print previous and current SysV runlevel

СИНТАКСИС

       runlevel [options...]

ОБЗОР

       "Runlevels" are an obsolete way to start and stop groups of
       services used in SysV init. systemd provides a compatibility
       layer that maps runlevels to targets, and associated binaries
       like runlevel. Nevertheless, only one runlevel can be "active" at
       a given time, while systemd can activate multiple targets
       concurrently, so the mapping to runlevels is confusing and only
       approximate. Runlevels should not be used in new code, and are
       mostly useful as a shorthand way to refer the matching systemd
       targets in kernel boot parameters.

       Table 1. Mapping between runlevels and systemd targets
       ┌──────────┬───────────────────┐
       │ Runlevel │ Target            │
       ├──────────┼───────────────────┤
       │ 0        │ poweroff.target   │
       ├──────────┼───────────────────┤
       │ 1        │ rescue.target     │
       ├──────────┼───────────────────┤
       │ 2, 3, 4  │ multi-user.target │
       ├──────────┼───────────────────┤
       │ 5        │ graphical.target  │
       ├──────────┼───────────────────┤
       │ 6        │ reboot.target     │
       └──────────┴───────────────────┘

ОПИСАНИЕ

       runlevel prints the previous and current SysV runlevel if they
       are known.

       The two runlevel characters are separated by a single space
       character. If a runlevel cannot be determined, N is printed
       instead. If neither can be determined, the word "unknown" is
       printed.

       Unless overridden in the environment, this will check the utmp
       database for recent runlevel changes.

ПАРАМЕТРЫ

       The following option is understood:

       --help
           Print a short help text and exit.

КОД ВЫХОДА

       If one or both runlevels could be determined, 0 is returned, a
       non-zero failure code otherwise.

ОКРУЖЕНИЕ

       $RUNLEVEL
           If $RUNLEVEL is set, runlevel will print this value as
           current runlevel and ignore utmp.

       $PREVLEVEL
           If $PREVLEVEL is set, runlevel will print this value as
           previous runlevel and ignore utmp.

ФАЙЛЫ

       /run/utmp
           The utmp database runlevel reads the previous and current
           runlevel from.

           Added in version 237.

СМОТРИТЕ ТАКЖЕ

       systemd(1), systemd.target(5), systemctl(1)

КОЛОФОН

       This page is part of the systemd (systemd system and service
       manager) project.  Information about the project can be found at
       ⟨http://www.freedesktop.org/wiki/Software/systemd⟩.  If you have
       a bug report for this manual page, see
       ⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.
       This page was obtained from the project's upstream Git repository
       ⟨https://github.com/systemd/systemd.git⟩ on 2024-06-14.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2024-06-13.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       man-pages@man7.org

systemd 257~devel                                            RUNLEVEL(8)

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