RUNLEVEL(8)                                                          runlevel                                                          RUNLEVEL(8)

NAME

       runlevel - Print previous and current SysV runlevel

SYNOPSIS

       runlevel [options...]

OVERVIEW

       "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     |
       +---------+-------------------+

DESCRIPTION

       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.

OPTIONS

       The following option is understood:

       --help
           Print a short help text and exit.

EXIT STATUS

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

ENVIRONMENT

       $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.

FILES

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

SEE ALSO

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

systemd 237                                                                                                                            RUNLEVEL(8)