NAME

       telinit - change system runlevel

SYNOPSIS

       telinit [OPTION]...  RUNLEVEL

DESCRIPTION

       telinit may be used to change the system runlevel.

       The RUNLEVEL argument should be one of the multi-user runlevels 2-5, 0 to halt the system,
       6 to reboot the system or 1 to bring the system down into single-user mode.

       Normally you would use the shutdown(8) tool to halt or reboot the system, or to  bring  it
       down to single-user mode.

       RUNLEVEL  may  also  be  S or s which will place the system directly into single-user mode
       without actually stopping processes first, you probably won't want that.

       The runlevel is changed by emitting the runlevel(7) event, which includes the new runlevel
       in  the  RUNLEVEL environment variable as well as the previous runlevel (obtained from the
       environment or from /var/run/utmp) in the PREVLEVEL variable.

       telinit will  write  the  new  runlevel  to  /var/run/utmp  and  append  a  new  entry  to
       /var/log/wtmp.

   Other commands
       telinit  may  be  also used to send basic commands to the init(8) daemon for compatibility
       with System V.  These are:

       Q or q to request that init(8) reload its configuration.  This is rarely  necessary  since
              Upstart  watches  its  configuration  with  inotify(7)  and  is  deprecated  by the
              initctl(8) reload-configuration command.

       U or u to request that the init(8) daemon  re-execute  itself.   This  is  necessary  when
              upgrading  the  Upstart  init(8)  daemon  itself  or  any  of  its dependent system
              libraries to ensure disks can be unmounted cleanly on shutdown.

              Note that if the init daemon is not Upstart, this option will have no effect on the
              running init(8) daemon.

OPTIONS

       -e KEY=VALUE
              This specifies an additional environment variable to be included in the event along
              with RUNLEVEL and PREVLEVEL.

ENVIRONMENT

       RUNLEVEL
              telinit will read the current runlevel from this environment  variable  if  set  in
              preference to reading from /var/run/utmp

FILES

       /var/run/utmp
              Where  the  current runlevel will be read from; this file will also be updated with
              the new runlevel.

       /var/log/wtmp
              A new runlevel record will be appended to this file for the new runlevel.

NOTES

       The Upstart init(8) daemon does not keep track  of  runlevels  itself,  instead  they  are
       implemented entirely by its userspace tools.

       See runlevel(7) for more details.

AUTHOR

       Written by Scott James Remnant <scott@netsplit.com>

REPORTING BUGS

       Report bugs at <https://launchpad.net/upstart/+bugs>

COPYRIGHT

       Copyright © 2009 Canonical Ltd.
       This  is  free software; see the source for copying conditions.  There is NO warranty; not
       even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

SEE ALSO

       runlevel(7) init(8) initctl(8) shutdown(8) runlevel(8)