NAME¶
reboot, halt, poweroff - reboot or stop the system
SYNOPSIS¶
reboot [
OPTION]... [
REBOOTCOMMAND]
halt [
OPTION]...
poweroff [
OPTION]...
DESCRIPTION¶
These programs allow a system administrator to
reboot,
halt or
poweroff the system.
When called with
--force or when in runlevel
0 or
6, this
tool invokes the
reboot(2) system call itself (with REBOOTCOMMAND
argument passed) and directly reboots the system. Otherwise this simply
invokes the
shutdown(8) tool with the appropriate arguments without
passing REBOOTCOMMAND argument.
Before invoking
reboot(2), a shutdown time record is first written to
/var/log/wtmp
OPTIONS¶
- -f, --force
- Does not invoke shutdown(8) and instead performs the actual action
you would expect from the name.
- -p, --poweroff
- Instructs the halt command to instead behave as
poweroff.
- -w, --wtmp-only
- Does not call shutdown(8) or the reboot(2) system call and
instead only writes the shutdown record to /var/log/wtmp
- --verbose
- Outputs slightly more verbose messages when rebooting, useful for
debugging problems with shutdown.
ENVIRONMENT¶
- RUNLEVEL
- reboot 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 runlevel record being replaced by a shutdown time
record.
- /var/log/wtmp
- A new runlevel record for the shutdown time will be appended to this
file.
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¶
shutdown(8) telinit(8) runlevel(8)