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Manual page for reboot(1M)

reboot - restart the operating system

SYNOPSIS

/usr/sbin/reboot [ -dlnq ] [ boot arguments ]

AVAILABILITY

SUNWcsu

DESCRIPTION

reboot restarts the kernel. The kernel is loaded into memory by the PROM monitor, which transfers control to the loaded kernel.

Although reboot can be run by the super-user at any time, shutdown.1m is normally used first to warn all users logged in of the impending loss of service. See shutdown.1m for details.

reboot performs a sync.1m operation on the disks, and then a multi-user reboot is initiated. See init.1m for details.

reboot normally logs the reboot to the system log daemon, syslogd.1m and places a shutdown record in the login accounting file /var/adm/wtmp. These actions are inhibited if the -n or -q options are present.

Normally, the system will reboot itself at power-up or after crashes.

OPTIONS

-d: Dump system core before rebooting. This option is provided for compatibility, but is not supported by the underlying reboot.3c call.
-l: Suppress sending a message to the system log daemon, syslogd.1m about who executed reboot.
-n: Avoid the sync.1m operation. This option can be used if a disk or the processor is on fire.
-q: Quick. Reboot quickly and ungracefully, without shutting down running processes first.
boot arguments: These arguments are accepted for compatibility, and are passed unchanged to the uadmin.2 system call.
: On x86 systems only, note that currently, boot arguments are not passed on to the boot program, so they have no effect. You must type in the arguments when responding to the boot prompt ">" to have the desired effect.

EXAMPLES

In the example below, the delimiter `--' (two hyphens) must be used to separate the options of reboot from the arguments of boot.1m

: example# reboot -dl -- -rv

FILES

/var/adm/wtmp: login accounting file