NAME

reboot − reboot the system

SYNOPSIS

/etc/reboot [ −h | −r ]  [ −n | −s ]  [ −d device ] [ −f lif_filename ] [ −t time ] [ −m message ]

DESCRIPTION

Reboot terminates all currently executing processes, except those essential to the system, then halts or reboots the system.  Reboot with no arguments syncs all disks before rebooting the system.  The options are:

−h Shutdown the system and halt. 

−r Shutdown the system and reboot automatically.  (default)

−n Do not sync the file systems before shutdown. 

−s Sync the file systems before shutdown; for file systems which were cleanly mounted, modify the fs_clean flag from FS_OK to FS_CLEAN.  (default)

−d device Reboot from the specified device.  The device must be a lif volume.  This option cannot be used with -h. 

−f lif_filename Reboot from the specified file.  If the filename is the NULL string, the power up search sequence will be made for a system.  Otherwise, the filename has to follow the lif filename convention.  This option cannot be used with -h. 

−t time The time when reboot will bring the system down.  Time may be the word now (indicating immediate shutdown) or specify a future time in one of two formats: +number and hour:min. The first form brings the system down in number minutes and the second brings the system down at the time of day indicated (as a 24-hour clock). 

−m message At intervals that get closer together as reboot time approaches, message is displayed at the terminals of all users on the system. 

At shutdown time a message is written in the file /usr/adm/shutdownlog (if it exists), containing the time of shutdown, who ran reboot, and the reason.

DEPENDENCIES

Series 500, 800
The -d and -f options and the device and lif_filename parameters are not supported. 

Series 300 Diskless
When reboot is executed on the root server of a cluster, all of the cluster nodes will be rebooted.  Each cluster node will be rebooted by a reboot command executing locally.  The arguments for these local reboot commands will be copied over from the root server’s reboot command, with the exception of the −d and −f options. 

Executing reboot on a non-root server cluster node will only affect that node.  Reboot can be executed only by the super-user. 

AUTHOR

Reboot was developed by HP and the University of California, Berkeley. 

FILES

/usr/adm/shutdownlog shutdown log

SEE ALSO

lif(1), reboot(2). 

Hewlett-Packard Company  —  Version B.1,  May 11, 2021