.TH FSHALT 8
.SH NAME
fshalt, scram, reboot \- halt any local file systems and optionally shut down or reboot the system
.SH SYNOPSIS
.B fshalt
[
.B -r
]
.br
.B reboot
[
.I kernelpath
]
.br
.B scram
.SH DESCRIPTION
.I Fshalt
syncs and halts all local
.IR cwfs (4)
and
.IR hjfs (4)
servers.
If given
.BR -r ,
.I fshalt
will then reboot the machine.
Else it will invoke
.I scram
to shut down the machine.
The halting and rebooting is done by copying all necessary
commands into a
.IR ramfs (4)
file system and changing directory there before attempting to halt
file systems,
so this will work even on standalone machines with their roots on
local file systems.
.PP
.I Reboot
restarts the machine it is invoked on. If an optional
.I kernelpath
is specified then the machine will load and start that
kernel directly instead of returning to the system rom. (see
.IR cons (3)).
.PP
.I Scram
shuts down the machine it is invoked on.
.SH SOURCE
.B /rc/bin/fshalt
.br
.B /rc/bin/reboot
.br
.B /sys/src/cmd/scram.c
.SH SEE ALSO
.IR cons (3),
.IR reboot (8)
.SH BUGS
On standalone machines, it will be impossible to do anything if scram fails
after invoking bare
.IR fshalt .

.I Scram
is limited to the PC and requires APM or ACPI.
.SH HISTORY
.I Scram
first appeared in 9front (May, 2011).