.TH REBOOT 2
.SH NAME
reboot \- close down the system or reboot
.SH SYNTAX
.ft B
.nf
#define _NETBSD_SOURCE 1

#include <unistd.h>

int reboot(int \fIhow\fP)
.fi
.ft P
.SH DESCRIPTION
.B Reboot()
is used to close down the system.  It allows several ways of shutting
down depending on
.IR how :
.PP
.TP 5
.BI "reboot(RBT_DEFAULT)"
Default shut-down action, the same as used when CTRL+ALT+DEL is pressed
on the keyboard.
.TP
.BI "reboot(RBT_HALT)"
Halt the system.
.TP
.BI "reboot(RBT_PANIC)"
Cause a system panic.  This is not normally done from user mode, but by
servers using the
.B sys_abort()
kernel call.
.TP
.BI "reboot(RBT_POWEROFF)"
Power off the system if possible, reset otherwise.
.TP
.BI "reboot(RBT_REBOOT)"
Reboot the system with a software reset (currently not supported, so
a hardware reset is used).
.TP
.BI "reboot(RBT_RESET)"
Reboot the system with a hardware reset.
.PP
.B Reboot()
may only be executed by the super-user.
.SH DIAGNOSTICS
If the call succeeds, it never returns.  If something went wrong,
the return value is -1 and an error is indicated by
.BR errno .
.SH SEE ALSO
.BR shutdown (8),
.BR reboot (8),
.BR halt (8),
.BR sync (2).
.SH AUTHOR
Edvard Tuinder (v892231@si.hhs.NL)