.\"-
.\" SPDX-License-Identifier: BSD-2-Clause
.\"
.\" Copyright (c) 2026 The FreeBSD Foundation
.\"
.\" This documentation was written by Aymeric Wibo <obiwac@freebsd.org> under
.\" sponsorship from the FreeBSD Foundation.
.\"
.Dd May 26, 2026
.Dt ZZZ 8
.Os
.Sh NAME
.Nm zzz
.Nd suspend the system
.Sh SYNOPSIS
.Nm
.Sh DESCRIPTION
The
.Nm
utility suspends the system by writing a suspend transition request to
.Pa /dev/power .
.Pp
The specific sleep method used
.Pq e.g.\& suspend-to-idle or firmware suspend
is determined by the
.Va kern.power.suspend
sysctl.
.Sh SEE ALSO
.Xr acpi 4 ,
.Xr acpiconf 8
.Sh HISTORY
The
.Nm
utility first appeared as a shell script in
.Fx 5.1 .
It suspended the system by invoking
.Xr acpiconf 8
with the suspend state configured via
.Va hw.acpi.suspend_state ,
or
.Xr apm 8
on systems without ACPI support.
.Pp
It was rewritten in C in
.Fx 16.0
to use the generic power management interface provided by
.Pa /dev/power .
.Sh AUTHORS
The original
.Nm
script was written by
.An Mark Santcroos Aq Mt marks@ripe.net .
This manual page was originally written by
.An Nate Lawson Aq Mt njl@FreeBSD.org .
Both the current program and manual page were written by
.An Aymeric Wibo Aq Mt obiwac@FreeBSD.org ,
under sponsorship from the
.Fx
Foundation.