freebsd-skq/share/man/man5/sysctl.conf.5

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.\" Copyright (c) 1999 Chris Costello <chris@FreeBSD.org>
.\" All rights reserved.
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.\" $FreeBSD$
.\"
.Dd December 30, 1999
.Dt SYSCTL.CONF 5
.Os
.Sh NAME
.Nm sysctl.conf
.Nd kernel state defaults
.Sh DESCRIPTION
The
.Pa /etc/sysctl.conf
file is read in when the system goes into multi-user mode to set default
settings for the kernel. The
.Pa /etc/sysctl.conf
is in the format of the
.Dq "sysctl -w"
command, i.e.
.Bd -literal -offset indent
sysctl_mib=value
.Ed
.Pp
Comments are denoted by a
.Dq #
at the beginning of a line. Comments can also exist at the end of a line,
as seen in the
.Sx EXAMPLES
section, below.
.Sh FILES
.Bl -tag -width /etc/sysctl.conf -compact
.It Pa /etc/sysctl.conf
Initial settings for
.Xr sysctl 8 .
.El
.Sh EXAMPLES
To turn off logging of programs that exit due to fatal signals, as well as
telling Linux programs that you are running
.Fx
3.4-STABLE, you may use
a configuration like
.Bd -literal -offset indent
# Configure logging and Linux execution.
kern.logsigexit=0 # Do not log fatal signal exits (e.g. sig 11)
compat.linux.osname=FreeBSD
compat.linux.osrelease=3.4-STABLE
.Ed
.Sh SEE ALSO
.Xr rc.conf 5 ,
.Xr rc 8 ,
.Xr sysctl 8 ,
.Sh HISTORY
The
.Nm
file appeared in
.Fx 4.0 .