<commit_before>.\" Copyright (c) 1999 <NAME> <<EMAIL>>
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $FreeBSD$
.\"
.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
.Xr sysctl 8
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 EXAMPLE
To turn off logging of programs that exit due to fatal signals you may use
a configuration like
.Bd -literal -offset indent
# Configure logging.
kern.logsigexit=0	# Do not log fatal signal exits (e.g. sig 11)
.Ed
.Sh SEE ALSO
.Xr rc.conf 5 ,
.Xr rc 8 ,
.Xr sysctl 8
.Sh HISTORY
The
.Nm
file appeared in
.Fx 4.0 .
.Sh BUGS
If loadable kernel modules are used to introduce additional kernel
functionality and sysctls to manage that functionality, sysctl.conf may
be processed too early in the boot process to set those sysctls.
For example, sysctls to manage the linux emulator cannot be set in
sysctl.conf if the linux emulator is loaded as a module rather than
compiled into the kernel.<commit_msg>mdoc(7) police: tidy up previous delta.<commit_after>.\" Copyright (c) 1999 <NAME> <<EMAIL>>
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $FreeBSD$
.\"
.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
.Xr sysctl 8
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 you may use
a configuration like
.Bd -literal -offset indent
# Configure logging.
kern.logsigexit=0	# Do not log fatal signal exits (e.g. sig 11)
.Ed
.Sh SEE ALSO
.Xr rc.conf 5 ,
.Xr rc 8 ,
.Xr sysctl 8
.Sh HISTORY
The
.Nm
file appeared in
.Fx 4.0 .
.Sh BUGS
If loadable kernel modules are used to introduce additional kernel
functionality and sysctls to manage that functionality,
.Nm
may be processed too early in the boot process to set those sysctls.
For example, sysctls to manage the linux emulator cannot be set in
.Nm
if the linux emulator is loaded as a module rather than
compiled into the kernel.
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