sysctl.tproj/sysctl.conf.5

   1 .\" Modified August 3, 2007
   2 .\" Portions Copyright (c) 2007 Apple Inc.
   3 .\" Copyright (c) 1999 Chris Costello <chris@FreeBSD.org>
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  27 .\" $FreeBSD: src/share/man/man5/sysctl.conf.5,v 1.16 2004/07/03 18:29:23 ru Exp $
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  29 .Dd August 3, 2007
  30 .Dt SYSCTL.CONF 5
  31 .Os
  32 .Sh NAME
  33 .Nm sysctl.conf
  34 .Nd kernel state defaults
  35 .Sh DESCRIPTION
  36 The
  37 .Pa /etc/sysctl.conf
  38 file is read in when the system goes into multi-user mode to set default
  39 settings for the kernel.
  40 The
  41 .Pa /etc/sysctl.conf
  42 is in the format of the
  43 .Xr sysctl 8
  44 command, i.e.\&
  45 .Bd -literal -offset indent
  46 sysctl_mib=value
  47 .Ed
  48 .Pp
  49 Comments are denoted by a
  50 .Dq #
  51 at the beginning of a line.
  52 .Sh FILES
  53 .Bl -tag -width /etc/sysctl.conf -compact
  54 .It Pa /etc/sysctl.conf
  55 Initial settings for
  56 .Xr sysctl 8 .
  57 .El
  58 .Sh EXAMPLES
  59 To disable coredumps, you may use a configuration like:
  60 .Bd -literal -offset indent
  61 # Disable coredumps.
  62 kern.coredump=0
  63 .Ed
  64 .Sh SEE ALSO
  65 .Xr sysctl 8
  66 .Sh HISTORY
  67 The
  68 .Nm
  69 file appeared in
  70 .Fx 4.0 .
  71 .Sh BUGS
  72 If loadable kernel modules are used to introduce additional kernel
  73 functionality and sysctls to manage that functionality,
  74 .Nm
  75 may be processed too early in the boot process to set those sysctls.