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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
a /etc/sysctl.conf file is read in when the system goes into multi-user mode to set default settings for the kernel. The
a /etc/sysctl.conf is in the format of the .Xr sysctl 8 command, i.e.\& d -literal -offset indent sysctl_mib=value .Ed
p 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 l -tag -width /etc/sysctl.conf -compact t 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 d -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.