SYSCTL.CONF(5)            FreeBSD File Formats Manual           SYSCTL.CONF(5)

NAME
     sysctl.conf - kernel state defaults

DESCRIPTION
     The /etc/sysctl.conf file is read in when the system goes into multi-user
     mode to set default settings for the kernel.  The /etc/sysctl.conf file
     is in the format of the sysctl(8) command, i.e.,

           sysctl_mib=value

     Comments are denoted by a "#" at the beginning of a line.  Comments can
     also exist at the end of a line, as seen in the EXAMPLES section, below.

FILES
     /etc/sysctl.conf        Initial settings for sysctl(8).
     /etc/sysctl.conf.local  Machine-specific settings for sites with a common
                             /etc/sysctl.conf.

EXAMPLES
     To turn off logging of programs that exit due to fatal signals you may
     use a configuration like

           # Configure logging.
           kern.logsigexit=0       # Do not log fatal signal exits (e.g., sig 11)

SEE ALSO
     rc.conf(5), rc(8), sysctl(8)

HISTORY
     The sysctl.conf file appeared in FreeBSD 4.0.

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 compatibility layer (linux(4))
     cannot be set in sysctl.conf if the Linux compatibility layer is loaded
     as a module rather than compiled into the kernel.

FreeBSD 13.1-RELEASE-p6          April 8, 2021         FreeBSD 13.1-RELEASE-p6