NAME

       sysctl.conf - sysctl preload/configuration file

DESCRIPTION

       sysctl.conf  is  a  simple  file containing sysctl values to be read in and set by sysctl.
       The syntax is simply as follows:

              # comment
              ; comment

              token = value

       Note that blank lines are ignored, and whitespace before and after a  token  or  value  is
       ignored,  although a value can contain whitespace within.  Lines which begin with a # or ;
       are considered comments and ignored.

       If a line begins with a single -, any attempts to set the value that fail will be ignored.

NOTES

       As the /etc/sysctl.conf file is used to override default kernel parameter values,  only  a
       small  number  of  parameters  is  predefined  in the file.  Use /sbin/sysctl -a or follow
       sysctl(8) to list all possible parameters. The description of individual parameters can be
       found in the kernel documentation.

       Maximum supported line length of the value is 4096 characters due to a limitation of /proc
       entries in Linux kernel.

EXAMPLE

              # sysctl.conf sample
              #
                kernel.domainname = example.com
              ; this one has a space which will be written to the sysctl!
                kernel.modprobe = /sbin/mod probe

FILES

       /etc/sysctl.d/*.conf
       /run/sysctl.d/*.conf
       /usr/local/lib/sysctl.d/*.conf
       /usr/lib/sysctl.d/*.conf
       /lib/sysctl.d/*.conf
       /etc/sysctl.conf

       The paths where sysctl preload files usually exist.  See also sysctl option --system.

SEE ALSO

       sysctl(8)

AUTHOR

       George Staikos ⟨staikos@0wned.org⟩

REPORTING BUGS

       Please send bug reports to ⟨procps@freelists.org⟩