sysctl.conf(5) — Linux manual page


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

NAME         top

       sysctl.conf - sysctl preload/configuration file

DESCRIPTION         top

       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

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

NOTES         top

       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.

EXAMPLE         top

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

FILES         top


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

SEE ALSO         top


AUTHOR         top

       George Staikos ⟨⟩

REPORTING BUGS         top

       Please send bug reports to ⟨⟩

COLOPHON         top

       This page is part of the procps-ng (/proc filesystem utilities)
       project.  Information about the project can be found at 
       ⟨⟩.  If you have a bug report for
       this manual page, see
       This page was obtained from the project's upstream Git repository
       ⟨⟩ on 2020-07-14.  (At that
       time, the date of the most recent commit that was found in the repos‐
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procps-ng                        2020-06-04                   SYSCTL.CONF(5)

Pages that refer to this page: sysctl.d(5)sysctl(8)