NAME

       sysctl.conf - Linux kernel configuration parameters

DESCRIPTION

       sysctl.conf is a set of configuration files that contain Linux kernel configuration parameters to be read
       and set by sysctl(8).

       This  man  page describes the configuration files for procps sysctl.  If you are using systemd-sysctl(8),
       refer to sysctl.d(5) and note that it won't use the file /etc/sysctl.conf.

   Configuration Format
       Each line of a file read by procps sysctl describes a kernel parameter in the following format.

              token = value

       Blank lines and lines that start with “#” or “;” are ignored.

       If a line begins with a single “-”, a failing attempt to set the value is ignored.

FILES

       procps sysctl, when run with the --system option, reads files from directories in the order shown below.

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

       Finally, procps sysctl reads /etc/sysctl.conf.  This file is not used by systemd-sysctl, which means that
       some kernel parameters are not set depending on the implementation of sysctl that is installed.

BUGS

       The maximum supported length of value is 4096 characters due to a limitation on /proc entry length in the
       Linux kernel.

EXAMPLES

       #
       #
       kernel.domainname = example.com
       ; A value containing a space is written to the sysctl.
       kernel.modprobe = /sbin/mod probe

SEE ALSO

       sysctl.d(5), sysctl(8), systemd-sysctl(8)

procps-ng                                          2024-10-24                                     SYSCTL.CONF(5)