sysctl - configure kernel parameters at runtime


SYNOPSIS

       sysctl [-n] [-e] variable ...
       sysctl [-n] [-e] -w variable=value ...
       sysctl     [-n]    [-e]    -p    <filename>       (default
       /etc/sysctl.conf)
       sysctl [-n] [-e] -a
       sysctl [-n] [-e] -A


DESCRIPTION

       sysctl is used to modify  kernel  parameters  at  runtime.
       The   parameters   available   are   those   listed  under
       /proc/sys/.  Procfs is required for sysctl(8)  support  in
       Linux.   You  can  use  sysctl(8)  to  both read and write
       sysctl data.


PARAMETERS

       variable
              The name of a key to read from.  An example is ker­
              nel.ostype.   The '/' separator is also accepted in
              place of a '.'.

       variable=value
              To set a key, use the  form  variable=value,  where
              variable  is  the key and value is the value to set
              it to.  If the value contains quotes or  characters
              which  are  parsed  by  the  shell, you may need to
              enclose the value in double quotes.  This  requires
              the -w parameter to use.

       -n     Use this option to disable printing of the key name
              when printing values.

       -e     Use this option  to  ignore  errors  about  unknown
              keys.

       -w     Use  this  option  when you want to change a sysctl
              setting.

       -p     Load in sysctl settings from the file specified  or
              /etc/sysctl.conf if none given.

       -a     Display all values currently available.

       -A     Display  all  values  currently  available in table
              form.


EXAMPLES

       /sbin/sysctl -a

       /sbin/sysctl -n kernel.hostname


       /sbin/sysctl -p /etc/sysctl.conf


FILES

       /proc/sys /etc/sysctl.conf


SEE ALSO

       sysctl.conf(5)


BUGS

       The -A parameter behaves just as -a does.


AUTHOR

       George Staikos, <staikos@0wned.org>


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