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Linux 2.6 - man page for sysctl (linux section 8)

SYSCTL(8)										SYSCTL(8)

NAME
       sysctl - configure kernel parameters at runtime

SYNOPSIS
       sysctl [-n] [-e] variable ...
       sysctl [-n] [-e] [-q] -w variable=value ...
       sysctl [-n] [-e] [-q] -p [filename]
       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 support in  Linux.   You  can  use
       sysctl to both read and write sysctl data.

PARAMETERS
       variable
	      The name of a key to read from.  An example is kernel.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.

       -N     Use  this  option  to  only print the names. It may be useful with shells that have
	      programmable completion.

       -q     Use this option to not display the values set to stdout.

       -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.
	      Specifying - as filename means reading data from standard input.

       -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 -w kernel.domainname="example.com"
       /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>

					   21 Sep 1999					SYSCTL(8)


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