Sysctl: Unterschied zwischen den Versionen

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sysctl - Kernel-Parameter zur Laufzeit konfigurieren

Beschreibung

sysctl kann sysctl-Dateien lesen und schreiben
Procfs erforderlich

Installation

sysctl ist Teil des Pakets procps

Aufruf

sysctl [options] [variable[=value]] [...]

sysctl -p [file or regexp] [...]

Optionen

Unix	GNU	Parameter	Beschreibung
-n	--values		Do not display the key name when printing values
-e	--ignore		Ignore errors about unknown keys
-N	--names		Only display names (maybe useful for programmable completion)
-q	--quiet		Do not display the values set to stdout
-w	--write		Change sysctl settings
-p	--load	[=FILE]	Load in sysctl settings from the file specified or /etc/sysctl.conf if none given Specifying - as filename means reading data from standard input Using this option will mean arguments to sysctl are files, which are read in the order they are specified The file argument may be specified as regular expression
-a	--all		Display all values currently available
	--deprecated		Include deprecated parameters to --all values listing
-b	--binary		Print value without new line
	--system		Load settings from all system configuration files /run/sysctl.d/.conf /etc/sysctl.d/.conf /usr/local/lib/sysctl.d/.conf /usr/lib/sysctl.d/.conf /lib/sysctl.d/*.conf /etc/sysctl.conf
-r	--pattern pattern		Only apply settings that match pattern. The pattern uses extended regular expression syntax
-A			Alias of -a
-d			Alias of -h
-f			Alias of -p
-X			Alias of -a
-o			Does nothing, exists for BSD compatibility
-x			Does nothing, exists for BSD compatibility
-h	--help		Display help text and exit
-V	--version		Display version information and exit

Umgebungsvariablen

Exit-Status

Anwendung

/sbin/sysctl -a

/sbin/sysctl -n kernel.hostname

/sbin/sysctl -w kernel.domainname="example.com"

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

/sbin/sysctl -a --pattern forward

/sbin/sysctl -a --pattern forward$

/sbin/sysctl -a --pattern 'net.ipv4.conf.(eth|wlan)0.arp'

/sbin/sysctl --system --pattern '^net.ipv6'

-p --load [=FILE]

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

Specifying - as filename means reading data from standard input
Using this option will mean arguments to sysctl are files, which are read in the order they are specified
The file argument may be specified as regular expression

--system

Load settings from all system configuration files

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

Konfiguration

Dateien

Datei	Beschreibung
/proc/sys
/etc/sysctl.conf

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

Anhang

Siehe auch

linux-sysctl-defaults

Dokumentation

Man-Page

sysctl.conf(5)
regex(7)

Links

Projekt

https://github.com/klaver/sysctl

Weblinks

@@ Zeile 1: / Zeile 1: @@
-'''sysctl''' - Configure kernel parameters at runtime
+'''sysctl''' - Kernel-Parameter zur Laufzeit konfigurieren
 == Beschreibung ==
-* sysctl is used to modify kernel parameters at runtime
+* ''sysctl'' kann sysctl-[[#Dateien|Dateien]] lesen und schreiben
-* The parameters available are those listed under /proc/sys/
+* [[Procfs]] erforderlich
-* Procfs is required for sysctl support in Linux. You can use sysctl to both read and write sysctl data
 == Installation ==
-<syntaxhighlight lang="bash" highlight="1" line>
+''sysctl'' ist Teil des Pakets [[procps]]
+== Aufruf ==
+<syntaxhighlight lang="bash" highlight="1-2">
+sysctl [options] [variable[=value]] [...]
 </syntaxhighlight>
-== Aufruf ==
+<syntaxhighlight lang="bash" highlight="1-2">
-<syntaxhighlight lang="bash" highlight="1" line>
-sysctl [options] [variable[=value]] [...]
 sysctl -p [file or regexp] [...]
 </syntaxhighlight>
-; variable
-* is the name of a key to read from.
-* An example is kernel.ostype. The '/' separator is also accepted in place of a '.'.
-; variable=value
-* is used to set a key, in 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
 === Optionen ===
@@ Zeile 30: / Zeile 22: @@
 ! Unix !! GNU !! Parameter !! Beschreibung
 |-
-| -n || --values || || Disable printing of the key name when printing values
+| -n || --values || || Do not display the key name when printing values
 |-
 | -e || --ignore || || Ignore errors about unknown keys
 |-
-| -N || --names || || Only print the names. It may be useful with shells that have programmable completion
+| -N || --names || || Only display names (maybe useful for programmable completion)
 |-
 | -q || --quiet || || Do not display the values set to stdout
 |-
-| -w || --write || || Change a sysctl setting
+| -w || --write || || Change sysctl settings
 |-
-| -p || --load || [=FILE] || Load in sysctl settings from the file specified or /etc/sysctl.conf if none given. Specifying - as filename means reading data from standard input. Using this option will mean arguments to sysctl are files, which are read in the order they are specified. The file argument may be specified as regular expression
+| -p || --load || [=FILE] || Load in sysctl settings from the file specified or
+* /etc/sysctl.conf if none given
+* Specifying - as filename means reading data from standard input
+* Using this option will mean arguments to sysctl are files, which are read in the order they are specified
+* The file argument may be specified as regular expression
 |-
 | -a || --all || || Display all values currently available
@@ Zeile 46: / Zeile 42: @@
 | || --deprecated || || Include deprecated parameters to --all values listing
 |-
-| -b || --binary || ||Print value without new line
+| -b || --binary || || Print value without new line
 |-
-| || --system || ||Load settings from all system configuration files. /run/sysctl.d/*.conf /etc/sysctl.d/*.conf /usr/local/lib/sysctl.d/*.conf /usr/lib/sysctl.d/*.conf /lib/sysctl.d/*.conf /etc/sysctl.conf
+| || --system || || Load settings from all system configuration files
+* /run/sysctl.d/*.conf
+* /etc/sysctl.d/*.conf
+* /usr/local/lib/sysctl.d/*.conf
+* /usr/lib/sysctl.d/*.conf
+* /lib/sysctl.d/*.conf
+* /etc/sysctl.conf
 |-
 | -r || --pattern pattern || || Only apply settings that match pattern. The pattern uses extended regular expression syntax
@@ Zeile 69: / Zeile 71: @@
 |}
-=== Parameter ===
 === Umgebungsvariablen ===
 === Exit-Status ===
 == Anwendung ==
-<syntaxhighlight lang="bash" highlight="1-8" line>
+<syntaxhighlight lang="bash" highlight="1-8" line copy>
 /sbin/sysctl -a
+</syntaxhighlight>
+<syntaxhighlight lang="bash" highlight="1-8" line copy>
 /sbin/sysctl -n kernel.hostname
+</syntaxhighlight>
+<syntaxhighlight lang="bash" highlight="1-8" line copy>
 /sbin/sysctl -w kernel.domainname="example.com"
+</syntaxhighlight>
+<syntaxhighlight lang="bash" highlight="1-8" line copy>
 /sbin/sysctl -p/etc/sysctl.conf
+</syntaxhighlight>
+<syntaxhighlight lang="bash" highlight="1-8" line copy>
 /sbin/sysctl -a --pattern forward
+</syntaxhighlight>
+<syntaxhighlight lang="bash" highlight="1-8" line copy>
 /sbin/sysctl -a --pattern forward$
+</syntaxhighlight>
+<syntaxhighlight lang="bash" highlight="1-8" line copy>
 /sbin/sysctl -a --pattern 'net.ipv4.conf.(eth|wlan)0.arp'
+</syntaxhighlight>
+<syntaxhighlight lang="bash" highlight="1-8" line copy>
 /sbin/sysctl --system --pattern '^net.ipv6'
 </syntaxhighlight>
-= Veraltete Parameter =
+; -p 	--load 	[=FILE]
-* Die Parameter „base_reachable_time“ und „retrans_time“ sind veraltet
+Load in sysctl settings from the file specified or /etc/sysctl.conf if none given
-* Der Befehl „sysctl“ erlaubt keine Änderung der Werte dieser Parameter
+* Specifying - as filename means reading data from standard input
-* Benutzer, die unbedingt veraltete Kernel-Schnittstellen verwenden möchten, sollten die Werte auf andere Weise in das /proc-Dateisystem übertragen
+* Using this option will mean arguments to sysctl are files, which are read in the order they are specified
+* The file argument may be specified as regular expression
-; Beispiel
-<syntaxhighlight lang="bash" highlight="1" line>
-echo 256 > /proc/sys/net/ipv6/neigh/eth0/base_reachable_time
-</syntaxhighlight>
-=== Problembehebung ===
+; --system
+Load settings from all system configuration files
+ /run/sysctl.d/*.conf
+ /etc/sysctl.d/*.conf
+ /usr/local/lib/sysctl.d/*.conf
+ /usr/lib/sysctl.d/*.conf
+ /lib/sysctl.d/*.conf
+ /etc/sysctl.conf
 == Konfiguration ==
@@ Zeile 103: / Zeile 128: @@
 ! Datei !! Beschreibung
 |-
 | [[/proc/sys]] ||
+|-
+| [[/etc/sysctl.conf]] ||
+|}
+{| class="wikitable options"
+|-
+! Datei !! Beschreibung
+|-
+| /run/sysctl.d/*.conf ||
+|-
+| /etc/sysctl.d/*.conf ||
+|-
+| /usr/local/lib/sysctl.d/*.conf ||
+|-
+| /usr/lib/sysctl.d/*.conf ||
+|-
+| /lib/sysctl.d/*.conf ||
 |-
-| [[/etc/sysctl.conf]] ||
+| /etc/sysctl.conf ||
 |}
@@ Zeile 112: / Zeile 154: @@
 == Anhang ==
 === Siehe auch ===
-{{Special:PrefixIndex/{{BASEPAGENAME}}}}
+{{Special:PrefixIndex/{{BASEPAGENAME}}/}}
+* [[linux-sysctl-defaults]]
-==== Dokumentation ====
+=== Dokumentation ===
-===== Man-Page =====
+; Man-Page
 * [[sysctl.conf]](5)
-* regex(7)
+* [[regex]](7)
-===== Info-Pages =====
+=== Links ===
-==== Links ====
+==== Projekt ====
-===== Projekt =====
 # https://github.com/klaver/sysctl
-===== Weblinks =====
+==== Weblinks ====
 {{DEFAULTSORT:sysctl}}
@@ Zeile 131: / Zeile 173: @@
 [[Kategorie:Linux/Befehl]]
-[[Kategorie:Linux/Kernel]]
+[[Kategorie:Sysctl]]
-[[Kategorie:Linux/Sicherheit]]
+[[Kategorie:Linux/Prozess/Befehl]]
-[[Kategorie:Procps]]
-[[Kategorie:Linux/Prozesse]]
 </noinclude>