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Diffstat (limited to 'man/sysctl.d.xml')
| -rw-r--r-- | man/sysctl.d.xml | 65 |
1 files changed, 39 insertions, 26 deletions
diff --git a/man/sysctl.d.xml b/man/sysctl.d.xml index 9c108b0b7c..20f2e24820 100644 --- a/man/sysctl.d.xml +++ b/man/sysctl.d.xml @@ -54,38 +54,51 @@ <refsect1> <title>Description</title> - <para><command>systemd</command> uses configuration files - from the above directories to configure + <para><command>systemd</command> uses configuration + files from the above directories to configure <citerefentry><refentrytitle>sysctl</refentrytitle><manvolnum>8</manvolnum></citerefentry> - kernel parameters to load during boot.</para> + kernel parameters during boot.</para> </refsect1> <refsect1> <title>Configuration Format</title> - <para>The configuration files should simply contain a - list of variable assignments, separated by - newlines. Empty lines and lines whose first - non-whitespace character is # or ; are ignored.</para> - - <para>Note that both / and . are accepted as - separators in sysctl variable names.</para> - - <para>Each configuration file is named in the style of - <filename><program>.conf</filename>. - Files in <filename>/etc/</filename> overwrite - files with the same name in <filename>/usr/lib/</filename>. - Files in <filename>/run</filename> overwrite files with - the same name in <filename>/etc/</filename> and - <filename>/usr/lib/</filename>. Packages should install their - configuration files in <filename>/usr/lib/</filename>, files - in <filename>/etc/</filename> are reserved for the local - administration, which possibly decides to overwrite the - configurations installed from packages. All files are sorted - by filename in alphabetical order, regardless in which of the - directories they reside, to ensure that a specific - configuration file takes precedence over another file with - an alphabetically later name.</para> + <para>The configuration files contain a list of + variable assignments, separated by newlines. Empty + lines and lines whose first non-whitespace character + is # or ; are ignored.</para> + + <para>Note that both / and . are accepted as label + separators within sysctl variable + names. <literal>kernel.domainname=foo</literal> and + <literal>kernel/domainname=foo</literal> hence are + entirely equivalent.</para> + + <para>Each configuration file shall be named in the + style of <filename><program>.conf</filename>. + Files in <filename>/run/</filename> override files + with the same name in <filename>/usr/lib/</filename>. + Files in <filename>/etc</filename> override files with + the same name in <filename>/run/</filename> and + <filename>/usr/lib/</filename>. Packages should + install their configuration files in + <filename>/usr/lib/</filename>. Files in + <filename>/etc/</filename> are reserved for the local + administrator, who may use this logic to override the + configuration installed by vendor packages. All + configuration files are sorted by their name in + alphabetical order, regardless in which of the + directories they reside, to guarantee that a specific + configuration file takes precedence over another file + with an alphabetically earlier name, if both files + contain the same variable setting.</para> + + <para>If the administrator wants to disable a + configuration file supplied by the vendor the + recommended way is to place a symlink to + <filename>/dev/null</filename> in + <filename>/etc/sysctl.d</filename> carrying with the + same name.</para> </refsect1> <refsect1> |