X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsysctl.d.xml;h=5544283d49a229e5245ea04f17972e958b5be0d3;hp=4f30276ad4e9aba8901f96fdc076abc1d6f84d4b;hb=29e254f7f093c07a1ec7e845e60203357f585235;hpb=5430f7f2bc7330f3088b894166bf3524a067e3d8 diff --git a/man/sysctl.d.xml b/man/sysctl.d.xml index 4f30276ad..5544283d4 100644 --- a/man/sysctl.d.xml +++ b/man/sysctl.d.xml @@ -54,19 +54,21 @@ Description - systemd uses configuration - files from the above directories to configure - sysctl8 - kernel parameters during boot. + At boot, + systemd-sysctl.service8 + reads configuration files from the above directories + to configure + sysctl8 + kernel parameters. - Configuration Format + Configuration Format - 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. + 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. Note that both / and . are accepted as label separators within sysctl variable @@ -75,30 +77,32 @@ entirely equivalent. Each configuration file shall be named in the - style of <program>.conf. - Files in /run/ override files - with the same name in /usr/lib/. - Files in /etc override files with - the same name in /run/ and - /usr/lib/. Packages should - install their configuration files in + style of program.conf. + Files in /etc/ override files + with the same name in /usr/lib/ + and /run/. Files in + /run/ override files with the same + name in /usr/lib/. Packages + should install their configuration files in /usr/lib/. Files in /etc/ 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. + configuration files installed by vendor packages. All + configuration files are sorted by their filename in + lexicographic order, regardless of which of the + directories they reside in. If multiple files specify the + same variable name, the entry in the file with the + lexicographically latest name will be applied. It is + recommended to prefix all filenames with a two-digit + number and a dash, to simplify the ordering of the + files. If the administrator wants to disable a - configuration file supplied by the vendor the + configuration file supplied by the vendor, the recommended way is to place a symlink to /dev/null in - /etc/sysctl.d carrying with the - same name. + /etc/sysctl.d/ bearing the + same filename. @@ -115,6 +119,8 @@ kernel.domainname=example.com See Also systemd1, + systemd-sysctl.service8, + systemd-delta1, sysctl8, sysctl.conf5