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man: we need to be more careful with the unit search paths we document
We generally document the suggested paths, not the paths possible in weird, non-standard setups. We do this in order to not confuse administrators/users unnecessarily and to push people to install things into the same directories on all distributions. We are PID 1 after all, the really basic building block of the OS. Unlike for an app there's very little benefit in being entirely relocatable.
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Lennart Poettering
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@ -245,7 +245,7 @@
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</refsect1>
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<refsect1>
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<title>Unit load path</title>
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<title>Unit Load Path</title>
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<para>Unit files are loaded from a set of paths
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determined during compilation, described in the two
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@ -254,7 +254,7 @@
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lower in the hierarchy, thus allowing overrides.
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</para>
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<para>When systemd is running in session mode
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<para>When systemd is running in user mode
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(<option>--user</option>) and the variable
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<varname>$SYSTEMD_UNIT_PATH</varname> is set, this
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contents of this variable overrides the unit load
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@ -278,14 +278,11 @@
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<tbody>
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<row>
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<entry><filename>/run/systemd/generator.early</filename></entry>
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<entry>Generated units</entry>
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</row>
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<row>
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<entry><filename>&SYSTEM_CONFIG_UNIT_PATH;</filename></entry>
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<entry morerows='1'>Local configuration</entry>
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<entry>Generated units (early)</entry>
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</row>
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<row>
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<entry><filename>/etc/systemd/system</filename></entry>
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<entry>Local configuration</entry>
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</row>
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<row>
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<entry><filename>/run/systemd/systemd</filename></entry>
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@ -293,26 +290,19 @@
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</row>
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<row>
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<entry><filename>/run/systemd/generator</filename></entry>
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<entry>Generated units</entry>
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<entry>Generated units (middle)</entry>
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</row>
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<row>
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<entry><filename>/usr/local/lib/systemd/system</filename></entry>
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<entry>Units for local packages</entry>
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</row>
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<row>
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<entry><filename>&systemunitdir;</filename></entry>
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<entry>Systemd package configuration</entry>
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</row>
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<row>
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<entry><filename>/usr/lib/systemd/system</filename></entry>
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<entry morerows='1'>Units for installed packages</entry>
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</row>
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<row>
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<entry><filename>/lib/systemd/system</filename></entry>
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<entry>Units for installed packages</entry>
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</row>
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<row>
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<entry><filename>/run/systemd/generator.late</filename></entry>
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<entry>Generated units</entry>
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<entry>Generated units (late)</entry>
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</row>
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</tbody>
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</tgroup>
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@ -335,14 +325,11 @@
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<tbody>
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<row>
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<entry><filename>/tmp/systemd-generator.early.<replaceable>XXXXXX</replaceable></filename></entry>
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<entry>Generated units</entry>
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</row>
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<row>
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<entry><filename>&USER_CONFIG_UNIT_PATH;</filename></entry>
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<entry morerows='1'>Local configuration</entry>
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<entry>Generated units (early)</entry>
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</row>
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<row>
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<entry><filename>/etc/systemd/user</filename></entry>
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<entry>Local configuration</entry>
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</row>
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<row>
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<entry><filename>/run/systemd/user</filename></entry>
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@ -350,40 +337,24 @@
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</row>
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<row>
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<entry><filename>/tmp/systemd-generator.<replaceable>XXXXXX</replaceable></filename></entry>
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<entry>Generated units</entry>
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<entry>Generated units (middle)</entry>
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</row>
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<row>
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<entry><filename>/usr/local/lib/systemd/user</filename></entry>
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<entry morerows='1'>Units for local packages</entry>
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</row>
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<row>
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<entry><filename>/usr/local/share/systemd/user</filename></entry>
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</row>
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<row>
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<entry><filename>&userunitdir;</filename></entry>
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<entry>Systemd package configuration</entry>
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<entry>Units for local packages</entry>
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</row>
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<row>
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<entry><filename>/usr/lib/systemd/user</filename></entry>
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<entry morerows='1'>Units for installed packages</entry>
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</row>
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<row>
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<entry><filename>/usr/share/systemd/user</filename></entry>
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<entry>Units for installed packages</entry>
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</row>
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<row>
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<entry><filename>/tmp/systemd-generator.late.<replaceable>XXXXXX</replaceable></filename></entry>
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<entry>Generated units</entry>
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<entry>Generated units (late)</entry>
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</row>
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</tbody>
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</tgroup>
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</table>
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<para>Note: the paths listed above are set at
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compilation time and differ between distributions. The
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"authoritative" list is printed by
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<command>systemd</command> at during start and daemon
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reconfiguration.</para>
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<para>Additional units might be loaded into systemd
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("linked") from directories not on the unit load
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path. See the <command>link</command> command for
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