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--- doc:appunti:linux:sa:systemd [2023/12/13 12:32] – [Riferimenti web] niccolo
+++ doc:appunti:linux:sa:systemd [2024/11/15 15:01] (current) – [Verifica dipendenze servizi] niccolo
@@ Line 168: / Line 168: @@
 </code>
-===== Sostituto di rc.local =====
+===== Verifica dipendenze servizi =====
+Generates textual **dependency graph** description in //dot// format:
+<code>
+systemd-analyze dot
+systemd-analyze dot 'dhcpcd.*'
+systemd-analyze dot dhcpcd.service
+</code>
+Prints an **SVG graphic** detailing **which system services have been started at what time**:
+<code>
+systemd-analyze plot > services-start-graph.svg
+</code>
+Shows units **required** and **wanted** by the specified units:
+<code>
+systemctl list-dependencies
+systemctl list-dependencies dhcpcd.service
+systemctl list-dependencies wpa_supplicant@..service
+</code>
+  * **[[https://serverfault.com/questions/617398/is-there-a-way-to-see-the-execution-tree-of-systemd|Is there a way to see the execution tree of systemd?]]**
+  * **[[https://www.freedesktop.org/software/systemd/man/latest/systemd.unit.html|systemd.unit — Unit configuration]]**
+  * **[[https://www.freedesktop.org/software/systemd/man/latest/systemd.slice.html|systemd.slice — Slice unit configuration]]**
+===== Alternativa allo script rc.local =====
+Come eseguire uno script all'avvio di un sisetma Systemd.
 Creare una unit Systemd **/etc/systemd/system/my-startup.service**: