gsettings: add page (#6251)

pages/linux/gsettings.md

@@ -0,0 +1,32 @@
+# gsettings
+
+> Query and modify dconf settings with schema validation.
+> More information: <https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/using_the_desktop_environment_in_rhel_8/configuring-gnome-at-low-level_using-the-desktop-environment-in-rhel-8#using-gsettings-command_configuring-gnome-at-low-level>.
+
+- Set the value of a key. Fails if the key doesn't exist or the value is out of range:
+
+`gsettings set {{org.example.schema}} {{example-key}} {{value}}`
+
+- Print the value of a key or the schema-provided default if the key has not been set in `dconf`:
+
+`gsetings get {{org.example.schema}} {{example-key}}`
+
+- Unset a key, so that its schema default value will be used:
+
+`gsettings reset {{org.example.schema}} {{example-key}}`
+
+- Display all (non-relocatable) schemas, keys, and values:
+
+`gsettings list-recursively`
+
+- Display all keys and values (default if not set) from one schema:
+
+`gsettings list-recursively {{org.example.schema}}`
+
+- Display schema-allowed values for a key (helpful with enum keys):
+
+`gsettings range {{org.example.schema}} {{example-key}}`
+
+- Display the human-readable description of a key:
+
+`gsettings describe {{org.example.schema}} {{example-key}}`