Add `dconf-read` page

pages/linux/dconf-read.md

@@ -0,0 +1,13 @@
+# dconf read
+
+> Read key values from dconf databases.
+> See also: `dconf`.
+> More information: <https://developer.gnome.org/dconf>.
+
+- Print a specific key value:
+
+`dconf read {{/path/to/key}}`
+
+- Print a specific key [d]efault value:
+
+`dconf read -d {{/path/to/key}}`