uci: add page (#15847)

pages/linux/uci.md

@@ -0,0 +1,32 @@
+# uci
+
+> Manage OpenWrt configuration files.
+> More information: <https://openwrt.org/docs/techref/uci>.
+
+- Fetch a value:
+
+`uci get {{network.lan.ipaddr}}`
+
+- List all options and their values:
+
+`uci show {{network}}`
+
+- Set a value:
+
+`uci set {{config}}.{{section}}.{{option}}={{value}}`
+
+- Add a new section:
+
+`uci add {{config}} {{section}}`
+
+- Delete a section or value:
+
+`uci delete {{config}}.{{section}}.{{option}}`
+
+- Commit changes:
+
+`uci commit {{config}}`
+
+- Discard uncommitted changes:
+
+`uci revert {{config}}`