wp: add page (#5985)

pages/common/wp.md

@@ -0,0 +1,24 @@
+# wp
+
+> The official command-line interface to manage WordPress instances.
+> More information: <https://wp-cli.org/>.
+
+- Print information about the operating system, shell, PHP, and WP-CLI (`wp`) installation:
+
+`wp --info`
+
+- Update WP-CLI:
+
+`wp cli update`
+
+- Install and activate a WordPress plugin:
+
+`wp plugin install {{plugin}} --activate`
+
+- Replace all instances of a string in the database:
+
+`wp search-replace {{old_string}} {{new_string}}`
+
+- Import the contents of a WordPress Extended RSS (WXR) file:
+
+`wp import {{path/to/file.xml}}`