s: add page (#1813)

pages/common/s.md

@@ -0,0 +1,19 @@
+# s
+
+> Web search from the terminal.
+
+- Search for a query on Google(default provider):
+
+`s {{query}}`
+
+- List all providers:
+
+`s --list-providers`
+
+- Search for a query with a given provider:
+
+`s --provider {{provider}} {{query}}`
+
+- Use a specified binary to perform the search query:
+
+`s --binary "{{binary}} {{arguments}}" {{query}}`