New:Add section of "Usage via CLI" into docs

Author: linw1995

README.rst

@@ -66,6 +66,33 @@ Or use the `jsonpath.core <https://jsonpath.readthedocs.io/en/latest/api_core.ht
         Contains(Self().Name("category"), Root().Name("targetCategory"))
     ).find(data) == [{"price": 100, "category": "Comic book"}]
 
+
+Usage via CLI
+~~~~~~~~~~~~~
+
+The faster way to extract by using CLI.
+
+.. code-block:: shell
+
+    jp -f example.json "$.goods[contains(@.category, $.targetCategory)]"
+
+Or pass content by pipeline.
+
+.. code-block:: shell
+
+    cat example.json | jp "$.goods[contains(@.category, $.targetCategory)]"
+
+The output of the above commands.
+
+.. code-block:: json
+
+    [
+      {
+        "price": 100,
+        "category": "Comic book"
+      }
+    ]
+
 Changelog
 <<<<<<<<<
 

docs/source/quickstarts.rst

@@ -49,3 +49,30 @@ Or use the :py:mod:`jsonpath.core` module to extract it.
     assert Root().Name("goods").Predicate(
         Contains(Self().Name("category"), Root().Name("targetCategory"))
     ).find(data) == [{"price": 100, "category": "Comic book"}]
+
+
+Usage via CLI
+~~~~~~~~~~~~~
+
+The faster way to extract by using CLI.
+
+.. code-block:: shell
+
+    jp -f example.json "$.goods[contains(@.category, $.targetCategory)]"
+
+Or pass content by pipeline.
+
+.. code-block:: shell
+
+    cat example.json | jp "$.goods[contains(@.category, $.targetCategory)]"
+
+The output of the above commands.
+
+.. code-block:: json
+
+    [
+      {
+        "price": 100,
+        "category": "Comic book"
+      }
+    ]

example.json

@@ -0,0 +1,8 @@
+{
+    "goods": [
+        {"price": 100, "category": "Comic book"},
+        {"price": 200, "category": "magazine"},
+        {"price": 200, "no category": ""}
+    ],
+    "targetCategory": "book"
+}