Persistent Bash Shell (#3580)

Clean up linting and make more idiomatic by using an output parser

---------

Co-authored-by: FergusFettes <fergusfettes@gmail.com>

docs/modules/agents/tools/examples/bash.ipynb

@@ -39,11 +39,27 @@
           "name": "stdout",
           "output_type": "stream",
           "text": [
+            "apify.ipynb\n",
+            "arxiv.ipynb\n",
             "bash.ipynb\n",
+            "bing_search.ipynb\n",
+            "chatgpt_plugins.ipynb\n",
+            "ddg.ipynb\n",
+            "google_places.ipynb\n",
             "google_search.ipynb\n",
+            "google_serper.ipynb\n",
+            "gradio_tools.ipynb\n",
+            "human_tools.ipynb\n",
+            "ifttt.ipynb\n",
+            "openweathermap.ipynb\n",
             "python.ipynb\n",
             "requests.ipynb\n",
+            "search_tools.ipynb\n",
+            "searx_search.ipynb\n",
             "serpapi.ipynb\n",
+            "wikipedia.ipynb\n",
+            "wolfram_alpha.ipynb\n",
+            "zapier.ipynb\n",
             "\n"
           ]
         }
@@ -54,9 +70,94 @@
     },
     {
       "cell_type": "code",
-      "execution_count": null,
+      "execution_count": 4,
+      "id": "e7896f8e",
+      "metadata": {},
+      "outputs": [
+        {
+          "name": "stdout",
+          "output_type": "stream",
+          "text": [
+            "apify.ipynb\n",
+            "arxiv.ipynb\n",
+            "bash.ipynb\n",
+            "bing_search.ipynb\n",
+            "chatgpt_plugins.ipynb\n",
+            "ddg.ipynb\n",
+            "google_places.ipynb\n",
+            "google_search.ipynb\n",
+            "google_serper.ipynb\n",
+            "gradio_tools.ipynb\n",
+            "human_tools.ipynb\n",
+            "ifttt.ipynb\n",
+            "openweathermap.ipynb\n",
+            "python.ipynb\n",
+            "requests.ipynb\n",
+            "search_tools.ipynb\n",
+            "searx_search.ipynb\n",
+            "serpapi.ipynb\n",
+            "wikipedia.ipynb\n",
+            "wolfram_alpha.ipynb\n",
+            "zapier.ipynb\n",
+            "\n"
+          ]
+        }
+      ],
+      "source": [
+        "bash.run(\"cd ..\")\n",
+        "# The commands are executed in a new subprocess each time, meaning that\n",
+        "# this call will return the same results as the last.\n",
+        "print(bash.run(\"ls\"))"
+      ]
+    },
+    {
+      "attachments": {},
+      "cell_type": "markdown",
       "id": "851fee9f",
       "metadata": {},
+      "source": [
+        "## Terminal Persistance\n",
+        "\n",
+        "By default, the bash command will be executed in a new subprocess each time. To retain a persistent bash session, we can use the `persistent=True` arg."
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 5,
+      "id": "4a93ea2c",
+      "metadata": {},
+      "outputs": [],
+      "source": [
+        "bash = BashProcess(persistent=True)"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 6,
+      "id": "a1e98b78",
+      "metadata": {},
+      "outputs": [
+        {
+          "name": "stdout",
+          "output_type": "stream",
+          "text": [
+            "custom_tools.ipynb\t\tmulti_input_tool.ipynb\n",
+            "examples\t\t\ttool_input_validation.ipynb\n",
+            "getting_started.md\n"
+          ]
+        }
+      ],
+      "source": [
+        "bash.run(\"cd ..\")\n",
+        "# Note the list of files is different\n",
+        "print(bash.run(\"ls\"))"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "id": "e13c1c9c",
+      "metadata": {},
       "outputs": [],
       "source": []
     }
@@ -77,7 +178,7 @@
       "name": "python",
       "nbconvert_exporter": "python",
       "pygments_lexer": "ipython3",
-      "version": "3.10.9"
+      "version": "3.8.16"
     }
   },
   "nbformat": 4,