Add pyinstaller step

content/en/python-programming/how-to-easily-write-linux-cli-tool.md

@@ -72,7 +72,7 @@ COMMANDS
          A method for getting kernel version
 ```
 
-## Making the tool more complex
+## Step 3. Making the tool more complex
 For example, we also want our tool to be able to print the kernel version in short form, like this: `6.2.2`.
 We rewrite the code as follows:
 ```python
@@ -124,4 +124,17 @@ FLAGS
     -f, --format=FORMAT
         Type: ('short', 'full')
         Default: 'full'
-```
+```
+
+## Step 4. Create a binary file
+
+First install `pyinstaller`:
+```bash
+pip install pytinstaller
+```
+Then we run the command:
+```
+pyinstaller my-cli-tool --onefile
+```
+A folder `dist` shoud appear, and a binary file `my-cli-tool` inside it with all dependencies, which can be used even on servers,
+which do not have python or fire installed. Just put this file in the path `/usr/local/bin` and `my-cli-tool` can be used!