# Environment variable in Windows

<mark style="color:orange;">**To create an environment variable**</mark>

```
set FLASK_MAIL_ENABLED=false
set SECRET='hvjnbhfghfchdbhftbtg6tbyr4vew3wct4d54t'
```

<mark style="color:orange;">**To print environment variable**</mark>

```
echo %FLASK_MAIL_ENABLED%
```

<mark style="color:orange;">**To list all environment variables**</mark>

```
set
```

<mark style="color:orange;">**To append to existing environment variable (appending newly installed package to PATH env)**</mark>

```
set PATH=%PATH%;C:\Users\Laptop\AppData\Local\Packages\PythonSoftware......p0\LocalCache\local-packages\Python311\Scripts
```

***Note: set is not case sensitive, you can also use SET.***