> ## Documentation Index
> Fetch the complete documentation index at: https://docs.phidata.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Setting Environment Variables

To configure your environment for applications, you may need to set environment variables. This guide provides instructions for setting environment variables in both macOS (Shell) and Windows (PowerShell and Windows Command Prompt).

## macOS

### Setting Environment Variables in Shell

#### Temporary Environment Variables

These environment variables will only be available in the current shell session.

```shell theme={null}
export VARIABLE_NAME="value"
```

To display the environment variable:

```shell theme={null}
echo $VARIABLE_NAME
```

#### Permanent Environment Variables

To make environment variables persist across sessions, add them to your shell configuration file (e.g., `.bashrc`, `.bash_profile`, `.zshrc`).

For Zsh:

```shell theme={null}
echo 'export VARIABLE_NAME="value"' >> ~/.zshrc
source ~/.zshrc
```

To display the environment variable:

```shell theme={null}
echo $VARIABLE_NAME
```

## Windows

### Setting Environment Variables in PowerShell

#### Temporary Environment Variables

These environment variables will only be available in the current PowerShell session.

```powershell theme={null}
$env:VARIABLE_NAME = "value"
```

To display the environment variable:

```powershell theme={null}
echo $env:VARIABLE_NAME
```

#### Permanent Environment Variables

To make environment variables persist across sessions, add them to your PowerShell profile script (e.g., `Microsoft.PowerShell_profile.ps1`).

```powershell theme={null}
notepad $PROFILE
```

Add the following line to the profile script:

```powershell theme={null}
$env:VARIABLE_NAME = "value"
```

Save and close the file, then reload the profile:

```powershell theme={null}
. $PROFILE
```

To display the environment variable:

```powershell theme={null}
echo $env:VARIABLE_NAME
```

### Setting Environment Variables in Windows Command Prompt

#### Temporary Environment Variables

These environment variables will only be available in the current Command Prompt session.

```cmd theme={null}
set VARIABLE_NAME=value
```

To display the environment variable:

```cmd theme={null}
echo %VARIABLE_NAME%
```

#### Permanent Environment Variables

To make environment variables persist across sessions, you can use the `setx` command:

```cmd theme={null}
setx VARIABLE_NAME "value"
```

Note: After setting an environment variable using `setx`, you need to restart the Command Prompt or any applications that need to read the new environment variable.

To display the environment variable in a new Command Prompt session:

```cmd theme={null}
echo %VARIABLE_NAME%
```

By following these steps, you can effectively set and display environment variables in macOS Shell, Windows Command Prompt, and PowerShell. This will ensure your environment is properly configured for your applications.