Returns the environment variable value associated with the provided name.
```ballerina
string port = os:getEnv("HTTP_PORT");
```



getEnv

name

string

Environment variable value if it exists or else, an empty string


Returns the current user's home directory path.
```ballerina
string userHome = os:getUserHome();
```



getUserHome

Current user's home directory if it can be determined or else, an empty string


Returns the current user's name.
```ballerina
string username = os:getUsername();
```



getUsername

Current user's name if it can be determined or else, an empty string


## Overview

This module provides APIs to retrieve information about the environment variables and the current users of the Operating System.

The APIs are platform-independent, i.e., uniform across all operating systems.

For information on the operations, which you can perform with the `os` module, see the below **Functions**.


This module provides APIs to retrieve information about the environment variables and the current users of the Operating System.


Functions

getEnv

Parameters

Return Type

getUserHome

Return Type

getUsername

Return Type

getEnv	I Returns the environment variable value associated with the provided name.
getUserHome	I Returns the current user's home directory path.
getUsername	I Returns the current user's name.