In a Unix-like operating system, you can list all environment variables by using the `printenv` command. Here are the steps:

1. Open a terminal window. This can usually be done by searching for "terminal" in your computer's search bar and clicking on the application.

2. Once the terminal window is open, type the following command and press Enter:

```
printenv
```

This will print out all environment variables.

If you want to see a specific variable, you can use the same command followed by the variable name. For example, to see the `PATH` variable, you would type:

```
printenv PATH
```

In Windows, you can use the `set` command in the Command Prompt to list all environment variables. Here are the steps:

1. Open the Command Prompt. You can do this by searching for "cmd" in the Start menu and clicking on the Command Prompt application.

2. Once the Command Prompt is open, type the following command and press Enter:

```
set
```

This will list all environment variables.

Question

In a Unix-like operating system, you can list all environment variables by using the `printenv` command. Here are the steps:

1. Open a terminal window. This can usually be done by searching for "terminal" in your computer's search bar and clicking on the application.

2. Once the terminal window is open, type the following command and press Enter:

```
printenv
```

This will print out all environment variables.

If you want to see a specific variable, you can use the same command followed by the variable name. For example, to see the `PATH` variable, you would type:

```
printenv PATH
```

In Windows, you can use the `set` command in the Command Prompt to list all environment variables. Here are the steps:

1. Open the Command Prompt. You can do this by searching for "cmd" in the Start menu and clicking on the Command Prompt application.

2. Once the Command Prompt is open, type the following command and press Enter:

```
set
```

This will list all environment variables.

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