Is it possible to list all environment variables from a Windows' command prompt? Something equivalent to PowerShell's gci env: (or ls env: or dir env:).

Yes, you can list all environment variables from a Windows command prompt using the set command. Simply typing set and pressing Enter will display a list of all defined environment variables along with their values.

Here's how you can do it:

    Open the Command Prompt in Windows.

    Type set and press Enter.

For example:

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C:\> set

This will display a list of all environment variables and their values.

Please note that the output might be quite extensive since there are usually many environment variables defined on a Windows system. You might want to use a pager like more or redirect the output to a file for easier examination if needed:

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C:\> set | more
C:\> set > env_variables.txt