How can I remove environment variables in PowerShell?

How can I remove environment variables in PowerShell?

You can remove environment variables in PowerShell using the Remove-Item cmdlet. For example, to remove a variable named 'MY_VAR', you would use: Remove-Item Env:MY_VAR.

Can I remove multiple environment variables at once?

Yes, you can remove multiple environment variables by using a loop. For example: @('VAR1', 'VAR2') | ForEach-Object { Remove-Item Env:$_ }.

What if the variable doesn't exist?

If the variable doesn't exist, PowerShell will throw an error. You can check if it exists first using Test-Path Env:MY_VAR.

Is there a way to remove all environment variables?

You can remove all user-defined environment variables by using: Get-ChildItem Env: | Where-Object { $_.Name -ne 'Path' } | Remove-Item.