PowerShell: Environment Variables

Sep 7, 2023

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List all environment variables:

Get-ChildItem env:
ls env:

Print an environment variable:

Get-ChildItem env:appdata
ls env:appdata

Create/set (permanent)

[Environment]::SetEnvironmentVariable("variable_name", "variable_value" ,"User")
[Environment]::SetEnvironmentVariable("variable_name", "variable_value" ,"Machine")
[Environment]::SetEnvironmentVariable("variable_name", "variable_value" ,"Process")

Unset (permanent)

[Environment]::SetEnvironmentVariable("variable_name", "" ,"User")
[Environment]::SetEnvironmentVariable("variable_name", "" ,"Machine")
[Environment]::SetEnvironmentVariable("variable_name", "" ,"Process")

Create/set (temporary):

$env:<variable-name>=100
$env:<variable-name>="C:\"

Unset (temporary):

$env:<variable-name>=""

Use an environment variable:

echo $env:<variable-name>

PowerShell: Environment Variables

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