Public/Environment/Get-WindowsEnvironmentVariables.ps1
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<#
.SYNOPSIS Gets all environment variable names. .DESCRIPTION Provides a list of environment variable names based on the scope. This can be used to loop through the list and generate names. .NOTES Process dumps the current environment variable names in memory / session. The other scopes refer to the registry values. .INPUTS None .OUTPUTS A list of environment variables names. .EXAMPLE Get-WindowsEnvironmentVariables -Machine #> # TODO: Get-WindowsEnvironmentVariable and Set-WindowsEnvironmentVariable # TODO: Cross Platform support function Get-WindowsEnvironmentVariables { [CmdletBinding()] param ( [Parameter(Mandatory, ValueFromPipeline)] [System.EnvironmentVariableTarget] $Scope ) # HKCU:\Environment may not exist in all Windows OSes (such as Server Core). $USER_ENV_REGKEY = 'HKCU:\Environment' $MACHINE_ENV_REGKEY = 'HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager\Environment' switch ($Scope) { 'Machine' { Get-Item $MACHINE_ENV_REGKEY | Select-Object -ExpandProperty Property } 'User' { Get-Item $USER_ENV_REGKEY -ErrorAction SilentlyContinue | Select-Object -ExpandProperty Property } 'Process' { Get-ChildItem Env:\ | Select-Object -ExpandProperty Key } default { throw "Unsupported environment scope: $Scope" } } } |