How do I get the current username in Windows PowerShell?

Question

How do I get the current username in Windows PowerShell?

Answer 1

I didn't see any Add-Type based examples. Here is one using the GetUserName directly from advapi32.dll.

$sig = @'
[DllImport("advapi32.dll", SetLastError = true)]
public static extern bool GetUserName(System.Text.StringBuilder sb, ref Int32 length);
'@

Add-Type -MemberDefinition $sig -Namespace Advapi32 -Name Util

$size = 64
$str = New-Object System.Text.StringBuilder -ArgumentList $size

[Advapi32.util]::GetUserName($str, [ref]$size) |Out-Null
$str.ToString()