$env:username return "domain\login" instead of just "login"

[cadegenn]

Please answer the following

"OpenSSH for Windows" version
((Get-Item (Get-Command sshd).Source).VersionInfo.FileVersion) => return error
Get-Command 'C:\Program Files\OpenSSH\sshd.exe'

CommandType Name Version Source

---

Application sshd.exe 7.7.0.0 C:\Program Files\OpenSSH\sshd.exe

Server OperatingSystem
((Get-ItemProperty "HKLM:\SOFTWARE\Microsoft\Windows nt\CurrentVersion\" -Name ProductName).ProductName)
Windows Server 2016 Standard

Client OperatingSystem
Ubuntu 16.04

What is failing
$env:username return "domain\login"
usually, %USERNAME% or $env:username in normal sessions return just the login of the logged in user, wihtout the domain part.
The result is that scripts may not be portable between SSH and non-SSH sessions.

Expected output
"login" : a string with only the login of the user, without the domain part.

Actual output
"domain\login"