create a unique directory name based of system.guid

Get-UglyButShortUniqueDirname.ps1

function Get-UglyButShortUniqueDirname {
  [CmdletBinding()]
  param (
      
  )

  $t = "$([System.Guid]::NewGuid())".Replace("-", "")
  Write-Verbose "base guid: $t"
  $t = "$(0..$t.Length | % { if (($_ -lt $t.Length) -and !($_%2)) { [char][byte]"0x$($t[$_])$($t[$_+1])" } })".replace(" ", "").Trim()
  Write-Verbose "guid as ascii: $t"
 ([System.IO.Path]::GetInvalidFileNameChars() | % { $t = $t.replace($_, '.') })
  Write-Verbose "dirname: $t"
  $t
}

Q on SO: https://stackoverflow.com/questions/70865502/how-to-create-a-short-but-still-unique-directory-name-in-powershell