encoding - Using PowerShell to write a file in UTF-8 without the BOM - Stack Overflow

Using .NET's UTF8Encoding class and passing $False to the constructor seems to work:

$MyFile = Get-Content $MyPath  $Utf8NoBomEncoding = New-Object System.Text.UTF8Encoding($False)  [System.IO.File]::WriteAllLines($MyPath, $MyFile, $Utf8NoBomEncoding)

One line [System.IO.File]::WriteAllLines($MyPath, $MyFile) is enough. This WriteAllLinesoverload writes exactly UTF8 without BOM. 

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