How to run a PowerShell script within a Windows batch file

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This one only passes the right lines to PowerShell:

dosps2.cmd:

@findstr/v "^@f.*&" "%~f0"|powershell -&goto:eof
Write-Output "Hello World" 
Write-Output "Hello some@com & again"

The regular expression excludes the lines starting with @f and including an & and passes everything else to PowerShell.

C:\tmp>dosps2
Hello World
Hello some@com & again

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