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PowerShell

1	#Remove files older than...
2	Get-ChildItem -File -Recurse \| Where-Object { $_.LastWriteTime -lt (Get-Date).AddDays(-180) } \| Remove-Item -Force
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4	#Remove empty folders (may be repeated up to X times...)
5	Get-ChildItem -Directory -Recurse \| Where-Object { -not (Get-ChildItem -Path $_.FullName -Recurse -Force -ErrorAction SilentlyContinue) } \| Remove-Item -Force

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PowerShell

1	pwsh -command "New-Item -ItemType SymbolicLink -Target 'c:\i\am\the\classic\folder' -Path 'c:\this\is\a\symbolic\link'"

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PowerShell

1	pwsh -command "( Get-FileHash -Algorithm SHA256 c:\folder\file ).Hash.ToLower()"