Redirect Write-Host statements to a file

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Until PowerShell 4.0, Write-Host sends the objects to the host. It does not return any objects.

Beginning with PowerShell 5.0 and newer, Write-Host is a wrapper for Write-Information, which allows to output to the information stream and redirect it with 6>> file_name.

http://technet.microsoft.com/en-us/library/hh849877.aspx

However, if you have a lot of Write-Host statements, replace them all with Write-Log, which lets you decide whether output to console, file or event log, or all three.

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