Powershell script to delete files not specified in a list
Data:
-- begin exclusions.txt --a.txtb.txtc.txt-- end --Code:
# read all exclusions into a string array$exclusions = Get-Content .\exclusions.txtdir -rec *.* | Where-Object { $exclusions -notcontains $_.name } | ` Remove-Item -WhatIfRemove the -WhatIf switch if you are happy with your results. -WhatIf shows you what it would do (i.e. it will not delete)
-Oisin
If the files exist in the current folder then you can do this:
Get-ChildItem -exclude (gc exclusions.txt) | Remove-Item -whatifThis approach assumes each file is on a separate line. If the files exist in subfolders then I would go with Oisin's approach.
actually this only seems to work for the first directory rather than recursing - my altered script recurses properly.
$exclusions = Get-Content .\exclusions.txtdir -rec | where-object {-not($exclusions -contains [io.path]::GetFileName($_))} | ` where-object {-not($_ -is [system.IO.directoryInfo])} | remove-item -whatif