For tricky validation checks, you should use arbitrary PowerShell code to validate. The function Copy-OldFiles will only accept files (no folders) and those that are older (in days) than specified in -Days:
function Copy-OldFiles {
param(
$Days=30,
[Parameter(ValueFromPipeline=$true)]
[System.IO.FileInfo]
[ValidateScript({ (New-TimeSpan $_.LastWriteTime).Days -gt $Days })]
$FileObject
)
param(
$Days=30,
[Parameter(ValueFromPipeline=$true)]
[System.IO.FileInfo]
[ValidateScript({ (New-TimeSpan $_.LastWriteTime).Days -gt $Days })]
$FileObject
)
process {
"Archiving file {0} (Age {1})…" -f $FileObject.FullName, (New-TimeSpan $_.LastWriteTime).Days
}
}
The validation script will then check whether the file submitted via the pipeline is older than specified in -Days. If not, the file is rejected. And this is how you could archive all log files in your Windows folder that are older than 40 days:
dir $env:windir –Filter *.log | Copy-OldFiles -Days 40 -ErrorAction SilentlyContinue
