newswan

powershell 不必纠结 bat 特殊字符

$sour = ".\old"
$dest = ".\new"
$ext = "*.txt"

Get-ChildItem -Path $sour -Filter $ext | ForEach-Object {
	if ( -Not (Test-Path ( Join-Path  -Path $dest  -ChildPath $_.Name )) ) {
		Copy-Item  -Path $_.FullName  -Destination ( Join-Path -Path $dest -ChildPath $_.Name )
	} else {
		$i = 0
		do {
			$i++
		}
		while ( Test-Path ( Join-Path -Path $dest -ChildPath ($_.BaseName + $i + $_.Extension) ) )
		Copy-Item  -Path $_.FullName  -Destination ( Join-Path -Path $dest -ChildPath ($_.BaseName + $i + $_.Extension) )
	}
	
}
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