Powershell: powershell删除N天前的文件

在C:\Users\Administrator\Desktop\temp1目录下随机建5个2019年前的文件并把他们删除。：）

$path="C:\Users\Administrator\Desktop\temp1"for ($i=1;$i -le 5){$year1=201$year2= Get-Random -Minimum 0 -Maximum 8$year="$year1$year2"$month= Get-Random -Minimum 1 -Maximum 12$day= Get-Random -Minimum 1 -Maximum 28$filelastwite=[datetime]::Parse("$year-$month-$day")$filelastwite$filename=-join ([char[]](97..122)| Get-Random -Count 5)(New-Item -name $filename -Path $path -ItemType file).LastWriteTime=$filelastwite$i++}Write-Host "以下文件将会被删除！"(Get-ChildItem -Path $path |where {$_.LastWriteTime -le (get-date).adddays(-3) -and $_ -is [System.IO.FileInfo]}).fullname(Get-ChildItem -Path $path |where {$_.LastWriteTime -le (get-date).adddays(-3) -and $_ -is [System.IO.FileInfo]}).fullname|Remove-Item