Get the files older than 30 days in a folder using Powershell

$Path = “U:*.BAK”;
$DaysToKeep = -30;
$CurrentDate = Get-Date;
$DatetoDelete = $CurrentDate.AddDays($DaysToKeep)

$DatetoDelete

Get-ChildItem $Path -Recurse | Where-Object { $_.LastWriteTime -lt $DatetoDelete } | out-file “C:\Users\yogi\Desktop\oldbackup.txt” -Append