Need help with scripts

This is easy to do using PowerShell, Microsoft's new scripting environment that's built into every version of Windows 7. Here are two scripts which do what you asked. You put each one into a file with a ".ps1" file type and then open up a PowerShell console (Start -> All Programs -> Accessories -> Windows PowerShell -> Windows PowerShell) to run them. You need to type "set executionpolicy unrestricted" once to allow scripts to run on the system, then you just type the full path to the script file to run it. If the script is in the current default folder, then type ".\" as the path name.


# Delete oldest file in directory "D:\X" until no more than 20GB remain:

$Files = get-childitem D:\X | where-object { $_ -is [IO.FileInfo] } | sort lastwritetime
$TotalSize = ($Files | measure-object length -sum).sum
if ($TotalSize -gt 20GB)
{
foreach ($File in $Files)
{
$TotalSize -= $File.Length
$File.Delete()
if ($TotalSize -le 20GB) { break }
}
}


# Delete oldest file in directory "D:\X" until no more than 2 files remain:

$Files = get-childitem D:\X | where-object { $_ -is [IO.FileInfo] } | sort lastwritetime
$FileCount = $Files.Count
if ($FileCount -gt 20)
{
foreach ($File in $Files)
{
$FileCount--
$File.Delete()
if ($FileCount -le 20) { break }
}
}

How could I add this to a scheduled task then to run weekly?

Create a task using Task Scheduler, use "PowerShell" as the program name and the name of the script file as the program arguments. The name of the script file MUST include a path, even if it's just ".\" to indicate "the current folder".

If I have folder setup like the following:

TV Shows
- Shows1
- Shows2
- Shows3

Will it delete files within each folder without deleted the folder - hopes this makes sense? if the item is setup as D:\TV Shows

You'd need to modify the script a bit to do that:

# Function to delete oldest files in the given folder until there are only 20 files left:
function Delete-To20Files
{
param ( $FolderName )
$Files = get-childitem $FolderName | where-object { $_ -is [IO.FileInfo] } | sort lastwritetime
$FileCount = $Files.Count
if ($FileCount -gt 20)
{
foreach ($File in $Files)
{
$FileCount--
$File.Delete()
if ($FileCount -le 20) { break }
}
}
}

# Call the Delete-To20Files Function for all subfolders of folder "D:\X":

get-childitem D:\X | where-object { $_ -is [IO.DirectoryInfo] } |
foreach-object { Delete-To20Files $_.FullName }

Excellent - thanks for the quick responses.

Tested and works great thanks.

So how would it work for the 1st script listed?

It would be basically the same - you should be able to figure it out from the changes to the second script. I think knowing how to use PowerShell is a really valuable skill, so I'll leave that as an exercise for the student