Deletes a file if over a certain size

delete-em.ps1

#pick your file
$Dir = "F:\MyDir\stuff.cache"

#Max size in megs (gig = 1024 megs
$SizeMax = 1024

#get's the size in mb of the file(s)
$Size = (Get-ChildItem $Dir| Measure-Object -property length -sum) 

# convert it to megs
$SizeMb="{0:N2}" -f ($size.sum / 1MB) + "MB"

# delete if calulated size is greater than set size above
if ($sizeMb -ge $sizeMax) {

  # and delete them
  Get-ChildItem $dir -Recurse | Remove-Item –Force

}