Copy files until they exceed a specified size - powershell

Question

I need to copy files to a folder until they exceed a specified size. I've written the following script but it fails with the following error:
Cannot compare "Microsoft.PowerShell.Commands.GenericMeasureInfo" because it is not IComparable.
At C:\33.ps1:8 char:1
+ "{0:N2}" -f ($colItems.sum / 1024MB)
$files = Get-ChildItem C:\source -Recurse | % { $_.FullName }
foreach($file in $files) {
do {
Copy-Item $file -Recurse D:\target
$colItems = (Get-ChildItem d:\target -recurse | `
Measure-Object -property length -sum)
"{0:N2}" -f ($colItems.sum / 1024MB)
}
while ($colItems -le 10)
}
What am I doing wrong?

Answer 1

The while condition will be verified after the first do loop. Since you already enumerate through the files, your script will copy all files.
You can omit the do-while loop and break the foreach if the limit is reached:
$files=Get-ChildItem C:\source -Recurse | % { $_.FullName }
$sum = 0
$sizeLimitInGB = 10
foreach($file in $files)
{
$colItems = (Get-ChildItem d:\target -recurse | Measure-Object -property length -sum)
if (($colItems.sum / 1GB) -gt $sizeLimitInGB)
{
break; # Limit reached.
}
Copy-Item $file -Recurse D:\target
}