Copy files until they exceed a specified size

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
}