# List some example files
Get-ChildItem w* -File | Format-Table name,attributes

Get-ChildItem -force | Where-Object {$_.attributes -match "Offline"}

# Select two for analysis
foreach ($file in ('.\WirelessCodes.txt', '.\urgTimes.xlsx')) {

    # Get the attributes of the file
    $attributes = (Get-ItemProperty $file).Attributes

    # Show the binary flags that were set
    "{0}: {1}" -f ($file, ([System.Convert]::ToString($attributes.value__,2))) | Write-Host

    # These are probably the attributes that govern the OneDrive settings
    foreach ($attrib in ('ReparsePoint', 'Offline', 'SparseFile')) {
        "  {0}: {1} {2}" -f (
            $attrib, 
            ($attributes -band [System.IO.FileAttributes]::$attrib),
            ($attributes.value__ -band [System.IO.FileAttributes]::$attrib.value__)
            ) | Write-Host
    }
}

$file = '.\WirelessCodes.txt'
attrib.exe -p +u $file  # Mark as online and remove the file
attrib.exe -p -u $file  # Mark as online, but keep the file
attrib.exe +p +o $file  # Mark as offline and download