How do I change a file's attribute using Powershell?

Question

I have a Powershell script that copies files from one location to another. Once the copy is complete I want to clear the Archive attribute on the files in the source location t

Answer 1

From here:

function Get-FileAttribute{
    param($file,$attribute)
    $val = [System.IO.FileAttributes]$attribute;
    if((gci $file -force).Attributes -band $val -eq $val){$true;} else { $false; }
} 


function Set-FileAttribute{
    param($file,$attribute)
    $file =(gci $file -force);
    $file.Attributes = $file.Attributes -bor ([System.IO.FileAttributes]$attribute).value__;
    if($?){$true;} else {$false;}
}