PathTooLongErrorFix.ps1

# https://community.spiceworks.com/topic/1529112-path-too-long-error

# This script requires the Get-Files function below
# https://github.com/gangstanthony/PowerShell/blob/master/Get-Files.ps1

$files = Get-Files \\Fileserver\E$ -Recurse -NameOnly

# get available drives in case dealing with long file names
# we can map a drive to a long file path so it is short enough for powershell to handle
$drives = [io.driveinfo]::getdrives() | % {$_.name[0]}
$alpha = [char[]](65..90)
$avail = diff $drives $alpha | select -ExpandProperty inputobject
$drive = $avail[0] + ':'

$result = foreach ($file in $files) {
    # if filename is longer than 240 characters,
    # map a drive to the current path to shorten the filename
    $null = subst $drive /d
    $path, $newfile = ''
    if ($file.length -gt 240) {
        $path = Split-Path $file
        subst $drive $path
        $newfile = Join-Path $drive $(Split-Path $file -Leaf)
    }
    
    $acl = if ($newfile) {
        $newfile | Get-Acl
    } else {
        $file | Get-Acl
    }

    [pscustomobject]@{
        File = $file
        ACL = $acl
    }

    # un-map the drive (whether we mapped it or not, just to be sure)
    $null = subst $drive /d
}

$result | ? {$_.acl.group -match 'domain\\ad-security-group'}