Working with file attributes

IsAttributeSetOrNot.ps1

$Path      = 'C:\TEMP\TEST1'
$Filter    = '*.pdf'
$Attribute = [System.IO.FileAttributes]::Archive

# Get all files in $Path matching $Filter
Get-ChildItem -Path $Path -Filter $Filter -Recurse

# Get all files in $Path matching $Filter where $Attribute is set
Get-ChildItem -Path $Path -Filter $Filter -Recurse | Where-Object { $_.Attributes -band $Attribute }

# Get all files in $Path matching $Filter where $Attribute is NOT set
Get-ChildItem -Path $Path -Filter $Filter -Recurse | Where-Object { ($_.Attributes -band $Attribute) -ne $Attribute }

SetRemoveOrToggleAttribute.ps1

$Path      = 'C:\TEMP\TEST1'
$Filter    = '*.pdf'
$Attribute = [System.IO.FileAttributes]::Archive

function Set-FileAttribute {
    [CmdletBinding()]
    Param(
        [Parameter(Mandatory = $true, ValueFromPipeline = $true)]
        [System.IO.FileInfo[]]
        $InputObject
        ,
        [Parameter(Mandatory = $true)]
        [ValidateNotNullOrEmpty()]
        [ValidateSet('Archive', 'Hidden', 'Normal', 'ReadOnly', 'System')]
        [System.String[]]
        $Attribute
        ,
        [Parameter(Mandatory = $true)]
        [ValidateSet('Disable','Enable','Toggle')]
        [System.String]
        $Action
        ,
        [Switch]
        $PassThru = $false
    )
    process {
        foreach ($Object in $InputObject) 
        {
            foreach ($Attrib in $Attribute) {
                $FileAttribute = [System.IO.FileAttributes]::$Attrib
                Switch ($Action) {
                    'Disable' { $ScriptBlock = { ($Object.Attributes -band (0xffffffff -bxor $FileAttribute)) } }
                    'Enable'  { $ScriptBlock = { ($Object.Attributes -bor $FileAttribute) } }
                    'Toggle'  { $ScriptBlock = { ($Object.Attributes -bxor $FileAttribute) } }
                }
                $Object.Attributes = &$ScriptBlock
            }
            if ($PassThru) {
                return $Object
            }
        }
    }
}

# Set attribute
Get-ChildItem -Path $Path -Filter $Filter | Set-FileAttribute -Attribute $Attribute -Action Enable -PassThru

# Remove attribute
Get-ChildItem -Path $Path -Filter $Filter | Set-FileAttribute -Attribute $Attribute -Action Disable -PassThru

# Toggle attribute
Get-ChildItem -Path $Path -Filter $Filter | Set-FileAttribute -Attribute $Attribute -Action Toggle -PassThru