function Convert-Eol() {
    Param(
        [Parameter(Mandatory=$true)]
        [ValidateNotNullOrEmpty()]
        [string[]] $Files,

        [Parameter(Mandatory=$false)]
        [ValidateNotNullOrEmpty()]
        [Text.Encoding] $Encoding = [Text.Encoding]::Default,

        [Parameter(Mandatory=$true)]
        [ValidateNotNullOrEmpty()]
        [ValidateSet("Cr", "Crlf", "Lf")]
        [string] $Eol
    )

    $eols = @{
        "Cr"   = "`r";
        "Crlf" = "`r`n";
        "Lf"   = "`n";
    }

    foreach ($file in $Files) {
        $file = Resolve-Path $file

        $text = [IO.File]::ReadAllText($file)
        if ($Eol -ne "Lf") {
            $text = $text -replace $eols["Lf"], $eols[$Eol]
        }

        [IO.File]::WriteAllText($file, $text)
    }
}