 
 let inputURL = URL(fileURLWithPath: arguments.inputPath)
 
-if #available(OSX 10.12, *) {
+if #available(macOS 10.12, *) {
     os_log("Opening file at path %@",
            log: .default,
            type: .info,

do {
    let data = try Data.init(contentsOf: inputURL, options: .alwaysMapped)
    
    if #available(OSX 10.12, *) {
        os_log("Using chunk size of %{bytes}d",
               log: .default,
               type: .info,

    }
}
catch {
    if #available(macOS 10.12, *) {
        os_log("Error opening file at %@: %@",
               log: .default,
               type: .error,
