The for OS detection in .net core

something.cs

public static class OS
    {
        public static bool IsWin() =>
            RuntimeInformation.IsOSPlatform(OSPlatform.Windows);

        public static bool IsMac() =>
            RuntimeInformation.IsOSPlatform(OSPlatform.OSX);

        public static bool IsGnu() =>
            RuntimeInformation.IsOSPlatform(OSPlatform.Linux);

        public static string GetCurrent()
        {
            return
            (IsWin() ? "win" : null) ??
            (IsMac() ? "mac" : null) ??
            (IsGnu() ? "gnu" : null);
        }
    }