/// <exception cref="NSch.JSchException"></exception>
        private static void KnownHosts(JSch sch, FS fs)
        {
            FilePath home = fs.UserHome();

            if (home == null)
            {
                return;
            }
            FilePath known_hosts = new FilePath(new FilePath(home, ".ssh"), "known_hosts");

            try
            {
                FileInputStream @in = new FileInputStream(known_hosts);
                try
                {
                    sch.SetKnownHosts(@in);
                }
                finally
                {
                    @in.Close();
                }
            }
            catch (FileNotFoundException)
            {
            }
            catch (IOException)
            {
            }
        }