code: public static boolean isFuseInstalled() {
      try {
        if (OSUtils.isLinux()) {
          String result = ShellUtils.execCommand("fusermount", "-V");
          return !result.isEmpty();
        } else if (OSUtils.isMacOS()) {
          String result = ShellUtils.execCommand("bash", "-c", "mount | grep FUSE");
          return !result.isEmpty();
        }
      } catch (Exception e) {
        return false;
      }
      return false;
    }
docs: Checks whether fuse is installed in local file system.
  Alluxio-Fuse only support mac and linux.
  
  @return true if fuse is installed, false otherwise