On Wed, 2014-10-22 at 18:43 +0800, hujianyang wrote: > +static const char optionsstr[] = > +"-h, --help print help message\n" > +"-l, --lnum logic eraseblock num to dump\n" > +"-i, --info show explicit information about ubifs-level\n" So what does this '-i' option do? I cannot grasp this from the comment.