- fprintf(stderr, "Usage: %s [can-interfaces]\n", prg);
- fprintf(stderr, " (use CTRL-C to terminate %s)\n", prg);
- fprintf(stderr, "Options: -m <mask> (default 0x00000000)\n");
- fprintf(stderr, " -v <value> (default 0x00000000)\n");
- fprintf(stderr, " -i <0|1> (inv_filter)\n");
+ fprintf(stderr, "\nUsage: %s [options] <CAN interface>+\n", prg);
+ fprintf(stderr, " (use CTRL-C to terminate %s)\n\n", prg);
+ fprintf(stderr, "Options: -m <mask> (ID filter mask. Default 0x00000000) *\n");
+ fprintf(stderr, " -v <value> (ID filter value. Default 0x00000000) *\n");
+ fprintf(stderr, " -i <0|1> (invert the specified ID filter) *\n");