blockdev?()
  public
  
    
    
Returns true if the file is a block device, false if it isn’t or if the
operating system doesn’t support this feature.
File.stat("testfile").blockdev?    
File.stat("/dev/hda1").blockdev?   
   
  
    Show source    
    
      static VALUE
rb_stat_b(VALUE obj)
{
    if (S_ISBLK(get_stat(obj)->st_mode)) return Qtrue;
    return Qfalse;
}