stat.blockdev?   → true or false

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?    #=> false
File.stat("/dev/hda1").blockdev?   #=> true

Source Code

/*
*  call-seq:
*     stat.blockdev?   => true or false
*  
*  Returns <code>true</code> if the file is a block device,
*  <code>false</code> if it isn't or if the operating system doesn't
*  support this feature.
*     
*     File.stat("testfile").blockdev?    #=> false
*     File.stat("/dev/hda1").blockdev?   #=> true
*     
*/

static VALUE
rb_stat_b(obj)
   VALUE obj;
{
#ifdef S_ISBLK
   if (S_ISBLK(get_stat(obj)->st_mode)) return Qtrue;

#endif
   return Qfalse;
}