--- gdb "x" for "examine" commands ---

   x/<repeat><format><size> address

   repeat = how many, e.g. 16 or 32

   format = x hex
            d decimal
            i instruction
            c character
            f float

   size   = b byte ( 8 bits = 2 hex)
            w word (32 bits = 8 hex = 4 bytes)

   address = 0x8048420
             or main
	     or main+3

 examples

 # Show 16 char bytes
 x/16cb 0x8048520

 # Examine string at this location.
 x/s 0x8048520

 # Show 16 hex bytes
 x/16xb 0x8048520

 # Show 16 hex words
 x/16xw 0x8048520

 # Show 16 address words
 x/16aw 0x8048520

 # Show 16 decimal words
 x/16dw 0x8048520

 # Show 16 instructions (whether they are or not)
  x/16iw 0x8048520
 
 # Show as floating point
 x/16fw 0x8048520