fill − fill memory with value [ -bhw ]  [ -v value ] range initializes the contents of a range of memory with a particular value.  Memory stores occur in either byte, halfword, or word size units.  The default width is word.  Alternate widths are selected by one of the following characters: b Byte (8 bits) h Halfword (16 bits) w Word (32 bits) The default value used to fill memory is 0, an alternate value may be specified by the flag.  A range specification indicates the amount of memory to fill.  Ranges may be specified in the following three ways: base Fill the contents of the width-size unit at address base#count Fill the contents of width-size units starting at address base:limit Fill the contents of width-size units with addresses >= to and < g(1spp), p(1spp), dump(1spp)