construct argument lists and invoke utility

-n  number
       Invoke utility using as many standard input arguments  as  possible,  up  to  number  (a  positive
       decimal integer) arguments maximum. Fewer arguments shall be used if:

        * The  command line length accumulated exceeds the size specified by the -s option (or {LINE_MAX}
          if there is no -s option).

        * The last iteration has fewer than number, but not zero, operands remaining.

-I  replstr
       Insert mode: utility is executed for each line from standard input, taking the entire  line  as  a
       single  argument,  inserting  it  in  arguments  for each occurrence of replstr. A maximum of five
       arguments in arguments can each contain one or more instances of  replstr.  Any  <blank>s  at  the
       beginning  of each line shall be ignored. Constructed arguments cannot grow larger than 255 bytes.
       Option -x shall be forced on.