shufl generates random permutations similar to the GNU coreutils shuf command. shufl can be used to generate a random sequence of
number or randomize a sequence of inputs.
Usage of shufl:
-e, --echo treat each ARG as an input line
-n, --head-count int Output at most COUNT lines
-i, --input-range LO-HI treat each number LO through HI as an input line (default 0-0)
-o, --output string write result to FILE instead of standard output