echo $RANDOM

#!/bin/bash
f() {
  (( $# >= 5 )) && echo $@
  true # for normal exit status
}

for (( i = ${RANDOM} % 5 + 2; i >= 0; i-- )); do # call <7 >2 times
  args=''
  for (( j = ${RANDOM} % 10; j >= 0; j-- )); do # <10 args
    args="${args} ${RANDOM}"
  done
  f ${args}
done