timely random

gistfile1.sh

#!/usr/bin/env bash

function test_num(){
        sleep $(( $RANDOM % 5 ))
        echo $i
}

function echo_num(){
for (( i=1; i<=49; i++ ))
do
        test_num &
done
}


for x in $( echo_num |tail -7)
do
        echo -n "$x "
done