source: vendor/bash/3.1/examples/scripts/randomcard.bash

# The following prints a random card from a card deck.
#
# cribbed from the ksh93 book, example from page 70
#
# chet@po.cwru.edu
#
declare -i i=0

# load the deck
for suit in clubs diamonds hearts spades; do
        for n in ace 2 3 4 5 6 7 8 9 10 jack queen king; do
                card[i]="$n of $suit"
                i=i+1           # let is not required with integer variables
        done
done

# and print a random card
echo ${card[RANDOM%52]}