twelve days of christmas, in bash

twelve-days-of-christmas.bash

#!/path/to/your/bash

dox=( [1]='a partridge in a pair tree'
     '2 turtle doves, and'
     '3 french hens'
     '4 calling birds'
    $'5 gold rings\n     ...'
     '6 geese a-laying'
     '7 swans a-swimming'
     '8 maids a-milking'
     '9 ladies dancing'
    '10 lords a-leaping'
    '11 pipers piping'
    '12 drummers drumming')
suf=( [1]=st nd rd )

for ((i=1;i<=${#dox[@]};i++)) do
  printf '\nOn the %d%s day of Christmas, my true love sent to me:\n' $i ${suf[i]:-th}
  for ((j=i;j>=1;j--)) do
    printf '   %s\n' "${dox[j]}"
  done
done