args.sh

#!/bin/bash
# Takes three args: <day> <month(s)> <year>

echo $1 $2 $3

echo "Day: $1"
OLDIFS="$IFS"
IFS=',' read -ra months <<< "$2"
IFS="$OLDIFS"
if [[ "${#months[@]}" -gt "1" ]];then
  for i in $(seq 0 $((${#months[@]} - 1)));do
    echo "Month #$i: ${months[$i]}"
  done
else
  echo "Month: $2"
fi
    
echo "Year: $3"