#!/bin/bash

#
# Bash script to print list of dates from starting date to ending date
# Written by Arul John
# Blog Post: https://aruljohn.com/blog/bash-sequence-of-dates/
#

# Accept arguments -- start date and end date
if [[ $# -lt 2 ]] ; then
    echo "USAGE: $0 <START-DATE> <END-DATE>"
    exit 0
fi

# Get start date and end date and convert both to their epoch dates
start_date=$(date --date "$1" +%s)
end_date=$(date --date "$2" +%s)

# Loop through both dates and print all dates in between
while [[ "$start_date" -le "$end_date" ]]; do
    current_date="$(date -d "$(date -d @$start_date)" -I)"
    echo "$current_date"
    start_date=$((start_date + 86400))
done