Date sequence generator

dateseq.sh

#!/bin/bash
if [ -z $1 ]
then
  echo "example usage: $(basename $0) 20150401 20150530"
  exit 1
fi
date=$1
while true
do
  echo $date
  if [ $date == $2 ]
  then
    break
  fi 
  date=$(date +%Y%m%d --date="$date +1 day")
done