#!/bin/bash# FileName: alldateduringtwodays1.sh# Description: Print all the date during the two days you inpute.# Simple Usage: ./alldateduringtwodays1.sh 2017-04-01 2017-06-14 or ./alldateduringtwodays1.sh 20170401 20170614 [-]# (c) 2017.6.15 vfhky https://typecodes.com/linux/alldateduringtwodays1.html# https://github.com/vfhky/shell-tools/blob/master/datehandle/alldateduringtwodays1.shif [[ $# -le 2 || $# -gt 3 ]]; then echo "Usage: $0 2017-04-01 2017-06-14 [-] or $0 20170401 20170614 [-] ." exit 1fiSTART_DAY=$(date -d "$1" +%s)END_DAY=$(date -d "$2" +%s)# The spliter bettwen year, month and day.SPLITER=${3}# Declare an array to store all the date during the two days you inpute.declare -a DATE_ARRAYfunction genAlldate{ if [[ $# -ne 3 ]]; then echo "Usage: genAlldate 2017-04-01 2017-06-14 [-] or genAlldate 20170401 20170614 [-] ." exit 1 fi START_DAY_TMP=${1} END_DAY_TMP=${2} SPLITER_TMP=${3} I_DATE_ARRAY_INDX=0 # while [[ "${START_DAY}" -le "${END_DAY}" ]]; do while (( "${START_DAY_TMP}" <= "${END_DAY_TMP}" )); do cur_day=$(date -d @${START_DAY_TMP} +"%Y${SPLITER_TMP}%m${SPLITER_TMP}%d") DATE_ARRAY[${I_DATE_ARRAY_INDX}]=${cur_day} # We should use START_DAY_TMP other ${START_DAY_TMP} here. START_DAY_TMP=$((${START_DAY_TMP}+86400)) ((I_DATE_ARRAY_INDX++)) #sleep 1 done}# Call the funciotn to generate date during the two days you inpute.genAlldate "${START_DAY}" "${END_DAY}" "${SPLITER}"# [Method 1] Traverse the array.echo -e "[Method 1] Traverse the array."for SINGLE_DAY in ${DATE_ARRAY[@]};do echo ${SINGLE_DAY}done# [Method 2] Traverse the array.echo -e "/n[Method 2] Traverse the array."for i in "${!DATE_ARRAY[@]}"; do  printf "%s/t%s/n" "$i" "${DATE_ARRAY[$i]}"done# [Method 3] Traverse the array.echo -e "/n[Method 3] Traverse the array."i=0while [ $i -lt ${#DATE_ARRAY[@]} ]do echo ${DATE_ARRAY[$i]} let i++done# If you do not need this array any more, you can unset it.# unset DATE_ARRAYexit 0