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RustingSword/get_date_diff.sh

Last active November 4, 2016 05:37
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计算日期
Raw
get_date_diff.sh
DATE=08/16/2015
DIFF=$(( ( $(date +%s) - $(date -d "$DATE" +%s ) ) / (24*60*60) ))
echo $DIFF
echo $(date -d "$DIFF days ago" +%Y%m%d)
# -----------------------
FIRST_DAY=20161023
LAST_DAY=20161103
START_DATE=$(( ( $(date +%s) - $(date -d "${FIRST_DAY}" +%s ) ) / (24*60*60) ))
END_DATE=$(( ( $(date +%s) - $(date -d "${LAST_DAY}" +%s ) ) / (24*60*60) ))
for (( loop=${START_DATE}; loop>=${END_DATE}; loop--))
do
DAY=`date -d "${loop} days ago" +%Y%m%d`
echo $DAY
done
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