linuxのシェルスクリプトで日付でループする ref: http://qiita.com/treeclad/items/2f0a8454bbead2f070d2

dateloop.sh

#!/bin/sh

#
# YYYY-MM-DD
#
STARTDATE=2014-02-20
ENDDATE=2014-03-02

CURRENTDATE=$STARTDATE
while [ 1 ] ; do

        # 処理
        echo $CURRENTDATE

        if [ $CURRENTDATE = $ENDDATE ] ; then
                break
        fi

        CURRENTDATE=`date -d "$CURRENTDATE 1day" "+%Y-%m-%d"`
done