linux中shell 循环处理每天数据

#!/usr/bin/env bash
#author: Andy Zhou
#Date:2013.8.6

source dateutil.sh
begin=20130701
end=20130904

for (( d=$begin; d<=$end; d=`getnextday $d `)); do
echo "date:"$d
#. myshell.sh $d

#/usr/bin/env bash
#author:Andy Zhou
#date:2013.8.2
getnextday()
{
#date -d "2013-09-10 +1 day " +%Y-%m-%d
date -d "$1 +1 day " +%Y%m%d
}
getyearmonth()
{
date +%Y%m --date=$1 #shortdate
}
getday()
{
date +%d --date=$1 #shortdate
}

long_date()
{
date +%Y-%m-%d --date=$1 #shortdate
}
short_date()
{
date +%Y%m%d --date=$1 #longdate
}
long_yesterday()
{
date --date='1 day ago' +%Y-%m-%d
}
yesterday()
{
date --date='1 day ago' +%Y%m%d
}
long_today()
{
date +%Y-%m-%d
}
today()
{
date +%Y%m%d
}
now()
{
date '+%Y-%m-%d %H:%M:%S'
}
last_month()
{
date --date='1 month ago' '+%Y%m'
}
year()
{
date +%Y
}
month()
{
date +%m
}
sec2date()
{
date -d "1970-01-01 UTC $1 seconds" "+%Y%m%d"
}
sec2datetime()
{
date -d "1970-01-01 UTC $1 seconds" "+%Y%m%d %H:%M:%S"
}