日時処理プログラム。 12桁のUTC時刻を、12桁のJST時刻に変換する。

utc2jst.sh

#!/bin/sh
#
# 日時処理
# Last update: 2012/01/12
#

# 引数があるかどうかチェック
if test $# -lt 1
then
    echo "USAGE: utc2jst yyyymmddhhnn"
    echo "   ex) utc2jst 200805131200"
    exit
fi

# 1番目の引数をDATEに代入
DATE=$1

for date in ${DATE}
do
    year=`echo ${date} | cut -c1-4`
    month=`echo ${date} | cut -c5-6`
    day=`echo ${date} | cut -c7-8`
    hour=`echo ${date} | cut -c9-10`
    minute=`echo ${date} | cut -c11-12`
    
    if [ ${hour} -ge 15 ]
    then
  HH__=`expr ${hour} + 9`
	HH_=`expr ${HH__} - 24`
	if [ ${HH_} -lt 10 ]
	then
	    HH='0'${HH_}
	else
	    HH=${HH_}
	fi
	DD_1=`expr ${day} + 1`
	if test ${DD_1} -lt 10
	then
	    if test ${#DD_1} -eq 2
	    then
		DD_=${DD_1}
	    else
		DD_="0${DD_1}"
	    fi
	else
	    DD_=${DD_1}
	fi
	if test ${month} = "01"
	then
	    if test ${DD_} -eq 32
	    then
		DD=01
		MM=02
	    else
		DD=${DD_}
		MM=01
	    fi
	    YY=${year}
	elif test ${month} = "02"
	then
	    ymod=`expr ${year} % 4`
	    if [ ${ymod} -eq 0 ]
	    then
		if test ${DD_} -eq 30
		then
		    DD=01
		    MM=03
		else
		    DD=${DD_}
		    MM=02
		fi
	    else
		if test ${DD_} -eq 29
		then
		    DD=01
		    MM=03
		else
		    DD=${DD_}
		    MM=02
		fi
	    fi
	    YY=${year}
	elif test ${month} = "03"
	then
	    if test ${DD_} -eq 32
	    then
		DD=01
		MM=04
	    else
		DD=${DD_}
		MM=03
	    fi
	    YY=${year}
	elif test ${month} = "04"
	then
	    if test ${DD_} -eq 31
	    then
		DD=01
		MM=05
	    else
		DD=${DD_}
		MM=04
	    fi
	    YY=${year}
	elif test ${month} = "05"
	then
	    if test ${DD_} -eq 32
	    then
		DD=01
		MM=06
	    else
		DD=${DD_}
		MM=05
	    fi
	    YY=${year}
	elif test ${month} = "06"
	then
	    if test ${DD_} -eq 31
	    then
		DD=01
		MM=07
	    else
		DD=${DD_}
		MM=06
	    fi
	    YY=${year}
	elif test ${month} = "07"
	then
	    if test ${DD_} -eq 32
	    then
		DD=01
		MM=08
	    else
		DD=${DD_}
		MM=07
	    fi
	    YY=${year}
	elif test ${month} = "08"
	then
	    if test ${DD_} -eq 32
	    then
		DD=01
		MM=09
	    else
		DD=${DD_}
		MM=08
	    fi
	    YY=${year}
	elif test ${month} = "09"
	then
	    if test ${DD_} -eq 31
	    then
		DD=01
		MM=10
	    else
		DD=${DD_}
		MM=09
	    fi
	    YY=${year}
	elif test ${month} = "10"
	then
	    if test ${DD_} -eq 32
	    then
		DD=01
		MM=11
	    else
		DD=${DD_}
		MM=10
	    fi
	    YY=${year}
	elif test ${month} = "11"
	then
	    if test ${DD_} -eq 31
	    then
		DD=01
		MM=12
	    else
		DD=${DD_}
		MM=11
	    fi
	    YY=${year}
	elif test ${month} = "12"
	then
	    if test ${DD_} -eq 32
	    then
		DD=01
		MM=01
		YY=`expr ${year} + 1`
	    else
		DD=${DD_}
		MM=12
		YY=${year}
	    fi
	else
	    echo 'month error !'
	    exit
	fi
    elif [ ${hour} -lt 15 ]
    then
	HH_=`expr ${hour} + 9`
	if [ ${HH_} -lt 10 ]
	then
	    HH='0'${HH_}
	else
	    HH=${HH_}
	fi
	if test ${day} -lt 10
	then
	    if test ${#day} -eq 2
	    then
		DD=${day}
	    else
		DD="0${day}"
	    fi
	else
	    DD=${day}
	fi
	MM=${month}
	YY=${year}
    fi
    y=${YY}
    m=${MM}
    d=${DD}
    h=${HH}
    n=${minute}
    ntime=${y}${m}${d}${h}${n}
    echo ${ntime}
done