调整时间的程序:
datenow=`date +%m%d%Y`
month=`echo $datenow | cut -b1-2`
day=`echo $datenow | cut -b3-4`
year=`echo $datenow | cut -b5-8`
echo $month-$day-$year:$1
days=30
adj=$1
while [ $adj -gt 0 ]
do
case $month in
04 | 06 | 09 | 11 | 4 | 6 | 9)
days=`expr 30`
;;
02 | 2)
days=`expr 28`
;;
* )
days=`expr 31`
;;
esac
if [ $adj -ge $day ]; then
if [ $month -gt 1 ]; then
# month=`printf "%2d" $(expr $month - 1)`
month=`expr $month - 1`
else
year=`expr $year - 1`
month=12
fi
if [ $adj -ge $days ]; then
adj=`expr $adj - $days`
else
day1=$day
day=`expr $days + $day - $adj`
adj=0
fi
else
day=`expr $day - $adj`
adj=0
fi
if [ `expr length $month` -lt 2 ]; then
month=`echo 0$month`
fi
if [ `expr length $day` -lt 2 ]; then
day=`echo 0$day`
fi
echo $month-$day-$year:$1:$adj
done
echo $month-$day-$year:$1:$adj
yy=`echo $year | cut -b3-4`
echo $month$day"0000"$yy
touch $month$day0000$yy /tmp/time.then
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