linux shell 突破

targetDate=$(cat maxdayid);
targartMonth=${targetDate::};
targartYear=${targetDate::};
echo $targartMonth;
date +%Y-%m-%d  >>curDate ;
curDate=$(cat curDate);
curMonth=${curDate::};
echo $curMonth;

sql='SELECT * FROM   t_stock_'
union=" union all "
sql_where=" where dayid>\'$targetDate\'"
#去零前缀  targartMonth
if [ ${targartMonth::} = '' ] ; then
targartMonth=${targartMonth::}
echo $targartMonth
fi

#去零前缀  curMonth
if [ ${curMonth::}='' ] ; then
curMonth=${curMonth::}
echo $curMonth
fi

rm -f stock_sql
#stock_sql

echo "[Global]"  >>stock_sql
lsql=""

if [ $targartMonth -eq $curMonth ]; then

echo select adfdfd from stcok$targartYear$curMonth >>stock_sql
else 

while [[ $curMonth -ge $targartMonth ]];do

echo $targartMonth;

if [ $targartMonth -eq $curMonth ]; then
#lsql=$lsql$sql$targartYear$targartMonth
if [ $targartMonth -ge  ]; then
lsql=$lsql$sql$targartYear$targartMonth$sql_where
else
lsql=$lsql$sql$[targartYear]$targartMonth$sql_where
fi

else
if [ $targartMonth -ge  ]; then
lsql=$lsql$sql$targartYear$targartMonth$sql_where$union
else
lsql=$lsql$sql$[targartYear]$targartMonth$sql_where$union
fi

fi
echo $lsql
targartMonth=$[targartMonth+]
done;
fi

echo $sql
#写入文件
echo '$$sql=' "'$lsql'" >>stock_sql