利用mysql shell命令读取数据库信息，删除指定字段，以及字段对应的文件，适用Linux平台。
前面变量定义为数据基本配置
复制代码 代码如下:
#!/bin/bash
#Program
# delete the database'info whick state is 3
#History:
# 2014/2/23 cjp First release
# 2014/3/5/ cjp change value'setting on 117
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/usr/local/bin:/usr/local/sbin:~/bin
export PATH
host="127.0.0.1"
port="3306"
user="user"
passwd="passwd"
dbname="database"
tablename="table"
field="t_field"
outField="t_id,t_path"
fileRootPath="/var/www/html/apath"
filePath=""
#checkdown data
mysql -h$host -P$port -u$user -p$passwd $dbname -e "SET NAMES utf8;SELECT ${outField} FROM ${tablename} WHERe ${field} = 3" > data_info
date -d '1970-01-01 UTC 946684800 seconds' +"%Y-%m-%d %z" >> del_log.log
#delete image file and mysql data
sed '1d' data_info | while read line
do
echo $line > findtemp
awk '{print $2}' findtemp > imagetemp
cat imagetemp | while read imagedata
do
filePath=${fileRootPath}${imagedata}
echo $filePath >> del_log.log
rm -f $filePath
done
awk '{print $1}' findtemp > idtemp
cat idtemp | while read iddata
do
mysql -h$host -P$port -u$user -p$passwd $dbname -e "SET NAMES utf8;DELETE FROM ${tablename} WHERe s_id = ${iddata}"
done
done
rm -f data_info
rm -f imagetemp
rm -f idtemp
echo "^-^ clean!"
