利用shell删除数据表中指定信息和字段对应的文件

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

#!/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!"