linux 下备份MySQL数据库 并删除7天前的备份数据

#!/bin/bash
#备份数据库hz jshuabo sdhuabo
name=$(date +%Y%m%d)
/alidata/server/mysql-5.1.73/bin/mysqldump -u root -p123456 hz > /root/sqlBackup/hz.$name.sql
/alidata/server/mysql-5.1.73/bin/mysqldump -u root -p123456 jshuabo > /root/sqlBackup/jshuabo.$name.sql
/alidata/server/mysql-5.1.73/bin/mysqldump -u root -p123456 sdhuabo > /root/sqlBackup/sdhuabo.$name.sql

#删除一周之前的备份文件
file_path="/root/sqlBackup"
#方法a
#rm -rf `find $file_path ‘*.sql‘ -mitime 7 -print` > delete.log;
#方法b
find $file_path -mtime +7 -type f|xargs rm -f
#方法c
#rm -f `find $file_path -mtime +7 -type f`