#!/bin/bash PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin export PATH   nowdate=`date +%Y-%m-%d`; mysql_pwd="密碼"; mkdir $nowdate cd $nowdate a=`mysqldump -uroot -p$mysql_pwd 數據庫名 > 數據庫名.sql`; echo $nowdate;