用脚本自动创建和备份mysql数据库

#!/bin/bash
MYUSER=root
MYPASS=westos
MYCMD="mysql -u$MYUSER -p$MYPASS"
MYDUMP="mysqldump -u$MYUSER -p$MYPASS"
DBPATH=/home/backup
 
for dbname in tom harry natasha
do
	$MYCMD -e "create database $dbname"
done
 
[ ! -d "$DBPATH" ] && mkdir -p $DBPATH
for dbname in `mysql -uroot -pwestos -e "show databases;" | sed '1,2d' |egrep -v "mysql|schema"`
do
	$MYDUMP $DBNAME | gzip > $DBPATH/${dbname}_$(date +%F).sql.gz
done
 
for dbname in tom harry natasha
do
    echo ========${dbname}.test========
    $MYCMD -e "use $dbname;select * from ${dbname}.test;"
done

2.添加一个判断，判断是否已经存在压缩包i

#!/bin/bash
mkdir -p /mnt/mysqldump
DATABASE=`mysql -uroot -pwestos -e "show databases;" | sed '1,2d' | egrep -v "mysql|schema"`
 
for MYSQL_NAME in $DATABASE
do
     if [ -e /mnt/mysqldump/${MYSQL_NAME}.sql ];then
	read -p "${MYSQL_NAME} has been dumped!
	[S]kip [B]ackup [O]verwrite [E]xit
	please input the action:" ACTION   
	
	case $ACTION in 
	s|S)
	;;
	b|B)
	mysqldump -uroot -p$1 $MYSQL_NAME > /mnt/mysqldump/${MYSQL_NAME}_backup.sql
	;;
	o|O)
	mysqldump -uroot -p$1 $MYSQL_NAME > /mnt/mysqldump/${MYSQL_NAME}.sql
	;;
	e|E)
	echo -e "Bye"
	exit 0
	esac
  else
	mysqldump -uroot -p$1 $MYSQL_NAME > /mnt/mysqldump/${MYSQL_NAME}.sql
	echo -e "$MYSQL_NAME is backuped!"
	fi
done