#!/bin/bash
echo " = = = = = back up start @ `date` = = = = = "
BACKUP_DIR="/opt/data/backup"
DUMP_CMD="/usr/bin/mysqldump"
HOST="127.0.0.1"
PORT="3306"
USER="root"
PASSWORD="123456"
cd $BACKUP_DIR
TIMESTAMP=`date +%F-%H%M`
DB_TOBACK="test" # 空格分隔多个数据库
for db in $DB_TOBACK;do
    echo "$db is in process... @ `date`"
    backup_name="$db-$TIMESTAMP.sql"
    $DUMP_CMD -h $HOST -P $PORT -u$USER -p$PASSWORD $db > $backup_name
    gzip $backup_name
    echo "done"
done

find $BACKUP_DIR  -type f -mtime +10 -name "*.gz" | xargs -r rm -r
echo " = = = = = back up end  @ `date` = = = = = "