打包：tar cvf FileName.tar DirName
解包： tar xvf FileName.tar
mysqldump -u root -p wpdb2023 $(mysql -u root -p -D wpdb2023 -Bse “show tables like ‘myhk_
_%'”) > hk.sql
mysqldump -u root -p wordpressdb $(mysql -u root -p -D wordpressdb -Bse “show tables like ‘p58_%'”) > p58.sql
GRANT ALL PRIVILEGES ON price58.* TO ‘wordpress’@‘localhost’;