shell腳本登錄數據庫

#!/bin/bash
HOSTNAME="localhost" #數據庫信息

PORT="3306"

USERNAME="root"

PASSWORD="Bddvl2018d2!s131S"
DBNAME="traffic" #數據庫名稱

TABLENAME="user_info" #數據庫中表的名稱

select_sql="select * from ${TABLENAME}"

mysql -h${HOSTNAME} -P${PORT} -u${USERNAME} -p${PASSWORD} ${DBNAME} -e "${select_sql}"