shell脚本操作数据库，使用的-e参数可以执行各种sql的(创建，删除，增，删，改、查)等各种操作

 -hhostname -Pport -uusername -ppassword -e 相关mysql的sql语句，不用在mysql的提示符下运行mysql，即可以在shell中操作mysql的方法。

#!/bin/bash

HOSTNAME="192.168.111.84" #数据库信息

PORT="3306"

USERNAME="root"

PASSWORD=""

DBNAME="test_db_test" #数据库名称

TABLENAME="test_table_test" #数据库中表的名称

#创建数据库

create_db_sql="create database ${DBNAME} IF NOT EXISTS ${DBNAME}"

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

#创建表

create_table_sql="create table ${TABLE} IF NOT EXISTS ${TABLENAME} ( name varchar(20), id int(11) default 0 )"

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

#插入数据

insert_sql="insert into ${TABLENAME} values('billchen',2)"

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

#查询

select_sql="select * from ${TABLENAME}"

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

#更新数据

update_sql="update ${TABLENAME} set id=3"

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

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

#删除数据

delete_sql="delete from ${TABLENAME}"

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

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