2015年(55)
分类: LINUX
2015-01-16 14:20:21
今天做个linux下的操作数据库的入门例子
1.shell文件内容:
#!/bin/bash HOSTNAME="11.8.8.87" PORT="3306" USERNAME="root" PASSWORD="root" DBNAME="testa" TABLENAME="test" use_db_sql="use ${DBNAME}" -h${HOSTNAME} -P${PORT} -u${USERNAME} -p${PASSWORD} -e "${use_db_sql}" insert_sql="insert into ${TABLENAME} values('7','mike','123456')" mysql -h${HOSTNAME} -P${PORT} -u${USERNAME} -p${PASSWORD} ${DBNAME} -e "${insert_sql}"
主机地址:11.8.8.87 端口:3306 数据库:testa 表:test
2.test表结构:
mysql> desc test; +----------+-------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +----------+-------------+------+-----+---------+----------------+ | t_id | int(24) | NO | PRI | NULL | auto_increment | | username | varchar(32) | YES | | NULL | | | password | varchar(32) | YES | | NULL | | +----------+-------------+------+-----+---------+----------------+ 3 rows in set (0.00 sec)
3.我这里命名shell文件名为:mysqltestshell,在windows上编辑后上传到linux上,
修改权限:chmod +x mysqltestshell
执行./mysqltestshell,
报错:-bash: ./mysqltestshell: /bin/bash^M: bad interpreter: No such file or directory
vi mysqltestshell
然后用命令 :set ff?
可以看到dos或unix的字样. 如果的确是dos格式的, 那么你可以用set ff=unix把它强制为unix格式的, 然后存盘退出. 再运行一遍看.
4.运行结果
请自觉忽略乱码情况(此处只是测试),可以看到新增了一条记录
mysql> select * from test; +------+----------+----------------------+ | t_id | username | password | +------+----------+----------------------+ | 1 | 娴璇 | 娴璇瀵鐮 | | 2 | ?? | 娴璇瀵鐮 | | 3 | ?? | 忙碌?猫炉?氓炉?莽聽? | | 4 | ?? | ???? | | 5 | ?? | ???? | | 6 | ?? | ???? | | 7 | mike | 123456 | +------+----------+----------------------+ 7 rows in set (0.00 sec)
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mysql -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" #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 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 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
up_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}"