通过shell脚本对mysql的增删改查及my.cnf的配置_linux shell_

 #!/bin/bash # STRING：获取mysql默认密码的一段字符串 # 例如：A temporary password is generated for root@localhost: xxxxxx # PASSWORD：将获取到的STRING进行截取，获取localhost:右边的默认密码 # shellcheck disable=SC2006 STRING=`grep "temporary password" /var/log/mysqld.log` PASSWORD=${STRING#*localhost: }

 #!/bin/bash # shellcheck disable=SC2006 PASSWORD="你的密码"

 mysql -u root -pPASSWORD -e "xxxxxx"

 [client] user=root password=xxxxxx

 # 我的my.cnf文件在/etc/my.cnf下，不相同的可以自己去找找 # sed -i '第几行 添加的内容' 指定的文件 sed -i '1i [client]' /etc/my.cnf sed -i '2i user=root' /etc/my.cnf sed -i '3i password=xxxxxx' /etc/my.cnf

 # SQL语句 DATABASE_SQL="CREATE DATABASE IF NOT EXISTS test" # mysql -u 用户名 -e "sql语句" # 因为在my.cnf中配置了密码，所以不用写密码了 mysql -u root -e "${DATABASE_SQL}"

 # sql语句 TEST_SQL="CREATE TABLE IF NOT EXISTS test ( id varchar(20) NOT NULL, text varchar(20) NOT NULL) ENGINE=InnoDB" # mysql -u 用户名 -D "数据库名" -e "sql语句" mysql -u root -D "test" -e "${TEST_SQL}"

 # sql语句 INSERT_SQL="insert into test values ('123', 'test')" mysql -u root -D "test" -e "${INSERT_SQL}"

 DELETE_SQL="delete from test where id='123'" mysql -u root -D "test" -e "${DELETE_SQL}"

 UPDATE_SQL="update test set text='你好' where id='123'" mysql -u root -D "test" -e "${UPDATE_SQL}"

 SELECT_SQL="select id, text from test where id='123'" mysql -u root -D "test" -e "${SELECT_SQL}"

 # mysql5.7之前 SQL="update mysql set password=password("新密码") where user='root'" # mysql5.7及以后 SQL="update mysql set authentication_string=password("新密码") where user='root'" # flush privileges：刷新 mysql -u root -D "mysql" -e "${SQL};flush privileges"