第一次在rails开发中使用mysql数据库,结果root密码也不知道如何安装的,始终无法登录root,于是想到重置密码,在网上找了很多办法,下面这个是最靠谱的: 新建一个脚本如下: #!/bin/bashpath=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbi
第一次在rails开发中使用mysql数据库,结果root密码也不知道如何安装的,始终无法登录root,于是想到重置密码,在网上找了很多办法,下面这个是最靠谱的:
新建一个脚本如下:
#!/bin/bashpath=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/binexport path# check if user is rootif [ $(id -u) != 0 ]; then printf error: you must be root to run this script!\n exit 1fiecho =========================================================================\nprintf reset mysql root password for lnmp , written by licess \nprintf =========================================================================\nprintf lnmp is a tool to auto-compile & install nginx+mysql+php on linux \nprintf this script is a tool to reset mysql root password for lnmp \nprintf for more information please visit http://www.lnmp.org \nprintf \nprintf usage: sh reset_mysql_root_password.sh\nprintf =========================================================================\nmysql_root_password=read -p (please input new mysql root password): mysql_root_passwordif [ $mysql_root_password = ]; then echo error: password can't be null!!\n exit 1fiprintf stoping mysql...\n/etc/init.d/mysql stopprintf starting mysql with skip grant tables\n/usr/bin/mysqld_safe --skip-grant-tables >/dev/null 2>&1 &printf using mysql to flush privileges and reset password\nsleep 10printf update user set password = password('$mysql_root_password') where user = 'root'\n/usr/bin/mysql -u root mysql
其中有些地方需要自己手工修改,例如:
/usr/bin/mysqld_safe --skip-grant-tables >/dev/null 2>&1 &
在我的电脑中输入命令: whereis mysqld_safe
结果如下:
mysqld_safe: /usr/bin/mysqld_safe /usr/bin/x11/mysqld_safe /usr/share/man/man1/mysqld_safe.1.gz
所以根据个人情况就修改第31行。
还有一个是第35行,我执行:whereis mysql,结果如下:
mysql: /usr/bin/mysql /etc/mysql /usr/lib/mysql /usr/bin/x11/mysql /usr/include/mysql /usr/share/mysql /usr/share/man/man1/mysql.1.gz
至于mysql默认字符集的修改如下:
这里只考虑linux系统,找到/etc/mysql/my.cnf ,使用root权限打开,
做以下改动:
配置文件中添加如下内容:[client]default-character-set=utf8[mysqld]character_set_server=utf8init_connect='set names utf8'
修改完后,重启mysql的服务,service mysql restart
使用 mysql> show variables like 'character%';查看,发现数据库编码均已改成utf8。