启动mysql
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| sudo /usr/local/mysql/bin/mysqld_safe
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重新设置root密码
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| 1. sudo /usr/local/mysql/bin/mysqld_safe --skip-grant-tables
2. mysql -u root
3. UPDATE mysql.user SET Password=PASSWORD('password') WHERE User='root';
4. FLUSH PRIVILEGES;
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清理rvm
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| 1. rvm implode
2. 确保~/.rvm和/usr/local/rvm目录已经被删除
3. 确保~/.bashrc，~/.bash_profile, ~/.zshrc，~/.profile相关的内容已经删除
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