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@@ -0,0 +1,52 @@
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+## Arch linux 安装 mysql 没有默认数据库，要先初始化
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+```
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+mariadb-install-db --user=mysql --basedir=/usr --datadir=/var/lib/mysql
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+```
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+
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+## mysql root 帐户没有密码没法登陆操作
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+```
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+systemctl stop mysql
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+mysqld_safe --skip-grant-tables &
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+mysql -uroot
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+```
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+
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+## 完整代码解决方案(arch linux 部分适用)
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+```
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+Full code solution
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+1. run bash commands
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+1. first, run these bash commands
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+
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+sudo /etc/init.d/mysql stop # stop mysql service
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+sudo mysqld_safe --skip-grant-tables & # start mysql without password
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+# enter -> go
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+mysql -uroot # connect to mysql
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+
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+2. then run mysql commands => copy paste this to cli manually
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+
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+use mysql; # use mysql table
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+update user set authentication_string=PASSWORD("") where User='root'; # update password to nothing
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+update user set plugin="mysql_native_password" where User='root'; # set password resolving to default mechanism for root user
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+
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+flush privileges;
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+quit;
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+
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+3. run more bash commands
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+
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+sudo /etc/init.d/mysql stop
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+sudo /etc/init.d/mysql start # reset mysql
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+# try login to database, just press enter at password prompt because your password is now blank
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+mysql -u root -p
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+
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+4. Socket issue (from your comments)
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+When you see a socket error, a community came with 2 possible solutions:
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+
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+sudo mkdir -p /var/run/mysqld; sudo chown mysql /var/run/mysqld
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+sudo mysqld_safe --skip-grant-tables &
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+(thanks to @Cerin)
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+
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+Or
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+
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+mkdir -p /var/run/mysqld && chown mysql:mysql /var/run/mysqld
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+(thanks to @Peter Dvukhrechensky)
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+
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+``
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