Как использовать команды scp и ssh в одном скрипте без каких-либо ключей?

Для установки последней версии MySql 5.7 на RHEL/Centos 7. Есть несколько следующих шагов:

Шаг 1-: Добавьте указанный ниже репозиторий EPEL

$ sudo rpm -iUvh http://dev.mysql.com/get/mysql57-community-release-el7-7.noarch.rpm

Шаг 2-: Установите MySql Server, используя нижеприведенный yum installer.

$ sudo yum install mysql-server 

Шаг 3-: Добавьте в системный Startup и запустите Mysql Server.

$ sudo systemctl enable mysqld
$ sudo systemctl start mysqld

Шаг 4-: Сбросьте пароль root сервера MySql.

sudo grep 'temporary password' /var/log/mysqld.log

Выведите что-то вроде:

10.744785Z 1 [Note] A temporary password is generated for root@localhost: o!5y,oJGALQa

Используйте вышеуказанный пароль в процессе сброса mysql_secure_installation.

$ sudo mysql_secure_installation
Securing the MySQL server deployment.

Enter password for user root: 
The 'validate_password' plugin is installed on the server.
The subsequent steps will run with the existing configuration
of the plugin.
Using existing password for root.

Estimated strength of the password: 100 
Change the password for root ? ((Press y|Y for Yes, any other key for No) : y

New password: 

Re-enter new password: 

Estimated strength of the password: 100 
Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them. This is intended only for
testing, and to make the installation go a bit smoother.
You should remove them before moving into a production
environment.

Remove anonymous users? (Press y|Y for Yes, any other key for No) : y
Success.


Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network.

Disallow root login remotely? (Press y|Y for Yes, any other key for No) : y
Success.

By default, MySQL comes with a database named 'test' that
anyone can access. This is also intended only for testing,
and should be removed before moving into a production
environment.


Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y
 - Dropping test database...
Success.

 - Removing privileges on test database...
Success.

Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.

Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y
Success.

All done!

Вы успешно сбросили корневой пароль сервера MySql.

Шаг 5-: Используйте следующую команду для проверки подключения или отсутствия подключения сервера mysql.

$ mysql -u root -p

Выход-:

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 5.7.12 MySQL Community Server (GPL)

Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

См. мою статью: install-latest-mysql-5-7-rhelcentos-7