Question

我正在尝试编写一个bash脚本来自动安装mysql。有一个实用程序“mysql_secure_installation”与mysql一起提供。这可以运行以保护mysql安装。这是一个shell脚本，调用时会接收多个交互式输入。如何在不实际修改实用程序脚本的情况下自动将这些值传递给脚本。我知道EOF标记，但我不确定我是否可以在这里使用它们。提前致谢

此实用程序脚本会询问一系列问题。如果是单一提示，我可以使用heredocs，但是如何将输入传递给后续提示。这就是执行的样子

venkatesh@venki-ws003:~/jit/jambuvaan-app$ mysql_secure_installation 




NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL
      SERVERS IN PRODUCTION USE!  PLEASE READ EACH STEP CAREFULLY!


In order to log into MySQL to secure it, we'll need the current
password for the root user.  If you've just installed MySQL, and
you haven't set the root password yet, the password will be blank,
so you should just press enter here.

Enter current password for root (enter for none): 
OK, successfully used password, moving on...

Setting the root password ensures that nobody can log into the MySQL
root user without the proper authorisation.

You already have a root password set, so you can safely answer 'n'.

Change the root password? [Y/n] n
 ... skipping.

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? [Y/n] 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? [Y/n] 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? [Y/n] Y
 - Dropping test database...
ERROR 1008 (HY000) at line 1: Can't drop database 'test'; database doesn't exist
 ... Failed!  Not critical, keep moving...
 - 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? [Y/n] Y
 ... Success!

Cleaning up...

Answer 1

这是一个你可以使用的期望脚本：

#!/usr/bin/expect -f

set timeout 2 
set password ""

spawn mysql_secure_installation

expect {
    timeout { exit 1; }
    "Enter current password for*"
}

send "$password\r"

expect {
    timeout { exit 1; }
    "Set * password? *"
}

send "n\r"

expect {
    timeout { exit 1; }
    "Remove anonymous users? *"
}

send "Y\r"

expect {
    timeout { exit 1; }
    "Disallow root login remotely? *"
}

send "Y\r"

expect {
    timeout { exit 1; }
    "Remove test database and access to it? *"
}

send "Y\r"

expect {
    timeout { exit 1; }
    "Reload privilege tables now? *"
}

send "Y\r"

expect {
    timeout { exit 1; }
    "Cleaning up..."
}

将其保存为UNIX格式的文件并运行expect script.exp。

Answer 2

那些＆＃34; EOF标记＆＃34;被称为heredocs。如果程序/脚本从stdin获取输入（大部分都可以），你可以使用它们。

some_command << EOF
do this
do that
EOF

shell脚本中的多个输入

2 个答案: