处理Linux shell脚本中的输入确认

I'm writing a Linux Shell Script to automate a few things I'm doing on Ubuntu 11.04.

我正在编写一个Linux Shell脚本来自动完成我在Ubuntu 11.04上做的一些事情。

Basically, I'm writing a shell script to install NGINX, MySQL, and PHP, and then configure everything. I know how to do everything via the command-line.

基本上，我正在编写一个shell脚本来安装NGINX，MySQL和PHP，然后配置所有内容。我知道如何通过命令行完成所有事情。

However, I don't know how I'm going to handle the parts where the process asks for user input. For example, certain things I install with apt-get ask you for a confirmation i.e. (Y)es or (N)o.

但是，我不知道我将如何处理进程要求用户输入的部分。例如，我使用apt-get安装的某些内容会要求您进行确认，即（Y）es或（N）o。

How exactly would I handle auto-confirmation in the shell script i.e. to automatically confirm Yes or No when asked?

我究竟如何处理shell脚本中的自动确认，即在被问到时自动确认是或否？

4 个解决方案

#1

yes | ./script will answer y for everything.

是的| ./script会回答所有事情。

Otherwise, write a script that prints the answers you want, eg:

否则，编写一个打印所需答案的脚本，例如：

 echo N
 echo Y
 echo Y

#2

Usually you can call such interactive programs with an option to automatically answer yes to all questions. For instance, you can call apt-get with -y. From the man page :

通常，您可以调用此类交互式程序，并选择自动对所有问题回答“是”。例如，您可以使用-y调用apt-get。从手册页：

-y, --yes, --assume-yes Automatic yes to prompts; assume "yes" as answer to all prompts and run non-interactively.

-y， - 是， - assume-yes自动提示是;假设“是”作为所有提示的答案并以非交互方式运行。

#3

For Apt, the correct answer is to "preseed" your debconf database with the correct parameters. If Debconf finds the answer from its database, it won't ask. See also http://www.debian-administration.org/articles/394

对于Apt，正确的答案是使用正确的参数“预置”您的debconf数据库。如果Debconf从其数据库中找到答案，它将不会询问。另见http://www.debian-administration.org/articles/394

#4

Try Expect it might be what you are looking for.

尝试期待它可能就是你要找的东西。

#1