如何默认Ruby“gem clean”命令的[Yn]响应？

发布时间：2020-12-17 03:35:19 所属栏目：百科来源：网络整理

导读：我经常使用 Ruby gem clean命令来保持本地gem存储库的形状. 但是,由于依赖性问题,该命令多次返回一个提示,例如： XXXXX-1.0.6 depends on [YYYYYY (~ 0.8.4)]If you remove this gems,one or more dependencies will not be met.Continue with Uninstall? [Y

我经常使用 Ruby gem clean命令来保持本地gem存储库的形状.

但是,由于依赖性问题,该命令多次返回一个提示,例如：

XXXXX-1.0.6 depends on [YYYYYY (~> 0.8.4)]
If you remove this gems,one or more dependencies will not be met.
Continue with Uninstall? [Yn]

虽然这很简单,但它需要手动干预(对于[Yn]响应),因此这使我无法创建一个简单的cron脚本来自动执行此过程.

有关如何默认响应这些gem提示的任何想法？

解决方法

你应该有一个yes命令,OSX版本有这个说：

YES(1)                    BSD General Commands Manual                   YES(1)

NAME
     yes -- be repetitively affirmative

SYNOPSIS
     yes [expletive]

DESCRIPTION
     yes outputs expletive,or,by default,``y'',forever.

HISTORY
     The yes command appeared in 4.0BSD.

4th Berkeley Distribution        June 6,1993        4th Berkeley Distribution

所以也许这会奏效：

yes n | gem clean

gem clean可能是直接从终端读取而不是标准输入.在这种情况下,你可能会期待踢：

Expect is a program that “talks” to other interactive programs according to a script. Following the script,Expect knows what can be expected from a program and what the correct response should be. An interpreted language provides branching and high-level control structures to direct the dialogue. In addition,the user can take control and interact directly when desired,afterward returning control to the script.

因此,您可以根据需要编写一个expect脚本,以“y”或“n”响应预期的提示.

（编辑：李大同）

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