如何在鱼壳中获得用户确认? [英] How to get user confirmation in fish shell?

问题描述

我正在尝试在鱼壳脚本中收集用户输入，特别是以下常见形式:

I'm trying to gather user input in a fish shellscript, particularly of the following oft-seen form:

This command will delete some files. Proceed (y/N)?

经过一番搜索，我仍然不知道如何干净地做到这一点.

After some searching around, I am still not sure how to do this cleanly.

这是在鱼身上做这件事的一种特殊方式吗?

Is these a special way of doing this in fish?

推荐答案

我所知道的最好方法是使用内置的 read.如果你在多个地方使用它，你可以创建这个辅助函数:

The best way I know of is to use the builtin read. If you are using this in multiple places you could create this helper function:

function read_confirm
  while true
    read -l -P 'Do you want to continue? [y/N] ' confirm

    switch $confirm
      case Y y
        return 0
      case '' N n
        return 1
    end
  end
end

并在您的脚本/函数中像这样使用它:

and use it like this in your scripts/functions:

if read_confirm
  echo 'Do stuff'
end

有关更多选项，请参阅文档:https://fishshell.com/docs/current/commands.html#read

See documentation for more options: https://fishshell.com/docs/current/commands.html#read

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