提示用户不要执行bash命令替换 [英] Prompt user from bash command substitution

问题描述

我正在寻找一种单行代码，以提示用户进行多次输入并使用用户输入作为参数来执行命令.

I am looking for a one-liner to prompt user for multiple inputs and execute a command using the user inputs as arguments.

幼稚的方法是:

read -p shirt_size: shirt_size
read -p age: age
the_command some_complicated_arguments $shirt_size $age

不幸的是，它很冗长. 这是一种行为相同的单线纸:

Unfortunately it is verbose. Here is a one-liner that behaves the same:

the_command some_complicated_arguments \
  `>&2 printf shirt_size:; head -n 1` `>&2 printf age:; head -n 1`

不幸的是，它既不紧凑也不可读. 我希望它具有如下可读性:

Unfortunately it is neither compact nor readable. I would like it to be as readable as:

the_command some_complicated_arguments \
  `input shirt_size` `input age`

我希望该解决方案使用bash内置命令或程序，这些命令通常在Linux环境中可用.

I would prefer the solution to use bash built-in command or programs usually available on Linux environment.

推荐答案

听起来像是一项家庭作业问题，可让您了解功能.如果您有类似的功能:

Sounds like a homework question to get you to look at functions. If you had a function like:

input() { read -p "$1:" user_input; echo "$user_input"; }

然后您的行:

the_command some_complicated_arguments "$(input shirt_size)" "$(input age)"

将提示并打印整行.尽管这并不能检查输入是否有效.

Would prompt and print the complete line. Although this does nothing to check for valid input or no input.

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