外壳脚本响应按键 [英] shell script respond to keypress

问题描述

我有一个shell脚本，基本上说了

I have a shell script that essentially says something like

while true; do
    read -r input
    if ["$input" = "a"]; then 
        echo "hello world"           
    fi
done

这一切都很好，但是我只是意识到在这种情况下必须按ENTER键会带来严重的问题.我需要的是脚本在按下某个键时做出响应，而不必按回车键.

That is all well, and good, but I just realized having to hit ENTER presents a serious problem in this situation. What I need is for the script to respond when a key is pressed, without having to hit enter.

是否有一种方法可以在Shell脚本中实现此功能?

Is there a way to achieve this functionality within a shell script?

推荐答案

read -rsn1

只期待一个字母(不要等待提交)并且保持沉默(不要回信).

Expect only one letter (and don't wait for submitting) and be silent (don't write that letter back).

这篇关于外壳脚本响应按键的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！