在bash脚本中建议用户输入的答案 [英] Suggest answer to user input in bash scripting

问题描述

这里是一个例子:

#!/bin/bash
echo -e "Enter IP address: \c"
read
echo $REPLY

但是我想让用户更容易回答.我想向用户提供答案.它应该看起来像这样:

But I want to make it easier for the user to answer. I'd like to offer an answer to the user. It should look something like this:

输入您的IP:192.168.0.4

Enter your IP: 192.168.0.4

用户可以直接按Enter键并同意192.168.0.4，或者删除一些字符(例如，删除带有一个退格键的"4"，然后键入3).

And the user can just press Enter and agree with 192.168.0.4, or can delete some characters (for example delete "4" with one backspace and type 3 instead).

如何进行这样的输入?bash有可能吗?

How to make such an input? It is possible in bash?

推荐答案

bash的读取具有readline支持(Jonathan Leffler建议也将提示也置于读取状态)

bash's read has readline support ( Jonathan Leffler suggests to put the prompt into read as well)

#!/bin/bash
read -p "Enter IP address: " -e -i 192.168.0.4 IP
echo $IP

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