How to escape to add additional lines in bash commands?

Question

When I run a bash program, it asks for input. Now I have to give a paragraph with newlines as input to the function.

In terminal whenever I hit Enter, it's going to next part of program. Which character should I use for escaping line - if I type \n it's taking the string \n as an input.

You should be able to use backslash characters to escape the literal newlines - see this related topic Terminal shows > after entering \ . — steeldriver, Dec 13 '22 at 13:06
Can you include the Bash script? It will help to know how it tries to read your multiline input, and how we can provide such input in a way that it will interpret it as intended — janos, Dec 16 '22 at 04:17

Artur Meinild · Answer 1 · 2022-12-13T08:41:09.617

You can use sed to transform \n to actual newlines, like this:

#!/bin/bash
Prints "Please enter a message",  and reads input
read -rep $'Please enter a message:\n' message
Transforms any occurences of "\n" and replace them with newline
message=$(printf "${message}" | sed 's/\n/\n/g')
Prints the transformed string
echo "$message"

Result:

Please enter a message:
Paragraph\nMessage
Paragraph
Message

Inspired by this existing answer on Unix & Linux.

How to escape to add additional lines in bash commands?

1 Answers1

Prints "Please enter a message", and reads input

Transforms any occurences of "\n" and replace them with newline

Prints the transformed string