AWS SNS how to add line breaks in message

Question

I'm trying to send SNS messages via CLI in json format.

aws sns publish --cli-input-json "{\"TopicArn\":\"xxx\",\"Message\":\"first line\n second line\",\"Subject\":\"Empty subject\"}"

But the \n doesn't work. Neither is "\r\n" or "\n". I think the string is escaped by SNS so \n doesn't work. Does anyone know how to send a message of 2 lines?(Sending 2 messages is not an option) Appreciate your advice!

Answer 1

I think \\n is actually what you are looking for. I've just tested it by sending push notifications to my device through AWS SNS.

So your message should look like this:

aws sns publish --cli-input-json "{\"TopicArn\":\"xxx\",\"Message\":\"first line\\nsecond line\",\"Subject\":\"Empty subject\"}"

Note, you should not leave the white space after the line break symbol, otherwise, your new line would start with that space.

Answer 2

aws sns publish --topic-arn "arn:aws:sns:us-west-2:0123456789012:my-topic" --message file://message.txt

message.txt is a text file containing the message to publish:

Hello World Second Line

Putting the message in a text file allows you to include line breaks .