**Example 1: To publish a message to a topic** The following ``publish`` example publishes the specified message to the specified SNS topic. The message comes from a text file, which enables you to include line breaks. :: aws sns publish \ --topic-arn "arn:aws:sns:us-west-2:123456789012:my-topic" \ --message file://message.txt Contents of ``message.txt``:: Hello World Second Line Output:: { "MessageId": "123a45b6-7890-12c3-45d6-111122223333" } **Example 2: To publish an SMS message to a phone number** The following ``publish`` example publishes the message ``Hello world!`` to the phone number ``+1-555-555-0100``. :: aws sns publish \ --message "Hello world!" \ --phone-number +1-555-555-0100 Output:: { "MessageId": "123a45b6-7890-12c3-45d6-333322221111" }