This assumes you have downloaded and setup the rabbitmqadmin command line tool.

The rabbitmqadmin command can be used to display the contents of a message in a queue. It is very important to ensure that the requeue or ackmode option is set to true, so that the message is not purged off of the queue. If using RabbitMQ version 3.7 or higher, ackmode is used.

rabbitmqadmin get queue=queue001 ackmode=true

Below version 3.7, requeue is used.

rabbitmqadmin get queue=queue001 requeue=true

Something like this should be returned.

+-------------+----------+---------------+--------------+------------------+-------------+
| routing_key | exchange | message_count |   payload    | payload_encoding | redelivered |
+-------------+----------+---------------+--------------+------------------+-------------+
| key001      |          | 1             | Hello World  | string           | False       |
+-------------+----------+---------------+--------------+------------------+-------------+