Remove all stopped containers: "docker rm" requires at least 1 argument

Question

I'm reading a book on docker. It is a couple of years old.

I'll cite:

If you want to get rid of all your stopped containers, you can use
the output of docker ps -aq -f status=exited , which gets the
IDs of all stopped containers. For example:
$ docker rm -v $(docker ps -aq -f status=exited)

When I run this, I get:

michael@michael-desktop:~$ sudo docker rm -v $(docker ps -aq -f status=exited)
Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.30/containers/json?all=1&filters=%7B%22status%22%3A%7B%22exited%22%3Atrue%7D%7D: dial unix /var/run/docker.sock: connect: permission denied
"docker rm" requires at least 1 argument(s).
See 'docker rm --help'.

Usage:  docker rm [OPTIONS] CONTAINER [CONTAINER...]

Remove one or more containers

Could you help me understand what should I do to gain what is intended.

Answer 1

In order to remove all our stopped containers, you can first run

$ docker ps -a

This gives you the list of running and stopped containers, from which you can select what are the containers that you wanted to get rid. But if you want to get rid of all stopped containers, then you need to use

$ docker container prune 

This removes all stopped containers by giving you the following messages.

Warning! This will remove all stopped containers.
Are you sure you want to continue? [y/N] y
Deleted Containers:
your container id list will be printed.

Answer 2

It could simply means that you have no container with a status 'exited'.

The commands becomes then:

sudo docker rm -v

The lack of any parameter would trigger the error message you see.

But today, this would be done with docker container prune anyway.