How to check open shells on a container?

Question

How could I check if I have currently running interactive shells on a container, like for instance opened with:

docker exec -it mycontainer sh

Is there a way to retrieve this information ?

Answer 1

You can use docker ps to get container ID.
Exec into container with

docker exec -it mycontainer sh

or

docker exec -it mycontainer bash

Then, in the shell of the container, run the command hostname, check output with container ID.