What does the command `docker ps` display?

The command docker ps is specifically designed to display a list of all currently running containers in Docker. When you run this command, it provides detailed information about each running container, including container IDs, names, statuses, ports mapped, and more. This functionality is essential for users who want to manage or monitor their active containers, allowing them to see which containers are up and running at any given time.

The command does not show a list of all Docker images, the system's Docker version, or active networks. Each of those areas has its own specific commands for retrieval, such as docker images for images, docker version for checking the Docker version, and docker network ls for listing networks. Understanding the scope and purpose of docker ps helps users effectively manage their containerized applications.