What command is used to view running containers in real-time?

The command to view running containers in real-time is indeed "docker ps." This command provides a snapshot of all currently running containers, showing their container ID, names, status, and other useful information such as port mappings and the image used to create the container.

Using "docker ps" allows users to quickly check the status of their active containers and identify any potential issues. It's particularly useful for monitoring applications in production environments or during development when multiple containers may be running simultaneously.

The other options do not serve the same purpose. "docker ls" is not a valid command as there is no such command in the Docker CLI. "docker show" and "docker view" are also not recognized commands for managing Docker containers. These options highlight the importance of knowing the correct command syntax and ensuring familiarity with Docker's command line interface to effectively manage containerized applications.