What command is used to view a list of all stopped containers?

The command to view a list of all stopped containers is indeed "docker ps -a." This command allows users to see the status of all containers, including those that are currently running and those that have stopped. The "-a" flag stands for "all," which indicates that the command should not only list active containers but also those that are inactive or stopped. This feature is particularly useful for container management, as it enables users to monitor the state of all containers on the system and take appropriate actions, such as restarting or removing them.

In contrast, other commands have more limited outputs. For instance, "docker ps" only displays the currently running containers, excluding stopped ones, while "docker container ls" would also provide a list of running containers if used without any flags. "docker stopped" is not a valid Docker command, making it irrelevant in this context. Understanding the various options available for viewing container status helps in effective management of Docker resources.