A Linux administrator found many containers in an exited state. Which of the following commands will allow the administrator to clean up the containers in an exited state?

Question

Options

• Adocker rm --all
• Bdocker rm $(docker ps -aq)
• Cdocker images prune *
• Ddocker rm --state exited

• A
  6% (1)
• B
  82% (14)
• D
  12% (2)

Explanation

docker rm $(docker ps -aq) removes all stopped (exited) containers. The subcommand docker ps -aq lists the IDs of all containers regardless of state using the -a (all) and -q (quiet/IDs only) flags; passing those IDs to docker rm removes them. Running containers cannot be removed with docker rm unless -f is used, so this command effectively targets exited containers in practice. docker rm --all is not valid Docker syntax. docker images prune * is invalid syntax and targets images, not containers. docker rm --state exited is also not valid Docker syntax.

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