Executing commands with docker exec - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to run a shell inside a running container named 'webapp'.

Docker

docker exec -it [1] /bin/bash

Drag options to blanks, or click blank then click option'

Awebapp

Brun

Cbuild

Dimage

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'run' or 'build' instead of the container name.

Forgetting to specify the container name.

The docker exec command requires the container name or ID to specify where to run the command. Here, 'webapp' is the container name.

2fill in blank

medium

Complete the command to list files inside the container 'db' in the '/var/log' directory.

Docker

docker exec [1] ls /var/log

Drag options to blanks, or click blank then click option'

A-d

B-it

Ccontainer

Ddb

Attempts:

3 left

💡 Hint

Common Mistakes

Using options like '-it' or '-d' instead of the container name.

Using the word 'container' instead of the actual container name.

The container name 'db' is needed to tell Docker where to run the ls command.

3fill in blank

hard

Fix the error in the command to run 'env' inside container 'app1' interactively.

Docker

docker exec [1] app1 env

Drag options to blanks, or click blank then click option'

A-it

B-d

C--rm

D-p

Attempts:

3 left

💡 Hint

Common Mistakes

Using -d which runs the command detached and does not allow interaction.

Using --rm which is for removing containers after run, not exec.

The -it option allows interactive terminal access, which is needed to run commands interactively inside the container.

4fill in blank

hard

Fill both blanks to run 'cat /etc/hosts' inside container 'backend' with a pseudo-TTY and keep STDIN open.

Docker

docker exec [1] [2] cat /etc/hosts

Drag options to blanks, or click blank then click option'

A-it

B-d

Cbackend

D--rm

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the order of container name and options.

Using -d which detaches and does not allow interaction.

The container name 'backend' is needed to specify where to run the command. The -it option allows interactive terminal access.

5fill in blank

hard

Fill all three blanks to run 'echo Hello' inside container 'frontend' interactively and detach after execution.

Docker

docker exec [1] [2] [3] echo Hello

Drag options to blanks, or click blank then click option'

A-it

Bfrontend

C-d

D--rm

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the order of options and container name.

Using --rm which is not valid for exec.

The container name is 'frontend'. The -it option allows interactive terminal, and -d runs the command in detached mode.