"docker container exec --tty --interactive"

"docker container exec --tty --interactive" - Attach to Container

Q

How to attach console to a Running Container using the "docker container exec" command? I want to get a shell TTY terminal on the container.

✍: FYIcenter.com

A

To attach a TTY terminal console to a Running Container, you can execute the /bin/sh command on the container with "--tty and "--interactive" options.

1. Check the container status to make it is still running.

fyicenter$ docker container list --latest

CONTAINER ID  IMAGE   COMMAND        CREATED        STATUS         NAMES
a4570be81d29  alpine  "sleep 36000"  8 minutes ago  Up 8 minutes   3rd_alpine

2. Send the "/bin/sh" command to the container and stay attached as the console.

fyicenter$ docker container exec --tty --interactive 3rd_alpine /bin/sh

/ # ps -ef
PID   USER     TIME  COMMAND
    1 root      0:00 sleep 36000
   31 root      0:00 /bin/sh
   41 root      0:00 ps -ef

3. End the shell TTY terminal session.

/ # exit
fyicenter$

As you can see, with the Alpine container running the "sleep" command in the background, we can a TTY shell terminal to run any Alpine Linux command.

Basically, we have a baby virtual Alpine Linux system running on the Docker Engine.

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