docker-exec

Execute a command on an already running Docker container.

TLDR

Enter an interactive shell session on an already-running container

$ docker exec --interactive --tty [container_name] [/bin/bash]
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Run a command in the background (detached) on a running container

$ docker exec --detach [container_name] [command]
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Select the working directory for a given command to execute into

$ docker exec --interactive -tty --workdir [path/to/directory] [container_name] [command]
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Run a command in background on existing container but keep stdin open

$ docker exec --interactive --detach [container_name] [command]
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Set an environment variable in a running Bash session

$ docker exec --interactive --tty --env [variable_name]=[value] [container_name] [/bin/bash]
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Run a command as a specific user

$ docker exec --user [user] [container_name] [command]
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SYNOPSIS

docker exec [OPTIONS] CONTAINER COMMAND [ARG...]

DESCRIPTION

Alias for docker container exec.

OPTIONS

-d, --detach[=false] Detached mode: run command in the background

--detach-keys="" Override the key sequence for detaching a container

-e, --env= Set environment variables

--env-file= Read in a file of environment variables

-h, --help[=false] help for exec

-i, --interactive[=false] Keep STDIN open even if not attached

--privileged[=false] Give extended privileges to the command

-t, --tty[=false] Allocate a pseudo-TTY

-u, --user="" Username or UID (format: [:])

-w, --workdir="" Working directory inside the container

SEE ALSO

docker(1)

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