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moby--moby/man/docker-exec.1.md

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% DOCKER(1) Docker User Manuals
% Docker Community
% JUNE 2014
# NAME
docker-exec - Run a command in a running container
# SYNOPSIS
**docker exec**
[**-d**|**--detach**[=*false*]]
[**--help**]
[**-i**|**--interactive**[=*false*]]
[**-t**|**--tty**[=*false*]]
[**-u**|**--user**[=*USER*]]
CONTAINER COMMAND [ARG...]
# DESCRIPTION
Run a process in a running container.
The command started using `docker exec` will only run while the container's primary
process (`PID 1`) is running, and will not be restarted if the container is restarted.
If the container is paused, then the `docker exec` command will wait until the
container is unpaused, and then run
# OPTIONS
**-d**, **--detach**=*true*|*false*
Detached mode: run command in the background. The default is *false*.
**--help**
Print usage statement
**-i**, **--interactive**=*true*|*false*
Keep STDIN open even if not attached. The default is *false*.
**-t**, **--tty**=*true*|*false*
Allocate a pseudo-TTY. The default is *false*.
**-u**, **--user**=""
Sets the username or UID used and optionally the groupname or GID for the specified command.
The followings examples are all valid:
--user [user | user:group | uid | uid:gid | user:gid | uid:group ]
Without this argument the command will be run as root in the container.
The **-t** option is incompatible with a redirection of the docker client
standard input.
# HISTORY
November 2014, updated by Sven Dowideit <SvenDowideit@home.org.au>