64 lines
2 KiB
Markdown
64 lines
2 KiB
Markdown
% DOCKER(1) Docker User Manuals
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% Docker Community
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% JUNE 2014
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# NAME
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docker-exec - Run a command in a running container
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# SYNOPSIS
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**docker exec**
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[**-d**|**--detach**]
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[**--detach-keys**[=*[]*]]
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[**--help**]
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[**-i**|**--interactive**]
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[**--privileged**]
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[**-t**|**--tty**]
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[**-u**|**--user**[=*USER*]]
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CONTAINER COMMAND [ARG...]
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# DESCRIPTION
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Run a process in a running container.
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The command started using `docker exec` will only run while the container's primary
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process (`PID 1`) is running, and will not be restarted if the container is restarted.
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If the container is paused, then the `docker exec` command will wait until the
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container is unpaused, and then run
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# OPTIONS
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**-d**, **--detach**=*true*|*false*
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Detached mode: run command in the background. The default is *false*.
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**--detach-keys**=""
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Override the key sequence for detaching a container. Format is a single character `[a-Z]` or `ctrl-<value>` where `<value>` is one of: `a-z`, `@`, `^`, `[`, `,` or `_`.
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**--help**
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Print usage statement
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**-i**, **--interactive**=*true*|*false*
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Keep STDIN open even if not attached. The default is *false*.
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**--privileged**=*true*|*false*
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Give the process extended [Linux capabilities](http://man7.org/linux/man-pages/man7/capabilities.7.html)
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when running in a container. The default is *false*.
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Without this flag, the process run by `docker exec` in a running container has
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the same capabilities as the container, which may be limited. Set
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`--privileged` to give all capabilities to the process.
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**-t**, **--tty**=*true*|*false*
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Allocate a pseudo-TTY. The default is *false*.
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**-u**, **--user**=""
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Sets the username or UID used and optionally the groupname or GID for the specified command.
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The followings examples are all valid:
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--user [user | user:group | uid | uid:gid | user:gid | uid:group ]
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Without this argument the command will be run as root in the container.
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The **-t** option is incompatible with a redirection of the docker client
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standard input.
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# HISTORY
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November 2014, updated by Sven Dowideit <SvenDowideit@home.org.au>
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