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--help and help are successful commands so output should not go to error.
QE teams have requested this change, also users doing docker help | less
or docker run --help | less would expect this to work.
Usage statement should only be printed when the user asks for it.
Errors should print error message and then suggest the docker COMMAND --help
command to see usage information.
The current behaviour causes the user to have to search for the error message
and sometimes scrolls right off the screen. For example a error on a
"docker run" command is very difficult to diagnose.
Finally erros should always exit with a non 0 exit code, if the user
makes a CLI error.
Docker-DCO-1.1-Signed-off-by: Dan Walsh <dwalsh@redhat.com> (github: rhatdan)
42 lines
1.1 KiB
Markdown
42 lines
1.1 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**[=*false*]]
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[**--help**]
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[**-i**|**--interactive**[=*false*]]
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[**-t**|**--tty**[=*false*]]
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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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**--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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**-t**, **--tty**=*true*|*false*
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Allocate a pseudo-TTY. The default is *false*.
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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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