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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)
30 lines
812 B
Markdown
30 lines
812 B
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-cp - Copy files/folders from the PATH to the HOSTPATH
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# SYNOPSIS
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**docker cp**
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[**--help**]
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CONTAINER:PATH HOSTPATH
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# DESCRIPTION
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Copy files/folders from a container's filesystem to the host
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path. Paths are relative to the root of the filesystem. Files
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can be copied from a running or stopped container.
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# OPTIONS
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**--help**
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Print usage statement
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# EXAMPLES
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An important shell script file, created in a bash shell, is copied from
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the exited container to the current dir on the host:
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# docker cp c071f3c3ee81:setup.sh .
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# HISTORY
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April 2014, Originally compiled by William Henry (whenry at redhat dot com)
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based on docker.com source material and internal work.
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June 2014, updated by Sven Dowideit <SvenDowideit@home.org.au>
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