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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)
38 lines
1.1 KiB
Markdown
38 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-history - Show the history of an image
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# SYNOPSIS
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**docker history**
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[**--help**]
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[**--no-trunc**[=*false*]]
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[**-q**|**--quiet**[=*false*]]
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IMAGE
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# DESCRIPTION
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Show the history of when and how an image was created.
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# OPTIONS
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**--help**
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Print usage statement
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**--no-trunc**=*true*|*false*
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Don't truncate output. The default is *false*.
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**-q**, **--quiet**=*true*|*false*
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Only show numeric IDs. The default is *false*.
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# EXAMPLES
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$ sudo docker history fedora
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IMAGE CREATED CREATED BY SIZE
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105182bb5e8b 5 days ago /bin/sh -c #(nop) ADD file:71356d2ad59aa3119d 372.7 MB
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73bd853d2ea5 13 days ago /bin/sh -c #(nop) MAINTAINER Lokesh Mandvekar 0 B
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511136ea3c5a 10 months ago 0 B
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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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