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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
1.3 KiB
Markdown
42 lines
1.3 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-logs - Fetch the logs of a container
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# SYNOPSIS
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**docker logs**
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[**-f**|**--follow**[=*false*]]
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[**--help**]
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[**-t**|**--timestamps**[=*false*]]
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[**--tail**[=*"all"*]]
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CONTAINER
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# DESCRIPTION
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The **docker logs** command batch-retrieves whatever logs are present for
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a container at the time of execution. This does not guarantee execution
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order when combined with a docker run (i.e. your run may not have generated
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any logs at the time you execute docker logs).
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The **docker logs --follow** command combines commands **docker logs** and
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**docker attach**. It will first return all logs from the beginning and
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then continue streaming new output from the container’s stdout and stderr.
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# OPTIONS
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**--help**
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Print usage statement
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**-f**, **--follow**=*true*|*false*
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Follow log output. The default is *false*.
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**-t**, **--timestamps**=*true*|*false*
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Show timestamps. The default is *false*.
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**--tail**="all"
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Output the specified number of lines at the end of logs (defaults to all logs)
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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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July 2014, updated by Sven Dowideit <SvenDowideit@home.org.au>
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