moby/docs/sources/reference/commandline
Dan Walsh 61b129d818 --help option and help command should print to stdout not stderr
--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)
2014-08-21 15:35:20 -04:00
..
cli.md --help option and help command should print to stdout not stderr 2014-08-21 15:35:20 -04:00
docker_images.gif Added Reference Manual 2014-01-17 15:29:32 -05:00