1
0
Fork 0
mirror of https://github.com/moby/moby.git synced 2022-11-09 12:21:53 -05:00
moby--moby/docs/man/docker-port.1.md
Dan Walsh a2b529ead2 --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)
2015-01-06 13:40:14 +01:00

39 lines
1.4 KiB
Markdown

% DOCKER(1) Docker User Manuals
% Docker Community
% JUNE 2014
# NAME
docker-port - List port mappings for the CONTAINER, or lookup the public-facing port that is NAT-ed to the PRIVATE_PORT
# SYNOPSIS
**docker port**
[**--help**]
CONTAINER [PRIVATE_PORT[/PROTO]]
# DESCRIPTION
List port mappings for the CONTAINER, or lookup the public-facing port that is NAT-ed to the PRIVATE_PORT
# OPTIONS
**--help**
Print usage statement
# EXAMPLES
You can find out all the ports mapped by not specifying a `PRIVATE_PORT`, or
ask for just a specific mapping:
$ docker ps test
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
b650456536c7 busybox:latest top 54 minutes ago Up 54 minutes 0.0.0.0:1234->9876/tcp, 0.0.0.0:4321->7890/tcp test
$ docker port test
7890/tcp -> 0.0.0.0:4321
9876/tcp -> 0.0.0.0:1234
$ docker port test 7890/tcp
0.0.0.0:4321
$ docker port test 7890/udp
2014/06/24 11:53:36 Error: No public port '7890/udp' published for test
$ docker port test 7890
0.0.0.0:4321
# HISTORY
April 2014, Originally compiled by William Henry (whenry at redhat dot com)
June 2014, updated by Sven Dowideit <SvenDowideit@home.org.au>
November 2014, updated by Sven Dowideit <SvenDowideit@home.org.au>