github.com/brahmaroutu/docker@v1.2.1-0.20160809185609-eb28dde01f16/docs/reference/commandline/port.md (about)

     1  <!--[metadata]>
     2  +++
     3  title = "port"
     4  description = "The port command description and usage"
     5  keywords = ["port, mapping, container"]
     6  [menu.main]
     7  parent = "smn_cli"
     8  +++
     9  <![end-metadata]-->
    10  
    11  # port
    12  
    13  ```markdown
    14  Usage:  docker port CONTAINER [PRIVATE_PORT[/PROTO]]
    15  
    16  List port mappings or a specific mapping for the container
    17  
    18  Options:
    19        --help   Print usage
    20  ```
    21  
    22  You can find out all the ports mapped by not specifying a `PRIVATE_PORT`, or
    23  just a specific mapping:
    24  
    25      $ docker ps
    26      CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                                            NAMES
    27      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
    28      $ docker port test
    29      7890/tcp -> 0.0.0.0:4321
    30      9876/tcp -> 0.0.0.0:1234
    31      $ docker port test 7890/tcp
    32      0.0.0.0:4321
    33      $ docker port test 7890/udp
    34      2014/06/24 11:53:36 Error: No public port '7890/udp' published for test
    35      $ docker port test 7890
    36      0.0.0.0:4321