github.com/yogeshlonkar/moby@v1.13.2-0.20201203103638-c0b64beaea94/docs/reference/commandline/port.md (about)

     1  ---
     2  title: "port"
     3  description: "The port command description and usage"
     4  keywords: "port, mapping, container"
     5  ---
     6  
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    15  
    16  # port
    17  
    18  ```markdown
    19  Usage:  docker port CONTAINER [PRIVATE_PORT[/PROTO]]
    20  
    21  List port mappings or a specific mapping for the container
    22  
    23  Options:
    24        --help   Print usage
    25  ```
    26  
    27  ## Examples
    28  
    29  ### Show all mapped ports
    30  
    31  You can find out all the ports mapped by not specifying a `PRIVATE_PORT`, or
    32  just a specific mapping:
    33  
    34  ```bash
    35  $ docker ps
    36  CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                                            NAMES
    37  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
    38  $ docker port test
    39  7890/tcp -> 0.0.0.0:4321
    40  9876/tcp -> 0.0.0.0:1234
    41  $ docker port test 7890/tcp
    42  0.0.0.0:4321
    43  $ docker port test 7890/udp
    44  2014/06/24 11:53:36 Error: No public port '7890/udp' published for test
    45  $ docker port test 7890
    46  0.0.0.0:4321
    47  ```