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Docker inspect: Select field that has forward slash using jq

# docker inspect blah | jq '.[] | .NetworkSettings.Ports'
{
    "22/tcp": [
     {
       "HostIp": "0.0.0.0",
       "HostPort": "32776"
     }
    ]
}

How the heck do I get the HostPort value? I tried the following but that failed.

# docker inspect blah | jq '.[] | .NetworkSettings.Ports.22\/tcp.HostPort'

over 4 years ago · Santiago Trujillo

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jq supports double quotes for keys with special characters:

jq '."22/tcp".HostPort'

edit: this is mentioned in the docs, which also mention that you can add brackets to help with readability, if you want:

jq '.["22/tcp"].HostPort'

over 4 years ago · Santiago Trujillo Denunciar

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The above answer is close but needs to add a bracket to work correctly.

jq '."22/tcp"[].HostPort'

over 4 years ago · Santiago Trujillo Denunciar

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Encuentra empleos remotos

Accepted Answer · 2022-06-13T19:25:07.948Z

why not :

docker inspect  --format '{{ (index (index .NetworkSettings.Ports "22/tcp") 0).HostPort }}' blah

this will eliminate the needs of another tool.

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265

Docker inspect: Select field that has forward slash using jq

3 Respuestas

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Encuentra empleos remotos

Andres GPT