List key patterns of a JSON file for jq.

Related tags

Command-line json jq command-line-tools
Overview

jqk

jqk lists key patterns of a JSON file for jq.

Why?

jq is a useful command line tool to filter values from a JSON file quickly on a terminal; however, knowing the right pattern to extract the target value is not easy to do especially when a JSON file has so many nests and arrays. jqk helps to render all keys with the jq patterns so that you can look through a JSON file using pagers like less to find the pattern you need to pass to jq.

Installation

Download a pre-built binary from the latest release.

Examples

NOTE: cat xxx.json | jqk is equivalent to jqk xxx.json.

$ cat examples/data.json | jqk
{
  .departments: [
    {
      .departments[0].employees: [
        "John Doe",
        "Jane Doe"
      ],
      .departments[0].head: "John Doe",
      .departments[0].name: "Engineering",
      .departments[0].projects: [
        {
          .departments[0].projects[0].budget: 50000,
          .departments[0].projects[0].deadline: "2023-12-31",
          .departments[0].projects[0].name: "Project A"
        },
...

$ cat examples/data.json | jqk -l
.departments
.departments[0].employees
.departments[0].head
.departments[0].name
.departments[0].projects
.departments[0].projects[0].budget
.departments[0].projects[0].deadline
.departments[0].projects[0].name
...

$ cat examples/data.json | jq .departments[].projects[].name
"Project A"
"Project B"
"Campaign X"
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