dj - Describe a JSON document structure
cat file.json | djThe dj utility takes a JSON file as input and displays its structure similar to SQL’s DESCRIBE <table> statement.
It shows top-level as well nested elements along with data types, max length, counts, and more that can be used to quickly get an overview of the structure of a JSON document, and it is particularly helpful when dealing with large or complex files.
echo '{"details": {"name": "Super", "price": 39.99, "ratings": [3, 5, 2]}}' | dj
{
"details": {
"_type": "object",
"_structure": {
"name": {
"_type": "string",
"_maxLength": 5
},
"price": {
"_type": "float",
"_maxLength": 5
},
"ratings": [
{
"_type": "array",
"_count": 3,
"_structure": [
{
"_type": "integer",
"_maxLength": 1
}
]
}
]
}
}
}
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