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jq

A lightweight and flexible command-line JSON processor.

Output JSON file:

cat {{file}} | jq

Output all elements from JSON array in file, or all key-value pairs from JSON objects in file:

cat {{file}} | jq .[]

Read JSON objects from file, into array, and output (inverse of jq .[]):

cat {{file}} | jq --slurp

Output first element in JSON file:

cat {{file}} | jq .[0]

Output "key" of first element in JSON file:

cat {{file}} | jq .[0].{{key}}

Output "key" of each element in JSON file:

cat {{file}} | jq 'map(.{{key}})'