Here, we use jq's notation to access Senator Ernst's terms as an attribute: take care to notice the square brackets which denote the array that is contained in terms: cat ernst.json | jq '. Jeremiah,"Springfield, Jr.",Jebediah,1942,2003,M,Kalamazoo,Michigan jq 'flatten' Create a range of numbers: jq 'range(2 4)' Display the type of each item: jq 'map(type)' Sort an array of basic type: jq 'sort' Sort an array of objects: jq 'sortby(.foo)' Group by a key - opposite to flatten: jq 'groupby(.foo)' Minimun value of an array: jq 'min'.See also min, max, minby(pathexp), maxby(pathexp) Remove. As we’re going to see, there are many predefined filters that we can use. Each filter takes an input and emits JSON to standard out. Lucy Jo Mary,Carrie-Paulson,1967,F,Omaha,Nebraska Learn Concepts with AI What is jq and why is it useful in working with JSON in BASH How to install jq on macOS How to use jq to parse JSON data from an. jq is built around the concept of filters that work over a stream of JSON. JSON is more verbose, but easier to read than CSV.ĬSV: firstname,lastname,middlename,birthyear,deathyear,gender,city,stateĪlexander,Smith,Johnson,1918,1955,M,Madison,Wisconsin To install jq: # download directly into ~/bin_compcivĬheck out the tutorial on jq here. If you've haven't installed the pup HTML parsing tool, or any other tool which required you to edit your ~/.bashrc's' PATH and create the ~/bin_compciv directory, then follow the instructions here: Installing programs for your personal Stanford account. You can use it to slice and filter and map and transform structured data with the same ease that sed, awk, grep and friends let you play with text. Processing is done locally: no data send. Jq is a program described as " sed for JSON data": Analyze your JSON string as you type with an online Javascript parser, featuring tree view and syntax highlighting. JSON stands for JavaScript Object Notation and is nearly ubiquitous as a data format, for its lightweight nature and (relatively) ease of human-readability. Most of the popular API and data services use the JSON data format, so we'll learn how it's used to serialize interesting information, and how to use the jq to parse it at the command-line. jq is a command-line tool for parsing JSON. JSON is a lightweight format that is nearly ubiquitous for data-exchange.
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