8/12/2016 · Given the following input data, I needed to extract the key and the value of , returning it as a key /value object The first thing to do was to step in to the… Extract keys using JQ Given the following input data, I needed to extract the key and the value of foo , returning it as a key /value object, To get the top-level keys as a stream, you can use the built-in function keys[]. So one solution to your particular problem would be: jq -r ‘keys[] as $k | ($k), (.[$k] | .ip)’ keys produces the key names in sorted order; if you want them in the original order, use keys_unsorted. Another alternative, which produces keys in the original order, is:, 2/14/2020 · jq .[0] | length strikes.json. The keys Function. You can use the keys function to find out about the JSON you’ve got to work with. It can tell you what the names of the keys are, and how many objects there are in an array. To find the keys in the people object in the “astro.json” file, we type this command: jq .people.[0] | keys astro.json, 10/31/2013 · some. key : 3}, {some. key : 4}]} I’d like to be able to do this./ jq .results.some. key input. But I can’t. I can’t figure out how to access those keys , is.
Parsing JSON with jq – compciv, How to Parse JSON Files on the Linux Command Line with jq, jq Manual (development version) – GitHub Pages, how to fetch array keys with jQuery? – Stack Overflow, {user:stedolan, title: JQ Primer} {user:stedolan, title: More JQ} Putting parentheses around the key means it will be evaluated as an expression. With the same input as above, {(.user): .titles} produces {stedolan: [JQ Primer, More JQ]} Variable references as.
To access a nested attribute, for example, the first part of the name object, simply list the attributes in sequence: user@host:~$ cat ernst.json | jq ‘.name.first’ Joni user@host:~$ cat ernst.json | jq ‘.bio .birthday’ 1970-07-01 Arrays. Think of an array as a list. In JSON, square brackets are used to enclose an array of objects or values.
10/25/2012 · @akram jq .name.PS_Perm_Gen[peak-usage].init is what you’re looking for.. There are two syntaxes for element access : .foo and [foo].Note the lack of leading dot in the second case. The second syntax allows for extraneous characters, the first one does not.
Books. Learning jQuery Fourth Edition Karl Swedberg and Jonathan Chaffer jQuery in Action Bear Bibeault, Yehuda Katz, and Aurelio De Rosa jQuery Succinctly Cody Lindley
