Jq top level keys. add values to array of keys with JQ.

Jq top level keys fields values are greater or equal to the . In that case, use this: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Using --arg prevents your data from being incorrectly parsed as syntax. keys. I like using functions here because you can easily replace these with whatever logic Modify the filter to update the data key of the top-level object: . How can I achieve it with jq? json; jq; Share. a-b jq: If you are going to invoke jq using -f template. Modified 3 years, 8 months ago. tag = input)' intents7. , (0):1} jq: error: Cannot use number (0) as object key at <top-level>, line 1: # # Field access, piping #. select distinct foo(j) To return ['a', 'b', 'c', 'd'] (note that in this instance I'm not too concerned with the nested keys) Presto documentation doesn't have any function that explicitly fits the bill. ["KEYNAME"]' Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site How to print top level fields and inner array fields together using jq? Ask Question Asked 4 years, 7 months ago. 114k 20 20 gold jq: select top two level of the object. json | jq 'map(. jq: how to add an object, key/value in a nested json tree with arrays. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company It might be cleaner to put the jq all on one line, but the key point is that if you try to escape the newline inside single quotes, you end up with a literal backslash in the jq command that does not belong there. What worked for me was: jq '. When giving Oct 5, 2022 · From there, you can choose to get the top-level key: The keys function creates an array of all keys in the input object, and the [] at the end expands the array into a set of strings. With JQ, you can query Jul 29, 2020 · This method may not be ideal because it relies on whitespace which could change between versions of jq, but it is a powerful method in the sense that it could be applied to similar situations with other tools. maxHeight)' new. name" file. Viewed 687 times 0 . This is a little more verbose then peak's approach. Tags[]. I'm leaving it in as a sort of comment. com is intended as a fixed string. jq as it is, then it will be hard slogging, though there are alternatives besides setting the $-variables on the command line. value == "auto"))[]. Using a bash script, I need to add a top level property "collection" like this, which still contains the same nested items within it. Reservations[]. json. only at the top level. Or the number of top level keys. echo Nov 13, 2024 · Note: jq allows user-defined functions, but every jq program must have a top-level expression. Improve this question. In your example, there's a StackEvents array with five elements. If you do not want to loose the top level keys and you still want to keep jmespath as part of the equation, the following example meets those requirements but needs some more Finally, we can zip this up so that it becomes a key/value object like we started with. Is there a way to do this? I could Important: Level up your jq skills with this accompanying FREE practical project on DataWars — enhance your skills through real-world challenges! Enumerating by Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company @orrgal1 Perhaps you did not quote the " characters in your command; if you run jq . Nov 13, 2024 · Note: jq allows user-defined functions, but every jq program must have a top-level expression. key2] | @tsv' You first convert the data to entries so you can reference them, then make a list with your values and at the end you convert it into tab-separated output with the @tsv operator. 1. | {field1, field2}' # from sub level May 11, 2024 · In this in-depth article, we covered some of the basic capabilities that jq provides for processing and manipulating JSON via the command line. You signed in with another tab or window. Using jq to fetch key-value pairs from a json file. json - where some-command is a command that generates an endless stream of random numbers, one per line (for example, shuf -i 0-100 -r or cat a. Instances[] | . Using jq and maybe Unix, I want to get the following output: c 3 a 1 Two things going - first, I am printing only two keys and values, and I am ordering in the way I want. The accepted answer also produces null for every object that doesn't have the key. Add multiple parent keys to json array. Key]|join(",")' This gives output as: vol-123,20,Name,App vol-456,22,Name,App How can the jq query be changed to get something like Im doing a bash script where I use a for loop in order to get some information using a AWS command, the output of the command is a list in Json so, i'm using jq for filtering the response. Lots of JQ questions on here, but none of them seem to address what I'm looking for. closed == false) | with_entries(if . Usually, a shell variable you're passing into jq contains literal data, so this is the correct thing. jq -r 'to_entries | . Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company You just need to use the has attribute which returns a boolean value depending on the presence of the key mentioned. I am trying to get the values of the Name tag of AWS EC2 instances using jq. First define some arrays with the data. 2020. |objects|. You can affect how jq reads and writes its input and output using some command Jan 4, 2025 · $ jq '. How to efficiently count the number of keys/properties of an object in JavaScript. This is for anything regarding the command line, in any operating system. So I wrote the following query:. The "search" key in the metadata, if present, should have a string or array value (array of strings); this is the search path to be prefixed to the top-level search path. Viewed 2k times 3 . [] | select( . How to efficiently count the number of keys/properties of besides the outer square brackets are kind of unnecessary (it just makes the whole output an array like the input is), as in @x-yuri's comment shown, the filter can be shortened to only {name}. Return top level key based on presence of key at subobject. Viewed 71 times 0 This is my json that i am trying to just jq to parse: { "aaa-bbb-ccc Using the basic form for accessing a key's value, you'd write: jq -r '. Assume that the two JSON objects are in lookup. Gets an object’s keys as an array. Improve this answer. I appreciate the time and the effort. Then when we get to the bottom level, it's just string formatting. Share. Sparse arrays are a little wonky, as you can see. The jq ‘select’ command is case-sensitive, so ‘New York’ and ‘new york’ would be considered different values. You can use jq combined with shell tools like awk or grep to preprocess the JSON and look for duplicate keys. It would be equivalent to turning an SQL table into a set of new tables, each with a key field that holds a field name from the original table, and a value field that holds the corresponding value, and then selecting across those tables. echo '{"a": 1, "b": 2}' | jq 'length' # 2 flatten. Using `jq` to add key/value to a json file using another json file as a source. I get "jq: error: IN/1 is not defined at <top-level>, line 1" when running your suggestion. The has() method handles the presence of a particular key. After jq does a pretty print, it will prepend whitespace to elements which are further down the json tree. json returns: Saved searches Use saved searches to filter your results more quickly Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company How can I achieve this with jq? json; jq; Share. If you use jq '. include RelativePathString [<metadata>]; This solution will work for the top-level object (assuming a sufficiently recent version of jq), but it will add an "id" key if there is none, which may not be desired. abc-def. json # used with pipes $ cat file. parent_count >= (. coreTransactionData. Aug 5, 2020 · keys. name, . Provide details and share your research! But avoid . The |= operator pipes the left-hand side through the right-hand side, updating the original input in the process. In this case, you can simply apply the wildcard jmespath expression (i. key, . Viewed 205 times 0 As documented in many places, you can always use the fundamental method for accessing the value of a key: . May 11, 2021 · jq -r 'del(. Note that I took the liberty of adding another entry for testing what happens when there isn't a matching DegreesIndex or SchoolIndex for the given Fan. json | sort | uniq -d This extracts all top-level keys, sorts them, and finds duplicates. -- Clarification: Capturing a value in a select and using it in an object at the top level with jq. This is my desired result: { "collection": { "item": How do I add parent keys in jq. []. Instead, the filter is run once using null as the input. updateDate is null (or false), skip it entirely. jq 'has("sys/")' Note that you can customize jq to return a bool string or even null, but none of them can't be directly used in a shell conditional which only uses exit codes 0 or 1. json the following worked for a value that I did not have to recursively look for, i. jq, then each of the $-variables in template. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Unfortunately, since you haven't given us many clues, it's not completely clear what specifically needs to be changed, but a reasonable guess is that word-is-here. It is not possible with jmespath (i. aws ec2 describe-instances | jq -r '. [] | {name, group}' (in this case i'm just keeping the filter before the Using jq, I want to get a list of application names, all versions and server name. [] | select(. g. Ask Question Asked 6 years ago. Sep 20, 2017 · 一、jq 简介 JSON 是一种轻量级且与语言无关的数据存储格式，易于与大多数编程语言集成，也易于理解 。虽然它以 JavaScript 开头，而且主要用于在服务器和浏览器之间交换数据，但现在正在用于许多领域，包括嵌入式系统。JSON是前端编程经常用的格式，对于PHP或Python，解析JSON很容 Nov 17, 2024 · You would not use tr to remove the double quotes, you would use jq with its -r option. [] | {name, group}' (in this case i'm just keeping the filter before the How can I achieve this with jq? json; jq; Share. Here is how I would approach this. jq get x levels of keys and remove all the rest. fields | add ))) | keys[]' file This deletes all sections where the sum of the . It seems to me that jq is the tool you want to use here. Here is a sample of my json file: { &quot;data&quot;: { I am trying to get the values of the Name tag of AWS EC2 instances using jq. You signed out in another tab or window. Additionally, I'm sure that my attempt is overly complicated and there exists a more elegant solution. json| jq '. This is useful when using jq as a simple calculator or Sep 29, 2024 · JQ is a lightweight and flexible command-line JSON processor. id+" "+tostring(. Thx for any help, The problem doesn't discuss what should be done if there are no activities or if there is more than one activity so the following filter encapsulates the property change to a function: Filtering Arrays. So I'm trying to get the top-level keys and then multiply each one by the amount under each key then post the key as many times as the amount states. I want add nested object with name of top-level key. direct child of the root) of the json object in its own line? More generally, is there a way to expand the json object up to level k, so that each level k child is printed in one line that contains its descendants (with levels greater than k). How do I add parent keys in jq. I am new to jq and I'm trying to use it to search for a value in a json file based on a key that is located deep in the json structure. a. If you want it to be another format, you can read more about it in the jq manual. I'm trying to print only certain values from a json (one line per sub-object) repeating one value from the top object on each line. I have this JSON file: Link: add nested object with name of top-level key. Modified 4 years, 6 months ago. That way you get the properly decoded string from jq (which would make a difference, for example, to the cert string in the question, which contains an encoded newline). This key is at the same level as app_1 0. name == "foo" ) The problem is that since there is two sub-objects with foo as name, the top level object is returned twice. name' file. name, let’s say foo. How to add a field to a JSON object with the jq command? 5. Reload to refresh your session. Ask Question Asked 4 years, 6 months ago. Describe the bug when keys contain - (hyphen) in the name ,jq can not deal with this situations. Viewed 205 times 0 . jq - Get a higher level key after a selection. The difference is that for the function, the input has already been parsed (and duplicate keys collapsed), whereas using the flag would start streaming while reading the input, thus before Regarding the key "apple-cider" -- since it has a special character ("-"), you cannot use the abbreviated syntax. productId == null)' file. Condense a nested array into one. include RelativePathString [<metadata>]; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company jq having issues escaping hypens in top level key. Viewed 546 times jq: select top two level of the object. The select() function is used to filter JSON data based on a specified condition or criteria. updateDate//empty part means: if . @GillesQuénot It's more "meta" than that. Similar idea as in another answer but acting on the original JSON document without transforming the name keys' values into keys: $ jq -r 'map( select(. Key == "Name"))' | jq -r '[. ' data. Id) \(. The metadata is also made available to users via the modulemeta builtin. To do this, we need to wrap our return data with square brackets so that it becomes a list again: Assuming you want to add a new key, tag, to each of the elements of the top-level intents array with a random number as value, then you may do this like so: some-command | jq -n 'input | . It's a bit unclear what you want to do. Command-line JSON processor. JQ - non-recursive merge of top-level keys and values only. I something like. [KEY] where KEY is a JSON string, including the outer quotation marks. Get multiple sub-keys in an object along with values. data,. [] notation is used to iterate over the elements of an array in a JSON document. *) to your object. This of course wouldn't work if you expect your key to have values of false or null. [] | keys[] For example, with the input as shown in the question: $ jq '. [] | select (. a-b' jq: error: b/0 is not defined at <top-level>, line 1: . If you want the result of the jq to be used in a shell conditional statement, With that change, your jq command returns "Cannot iterate over null (null)". e'). json "identifier1" "identifier2" To retrieve the key names in the order they I am trying to merge two json files using command "jq -s . Note too that your answer seems to be identical to the older answer from steeldriver, and that you're using May 13, 2020 · I am trying to merge two json files using command "jq -s . The bare problem first. I am pretty new to JQ so sorry if it seems obvious. 3. I have a solution but I think that it isn't el How can I get all distinct (top-level) key names from Presto? I. com, since jq is interpreting the dash ("-") as an operation ("minus"). The search key in the metadata, if present, should have a string or array value (array of strings); this is the search path to be prefixed to the top-level search path. Ask Question Asked 1 year, 5 months ago. I have a YAML file like this I'm trying with a combination of kislyuk/yq and jq with the map / key / contains----- Test with paths command. jq to replace array key values from file. jq: Testing if a key is in a list of predefined keys. Thanks for responding. To Reproduce root@os-001: echo '{"a-b":123}' | jq '. Then, join its elements with spaces. Modified 6 years, 10 months ago. file 1: { "node1": Using add will concatenate the top-level keys in the list that is slurped in from the files, creating a merged object of those keys. jq reads input automatically by default, but I did not want that to happen as I needed to perform some manipulation on the whole input, so I needed to run jq -n which sends null as the first input. end) | . Aug 22, 2017 · Is it currently possible to have the CLI only list the top level keys? For example, given the following yaml file: Jan 4, 2025 · Get multiple sub-keys $ jq ". Improve #!/usr/bin/env bash # json normalizer function # Recursively sort an entire json file, keys and arrays # jq --sort-keys is top level only # Alphabetize a json file's dict's such that they are always in the same order # Makes json diff'able and should be run on any json data that's in source control to prevent excessive diffs from dict reordering. Also, is the data (the two keys and the value) always static, or is it provided via shell variables? @Jenifer the jq man page doesn't say what kind of sorting the -S option does but it does mention that jq keys sorts the #!/usr/bin/env bash # json normalizer function # Recursively sort an entire json file, keys and arrays # jq --sort-keys is top level only # Alphabetize a json file's dict's such that they are always in the same order # Makes json diff'able and should be run on any json data that's in source control to prevent excessive diffs from dict reordering. This allowed me to run jq -n "inputs" to output my JSON input. Modified 6 years ago. It then pulls out the name and type values from the I would like to use jq to "abbreviate" values longer than n characters. Nodes are separated by . Also, I did not care if a blank/null value was there: jq "if . Related. SubnetId)"' Anyone know how I can also display one of the tags by key name, let's say I also want the Status tag displayed on the same line as the Id and SubnetId. How to use result from a query as attribute to select from input? 2. 0. Also, the version of jq I have does not understand "IN", probably compiled without it . tl;dr Return top-level keys from multiple json files in present working directory change a key name; be able to select specific keys to return, I don't need them all; be able to select and parse values; turn parsed values in to key value pairs and add them back in to the json; Change a key name jq '. Use of PUT vs PATCH methods in REST API real life scenarios. name at the end, expand the top-level object into a set of sub-objects and then extract the . json_query) alone unless you are ready to loose the top level key. Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site An obvious solution is jq, but I'm not very familiar with it yet. Tags[] | select (. file1 file2". data |= map(). Top loading an Aircraft vs bottom Loading Contribute to jqlang/jq development by creating an account on GitHub. 952. Think of it as sed for JSON data. It allows you to slice, filter, map, and transform structured data with ease. What I want is to get all the top level objects for a certain code. list1[] ] | join(" ")' file val1 val2 val3 val4 val5 val6 Create a new array with all the elements of each list1 array from each top-level key. In your case, this does not look like a very happy option. Subnets[] | "\(. domain. keys gives you the fieldnames as an array; keys[] streams the contents of this array (as with [] before). We can use this to iterate over the keys at each level, capture the key using as for later use, and then put the value in . Follow If you only want to remove the "store" key when it occurs at the second level, then consider: map_values( del(. 2, app_2 1. add values to array of keys with JQ. The list should only contain "Request Output" data. notice how multiple top-level keys were used with the comma operator; Filter records that have null at a value $ jq '. foo $ jq -r '[ . type )[]' file type1 string type2 string type4 string This extracts all the entries in the top-level array whose name values are not the string null. "abc-def" in your shell, the quotes are interpreted by the shell and removed, so you effectively just run jq . maxHeight from the input (it doesn't even complain if it didn't exist before): jq 'del(. userinfo | to_entries[] | [. I know how to print keys and values, and even only some, but I can't seem to order them in the way I want (not alphabetical or algorithmic sort). Because jq only has one stream argument, and we need both the object we are addressing and the key/fieldname, we need to store one of them in a variable. The . Aug 18, 2021 · In order to build my schema I needed to know that the keys name and hello existed in the documents. Each value should be converted to a string s, The idea is to have something like "folding" when looking at complex objects, so that I can get an overview of what top level keys are there, and then decide which key I want to "zoom in" to (eg jq '. We will get the object of services in the first part then we pass it to keys which will return a list of keys based on a given object Using the basic form for accessing a key's value, you'd write: jq -r '. 0. There's no real good equivalent to SQL, unless you start poking around in internal tables Here are some alternative solutions for detecting duplicate keys: 1. To get the keys you can do the following when using Python yq:. json and Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. for further iteration. – Ege. The task: insert array from one JSON object ("lookup") into another ("target") only if the key of the "lookup" matches a particular "higher-level" value in the "target". I can extract multiple keys at the "top level" like so: cat subnets. Running without specifying a node will give a list of the top level keys. key1, . key' file. key == "id" then . In this case, your variable contains syntax, not literal data: The . In older versions of jq, however, you might have to pipeline this form: The problem (or at least the obvious problem) here is evidently the string: word-is-here. Key == "Name")' But I am getting this error: jq: error: Name/0 is not defined at <top-level>, line 1: . You can use jq's stream representation, which can be called either via the --stream flag or via the tostream function. parent_count value. However, there are a few potential pitfalls to be aware of. You must quote it if it contains special characters such as % : jq '. jq will have to be set separately on the command-line, one by one. Can anyone provide me with the correct command? json; jq; Share. json | jq Multiple fields: # from top level $ cat file. e. Key == Name) jq: 1 compile error key; jq; depth; Share. Commented Dec Given an input json string of keys from an array, return an object with only the entries that had keys in the original object and in the input array. system. Gets the length of the array/ echo '[0, 1, 1, 2, 3, 5, 8]' | jq 'length' # 7. Follow edited Jun To return the key (fieldname), you have to use that in the lookup. Ask Question Asked 3 years, 8 months ago. c' # pretty print $ cat file. Tags[]; . pull out just the top level key: $ jqg -t unflatten -v service-h /tmp/example. key = "trello_id" else . name' file package_2 Using []. Whichever version of jq you have, you can use the unabbreviated form: . If you are stuck with template. Either one should be run with jq -r so that the output strings don't get re-encoded as JSON. I have a I'm trying with a combination of kislyuk/yq and jq with the map / key / contains----- Here are some alternative solutions for detecting duplicate keys: 1. [] | keys[]' input. How do I look for a key with a particular value? add nested object with name of top-level key. JSON keys are always strings, but jq sometimes allows to use them without string (if they would be a valid "identifier"). 1294. peak. When giving the node the next level of keys or values will be returned. Using jq with Line Splitting. It is a powerful tool for extracting specific elements from a JSON document that meet certain The problem doesn't discuss what should be done if there are no activities or if there is more than one activity so the following filter encapsulates the property change to a function: Filtering Arrays. The list should not contain information about the latest version. So it is not actually apart of your yaml (not a property) which means you cannot do services. name key's value from each. This is useful when using jq as a simple calculator or Oct 5, 2022 · Once I spotted that you only wanted the top-level key, I had already written the text below. The list should not contain the "latest_version" key. Follow Note that if two or more objects share the same key and if that key refers to a scalar or array, then the later objects in the input will overwrite the value. You switched accounts on another tab or window. – R J. At this time jq only uses the search key/value of the metadata. Contribute to jqlang/jq development by creating an Cannot use number (0) as object key at <top-level>, line 1: %%FAIL {non_const:. Using jq-1. 1 etc. updateDate//empty' The . if you want to keep more than one key/value combination, you can make it a list in the curly braces like jq '. Nov 19, 2024 · Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site jq [filename] [optional node] Running without specifying a node will give a list of the top level keys. I'm looking for a solution which covers an arbitrary number of environment_* (top-level keys beginning with environment_ and not only a single one). maxHeight Modify the filter to update the data key of the top-level object: . include RelativePathString [<metadata>]; Is there a way to do this with an json parsers like jq. I’d like to have it only once, is that possible? If the top-level object had been an array, then it would be easy to insert elements before the last element in the array. You say you want to extract certain keys and values, but you don't really give any criteria for what keys you want. Modified 1 year, 5 months ago. "abc-def"' or jq . keys is a built-in function in jq when given an object, returns its keys in an array. However, the top-level JSON is an object with arbitrary nesting contained within, including more simple values, How to use jq to find all paths to a certain key; Recursive search values by key; json; object; select; nested; jq; Share. $ jq -r 'map_values(select(. jq '{program,message}' - note lack of dot. . intents |= map(. ["apple-cider"] ; you might also be able to use the form: How do I add parent keys in jq. It allows you to access each element of an array and perform operations on Return top level key based on presence of key at subobject. Follow edited Mar 5, 2023 at 19:05. 4. value. Ask Question Asked 6 years, 10 months ago. Asking for help, clarification, or responding to other answers. It allows you to access each element of an array and perform operations on them. code[]. Modified 4 years, 7 (any(. how to extract specific keys from json. Additionally, if the JSON data you’re filtering The most robust alternative is to use the basic form:. But I want these file's content to be comma separated, neither it should start with []. ["KEY"] There are alternatives depending on your version of jq, but the fundamental method is supported by all versions. Key == Name) jq: 1 compile error Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. b[0]. VolumeId,. May 28, 2023 · Note: jq allows user-defined functions, but every jq program must have a top-level expression. The transformation rewrites the value of each top-level key to be the value of the English (or German) string instead of an object of key-value pairs. cards[] | select(. With the unflattened JSON, though, you can dump that back into jq to manipulate it as you like, e. All questions (including dumb ones), tips, and links to interesting programs/console applications you've found or made yourself are welcome. "%cpu"' test. store) ) Postscript. As I'm Note that if the original JSON object already has a key named "fruit2", then the usual "last-most wins" rule applies, where in this case, "last-most" refers to the array of key-value pairs that is used to determine the final result (as per the def of with_entries). name != "null") | . – peak Commented Feb 28, 2018 at 20:17 You can use following command to do it: jq -r '. 40. I would like to take two JSON objects and merge them non-recursively. time))' It gives the error: jq: error: tostring/1 is not defined at <top-level>, line 1: If I omit the tostring, then the problem is of course that time is not a string but a number. Sample input: [ { "name": "level1Name", "lv Skip to main content Today we will be using jq to work with JSON data, you should be able to get it here. This would give you the values in the order they occur in the input file. Saved searches Use saved searches to filter your results more quickly besides the outer square brackets are kind of unnecessary (it just makes the whole output an array like the input is), as in @x-yuri's comment shown, the filter can be shortened to only {name}. Each element is an I'm trying to improve a bash script I wrote using jq (Python version), but can't quite get the conditional nature of the task at hand to work. echo '{ "a": 1, "b": 2 }' | jq 'keys' # [a, b] length. maxHeight then . ["KEYNAME"]' except that at a Windows prompt, you'd have to fiddle with the quotation marks (or put the filter in a file). You can affect how jq reads and writes its input and output using some command-line options:--null-input / -n: Don't read any input at all. 2. 6, this deletes the key . \"abc-def\", the " characters are quoted and jq actually receives them. Size,. json | jq -r '. Note that if two or more objects share the same key and if that key refers to a scalar or array, then the later objects in the input will overwrite the value. The original tag for this question was jq so here is a jq solution:. Follow Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company The edits I've made to the question are intended to be an example of how similar questions should be asked in the future: There's an English-language description of what you're trying to do; code that can be copied-and-pasted to reproduce the problem; the input data (or a subset sufficient to allow folks to test the problem) is present in the question itself (so the question and At this time jq only uses the search key/value of the metadata. Output values in multiple lines with same key in JQ. First, we looked at some of the essential filters jq offers and how they can be Aug 18, 2021 · After that it was a case of building up my jq expression as needed: jq -n "inputs[]" to read all JSON objects and unwrap the outer array; jq -n "inputs[] | keys[]" to fetch the keys Sep 20, 2017 · jq 是一款命令行下处理 JSON 数据的工具，其可以接受标准输入，命令管道或者文件中的 JSON 数据，经过一系列的 过滤器 (filters) 和表达式的转后形成我们需要的数据结构并 jq is a small command line utility to help with getting values from a json file for scripts and other purposes. json | jq '. isn't part of the string you want to do a lookup by, but is instead an instruction to jq to do two separate lookups one after the other. | keys[]' black_services Is there a way to use jq to print each level-one field (i. It then extracts the top-level key names of all sections that are left. json At this time jq only uses the "search" key/value of the metadata. bxicn alkqbx fmvirw kmly pddfd irizk habep yqdui zscm ezepn