Jq update json file. I cannot get jq to give me the value I'm looking for.

Jq update json file Hot Network Questions FYI, it's more efficient to avoid cat in favor of passing the input file name straight to jq or using <myjson. config }} platform: ${{ steps. Often recorded (and cleaned up) from actual discussions where I'm involved in helping others with technical problems. type=="1") | {fname:. json in the structure of: { "connections": {} } I want to update the connections object with variables $1 and $2. Not precisely an answer to the long version of the question, but for people who Googled this looking for other single line output formats from jq: Now available on Stack Overflow for Teams! AI features where you work: search, IDE, and chat. It might be an intentional design decision; according to the UNIX philosophy that "everything is a file," it might be simpler to The above is on a file. ' file Share. json creates an array with each element being one of the JSON files. Hot Network Questions Trying to find a French film I watched 5-10 years ago on Netflix How defensible is I am trying to use bash to create a string variable that will be used in jq to add new elements to the json file. json and 2. Learn more Explore Teams How to ‘Pretty Print’ JSON Files. For –argjson is a jq flag that passes a JSON object as a variable to jq filter, thereby allowing us to use variables in jq queries when working with JSON data. json | jq (without the filter . yaml data1: subkey1: subvalue1 subkey2: subvalue2 data2: value2 data3: subkey3: How to add a key value pair into a JSON file with JQ? 1. jq-update a value of a json adding a prefix. name) |= "XXXX"' This does the same assignment to You need to specify the jq program to run: jq . In this in-depth article, we covered some of the basic capabilities that jq provides for processing and manipulating JSON via the command line. Jq how update an object in json. Append JSON Objects using jq. This is what i tried. I want to add/update status field in each mappings in a. json does not have but en. json file) into an array, flattening it, and then getting the length. . Add a new key/value to every object in json array in file with jq. None of the other answers did that for me, so I created my own: function! FormatJson() python << EOF import vim import json try: buf = vim. Whether you’re managing simple changes or complex updates, this process can streamline your workflow and reduce manual intervention. Ask Question Asked 5 years ago. bulk update local json file with jq. Using jq, how can I take a json object from a file (input_02. Manipulating a JSON file with jq. This operation takes a JSON file and formats it into easy-to-read output, with proper line spacing, standard indentation, and perfectly aligned braces. What you could do if you don't want to run jq on test. type=="3") | {city:. For example I want to update the memory attribute in a task_definition. My json file is like this: { &quot;kind&quot;: &quot;KubeletConfiguration&quot;, &quot;apiVersion&quot I have a need to merge two YAML files with YQ/JQ update only on the map file. To prettify a JSON file, use the jq '. In this 4 parts post series, you’ll discover why and how I use JQ with OpenAPI Specification files. (3) To produce the output you want, you could run: jobs: configure: runs-on: ubuntu-latest # at first we still don't know which self-hosted server, so we just use ubuntu latest and read the JSON file outputs: # here we use the outputs from steps, and set outputs for the job `configure` config: ${{ steps. json and employee2. However, I'm noticing that you (for whatever reason) expect the key Update JSON file via Terminal or bash script June 15, 2022 When working with JSON files in a Linux environment, there are many times you need to automate updates to these files. jq '(. Because if I do so wherever I am going to use this code( say I build a npm package of it and #!/bin/bash JQ=/usr/local/bin/jq BN=$(basename $0) function help { cat <<EOF Syntax: $0 file1 file2 The two files are assumed each to contain one JSON entity. json file, the whole command line is wrapped in parentheses in order to run it in a subshell, so the deleted file is closed and the standard input is restored at the end. This solution can easily be modified to match the other obvious interpretation. I would like the output to be comma delimited or at least very easy to cut and sort Do a relational JOIN operation between the two files based on the . And it doesn't matter whether you have to work with well-engineered, elegant JSON, or Using below command it is creating multiple json file for each value update. json && mv tmp. Resources. Here’s a simple –argjson syntax: $ jq --argjson [variable_name] "{ }" 'jq_filter' [json_file] Let’s break this down: I'm trying to read some JSON data from file and then, via a series of prompts in a shell script, update that JSON over time to eventually write it back to disk later. I am expe I have two json file, one contains a map key name and a type, the other is a flat json file. txt If the left I created a shell script to create and update json files using jq. – Luis Lopez. json; the jq invocation would look like this: jq -f merge. OUTPUT: $ jq jq - commandline JSON processor [version 1. yaml data1: subkey1: subvalue1 subkey2: subvalue2 data2: 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 JSON file update using jq (bash script) 2. For example, to pretty-print JSON data from a file: jq . using jq to update a json value Updating a json file using jq while keep the exact same input (except changed value) 0. We will be working with multiple JSON files and reading input from an input. You can test it simply with jq on the command line. json That said, to recursively merge your two files, jq_rkm. roles[0]. json; but also cat file. The contents in a. json is still having old values. Is it possible to include current time stamp in jq command? 1. 6] Usage: jq [options] <jq filter> [file] jq [options] --args <jq filter> [strings] jq [options] --jsonargs <jq filter> [JSON_TEXTS] jq is a tool for processing JSON inputs, applying the Thanks to @peak for his answer! Just want to add, Creating a blank json file: echo "{}" > config. JSON file update using jq (bash script) Hot Network Questions A word like "science/scientific" that can be used for ALL academic fields? Your problem is not (only) with jq, but with shell syntax. Ever wanted to quickly find, extract or modify data coming from some JSON documents on the command line? JQ is the tool you’re looking for. replace string with jq. How can I use JQ to change a value in a nested array? 0. name" To keep things simple, since you indicated the intent is that json-data. Add new key to JSON file, with value equal to the length of other key's value. It's written in portable C and has zero runtime dependencies, allowing you to Need some help for change the value in JSON file using jq command. we need to Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about The pipeline then passes them to a second jq invocation that inserts them as an array under the correct section under the body key. To create json files is working well. But it's escaping my double quote. 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 Once JQ is installed, you can start using it to process JSON data. ' *. 2nd step: check where exactly you want to change. We need to generate the name car0X_hyb. Note you can write it in a slightly more compact way: ( rm file. json > 74687. The filter creates temporary objects to facilitate looking up values by [ID,time_CET], updates any values in the aaa. jq update boolean value in json file. json I can't get any . For example, we can I need simple iterate this json, to get attributes repositoryName and execute git clone for each repository. city = "tehran"' 74687. Sadly jo is not available for Amazon Linux. , which returns the input data unchanged but pretty printed. If the file is not already suitably formatted, then if it is acceptable to use jq on the whole file just once, then you might consider using jq . It is like sed for JSON data update JSON file using terminal. The jq utility works by applying filters on a stream of json data. json 4. If they don't match, I want to update the json file with the new manually entered value: - name: Set age if dispatching shell: bash -l {0} if: github. valid JSON file. 3. All examples print to the screen (you don't want to corrupt your input data while you're adapting the filter for your case. I need only one JQ command to update all the values in Json file and output should be redirect to jq is a lightweight and flexible command-line JSON processor akin to sed, awk, grep, and friends for JSON data. e. I am trying to update a boolean value in a json file using jq. json We want Lastly, you can give jq the file to process as a parameter. [] fetches repositories array. jq -c '(select(. ' employee1. Commented Jul 3, 2020 at 21:05. * input' file1. Commented Dec 1, 2017 at 7:33. json: Before we proceed with the jq command, note that we’re using two simple JSON files: employee1. For example, if With jq, we can easily parse JSON in the Bash shell, or even convert XML to JSON. Linked. That answer adds the key to the end of the list of keys in the compilerOptions object. Now, we can proceed to merge these two files using the jq command and understand the final output produced: $ jq -s '. Exploring Related CEO Update: Building trust in AI is key to a thriving knowledge ecosystem How to improve the developer experience in today’s ecommerce world Featured on Meta To format in a deterministic way, we need to sort the hash. com", Where is jq? jq is available on most Linux and even macOS systems. Update JSON file via Terminal or bash script June 15, 2022 When working with JSON files in a Linux environment, there are many times you need to automate updates to these files. jq - merge only single key from second JSON file into main JSON file. August 5, 2016; Updated September 19, 2024 jq - JSON formatting tool. json Parsing JSON Data. 1. Finally, jq's --join-output (or -j) flag decodes the JSON-encoded NUL character while suppressing the otherwise appended newline characters after each item. 4. If the key needs to be base64 encoded, update with the value ($newkey|@base64) in place of just $newkey in the jq expression. But if all you are trying to do is to update the value of key D whether it exists or not, then you don't need any checks and jobs: configure: runs-on: ubuntu-latest # at first we still don't know which self-hosted server, so we just use ubuntu latest and read the JSON file outputs: # here we use the I have a need to merge two YAML files with YQ/JQ update only on the map file. Tutorial How to manipulate JSON using jq May 12, 2020 by Bhavin Gandhi JavaScript Object Notation, often referred as JSON is a data representation format which is human readable and easy to parse for machines. json jq -h. jq add file contents into json and update. json does over the fr. group[]. id) \(. Updates to the 2024 Q4 Community Asks Sprint. – bryan Consider a scenario where you need to update a specific value in a JSON object: jq '. The following is a variant of @oguzismail's answer. after loading your file you can use jq '. [] will throw away the keys of the object and I am attempting to use jq to parse a AWS CloudFront configuration JSON file and change a few values so that I can then issue an update statement with that configuration. Value = "xxx"' scanprofile. Name == "api-key") | . Hot Network Questions Alternatively, if the file always has this structure, and it's those particular "name" fields you want to change, not just any old name, you can also just list them out and assign to them as a group as well:. > jq_rkm. 3rd step: you already have new content for your file you have to In a nutshell: map_values is your friend. this works great: jq '. It has + The requirements are not completely clear, but here's the solution to one interpretation. json), and that the following lines are in process. exe test. $ssid Once the text file is cleaned up, you can use jq to convert it into a JSON object. First, we looked at some of the Here's one way to create a JSON list from an array of hosts: values="$values,\"$host\"" This assumes that there is at least one host. It's extremely powerful at filtering JSON, but, at its most basic, also an awesome way to pretty print JSON for viewing. txt")) ]) as [$title, $file] ($base; (. 5 jq can only write to the standard output and print debug messages to stderr. Stack Exchange Network. jq: Conditionally update/replace/add json elements using an input file. json and b. Parsing JSON data with JQ is straightforward. an object originating from file Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about How to add a key value pair into a JSON file with JQ? 1. age != env. Modified 5 years ago. It would probably be simpler also if the template were valid JSON, but in case you're stuck with templates How to add space to String in Json file using jq. Modifying a nested object with jq. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. The task of converting a file (say input. Hot Network Questions I'm trying to replace the value of a key in my original JSON with the value of an object with the corresponding key in another document. jq offers the update assignment, |=, for this. Hot Network Questions JSON file update using jq (bash script) 3. outputs. It initializes with the I'm wondering how I can add the file content into my JSON file like that using jq, if it is possible? The key to a simple jq solution here is to read the raw text file using 'jq -R -s', and I have file. The script uses jq in a loop to read and update each aaa. In this post we’re going to learn how to use it to transform the values for specific keys in a document, while leaving everything Beyond querying, jq can modify and update JSON data. Use jq on command line to update values of JSON files. Afterwards, I want to check if the variables entered manually through a workflow_dispatch run of the job match what are in the variables. json 1. If we fix that we can get to the meat of your question, which is dealing with nested JSON. I think to update the content of the json file you should have a backend like NodeJS running and use the file system "fs":-1st step: read the file and parse it. How to update the value of the item in an array if it exists in json using jq? Hot Network Questions Why does IfBlankTF give a different result than IfNoValueTF? #!/bin/bash JQ=/usr/local/bin/jq BN=$(basename $0) function help { cat <<EOF Syntax: $0 file1 file2 The two files are assumed each to contain one JSON entity. branch2 values from branch2. read-json. name key in the array of the first JSON file and the . jq update json - key being value of some key and value being value of some other key. They are both arrays of objects. I'm trying: jq --arg ssid "$1" --arg pass "$2" '. update value of a map of objects. json The issue is seems jq is returning only the part that replaced, but I need the whole file, what I am doing wrong? this is the content of file after running the command I have a input json file with an array. , stdin, files named on the command-line) as jq itself. date)"' This way the filter is independent of the dynamic numbers in the nodes (243, 244). inputs. Using -as the second input filename with the final jq Here, I’m combining the keys of the dependencies and devDependencies objects (from a package. Consider a scenario where you need to update a specific value in a JSON object: This command updates the ‘price’ field in the JSON file to jq, the command-line JSON processor, is my favourite tool for transforming JSON documents. []' don't works. bar = "new value"' file. Contents missing using jq to update a JSON file. data. 7k 4 4 gold badges 73 73 silver badges 112 112 bronze badges. Headers[] | select(. to edit a json file inplace with JQ like -i in sed I have found many solutions like. json")")" Note that this is not secure and malicious code can be jq add file contents into json and update. I'd suggest you try using jq at a command-line prompt as you have two JSON files. AGE run: echo "$( jq bulk update local json file with jq. file == $file)). It plays nice with UNIX pipes and offers extensive functionality for interrogating, manipulating and working with JSON file. jq: I am trying to replace the values of the key, "name", in the json file incrementally to the names in the array stored in another text file. json Here are some examples of using the jq command-line utility to create new JSON data from scratch or update values in an existing JSON document. json To merge two files recursively on all levels, do the same using * as operator instead: jq '. platform }} steps I am trying to use bash to create a string variable that will be used in jq to add new elements to the json file. json File Content: {} Then add properties to the file: The most basic jq operation is parsing and reading JSON data from files, APIs, stdin etc. json merges objects only at the top level (i. – chepner. json ) < file. 10. 2. We have the following file, which contains one JSON document: /tmp/foo. title = $title ) ' *. For example, we can store JSON in a variable and pipe to jq: Modify Config Files. [] | . UPDATE I'm using jq now as suggested in another answer. But I'm working inside a container and I want it to be as simple as possible so only sed is the needed solution for me. charlie delt The data is saved in to the characters. InstanceType = "This is instance value" You can take reference from Add a new element to an existing JSON array using jq I want to convert JSON string into an array in bash. I have a variable that is passed as argument to jq command #!/bin/sh If you want to update a JSON file in place (conceptually speaking), You can use sponge (from moreutils package) to edit the file directly jq -c 'del(. > file. my_file. json [ { "domain": "ca944. Follow answered Dec 12, 2017 at 14:25. Snacks (🍿) are my collection of recipes for solving problems. - apt update && apt install -y moreutils - jq '. yaml data1: subkey1: subvalue1 subkey2: subvalue2 data2: value2 data3: subkey3: The intent for the JSON data below is to update the value of the field dst with the value of src within all elements of type t, regardless of depth within the tree, while at the same time preserving the whole structure of the data. 92. How to update a subitem in a json file using jq? 1. archetype_version = "new"' | sponge file. the JSON file is: @Bear: all examples in the answer work (I've just checked again on the current jq version on my machine: jq --version-> jq-1. lab. json file. JQ - Select JSON subarray by value then update by index. Update multiple values to json file using python. Hot Network Questions Trying to find a French film I watched 5-10 years ago on Netflix How defensible is bulk update local json file with jq. json For instance, you can make use of jq with a temporary file like as shown below to get an in-place replace editing effect. home. nordvpn. I cannot get jq to give me the value I'm looking for. json with a FLAG=="?" and finally adds any values from input. The usage line produced by jq -h: Usage: jq [options] <jq filter> [file] Note that the summary produced by invoking jq with the -h option does not (currently) provide a complete listing of the options. For instance, you might need to extract specific data from a large JSON file or transform JSON data into a different format. How do I update a single value in a nested array of objects in a json document using jq? 2. json contain JSON, let's suppose that it contains valid JSON. json > tmp && mv tmp config. Other option, maybe better (but definitely NOT secure) is using eval:. json > emp_details. Error: [jenkins@devops-dev-02 New]$ jq 'map(if . The document format snippet that matters, with redacted values, is: Sure; I realize you expect your data to be in an expected format, but that's not a good reason to write code that's buggy if it isn't. (on ubuntu/linux; ymmv across platforms) – michael. ' command. pkaramol pkaramol. – chepner Commented Oct 11, 2018 at 17:11 using jq to update a json value. json use python - it's a scripting language that you can write shell scripts with: #!/usr/bin/env python3 - it has a json module with which you can load a json file into a dictionary object, manipulate it, then save it back to a file We want to edit the json file according to the following rule . If your file contains multiple lines, you might need to decide how to structure the JSON. Improve this answer. In any event, make sure your JSON really is JSON. json by retrieving the value from b. , the value of "compare_model") with the value from the "name" key? Update one JSON file values with values from another JSON using JQ (on all levels) 1. JQ(1) JQ(1) NAME jq - Command-line JSON processor SYNOPSIS jq [options] filter [files] According to the tip of the master branch your described (and my observed) behaviour is not expected Older versions of jq have the following: ( here ) I'm trying to read some JSON data from file and then, via a series of prompts in a shell script, update that JSON over time to eventually write it back to disk later. json Update a value using a variable (sets . Extracting a key from JSON file using jq. jq is a powerful command-line JSON processor that can be used to slice, filter, map, and transform file. json > output. As example, I have this JSON object: { foo: { bar: 1, baz: 2, qux: 3 } } Update field inside a nested JSON object based on key using jq. curl json output key value to variable with jq or grep. 9. input and inputs [] read from the same sources (e. jq is a fantastic command-line JSON processor. log > temp # The file 'temp' contains one entry per line Update values in one array based on another in the same JSON file. How to replace multiple values in json file using jq and returning the whole content. txt) of JSON entities to a JSON array is as simple as: $ jq -s . We can either pipe the JSON contents to the jq command or we can directly access it using the jq command. jq '. Note that if your jq is ancient, you won't be able to use $ in the formal function parameters. json file with the new flow names. name key in the second file. Then the following script will perform the specified transformation: #!/bin/bash # As far as this example is concerned, # there is no need to export any variables AWS_DEFAULT_REGION=us-east-2 AWS_ACCOUNT_ID=123456789012 jq . list. jq '. json and remove any extra keys that fr. Commented Nov 22, 2019 at 16:27 @Shawn i have corrected the JSON file – Andrew Ramnikov. – Charles Duffy Commented Feb 8, 2019 at 23:03 According to the IO section of the manual as of version 1. key1 file. I'm trying to pass a JSON path into jq as a variable to update a value. But more important, you’ll get some basic and more advanced example of how to use JQ on any JSON document to get Option 2: Full shell expansion. csv tells the command line to write jq’s output into a file named jq_rkm. "Fn::Base64" = "HHH"' my_data. how to add an object to existing json file using jq. Hot Network Questions What does “going off” mean in "Going off the age of the statues"? Automating JSON file updates with Bash and jq is a powerful technique for handling configuration files or dynamic data, it can save a lot of time and headache by doing it manually. Updating value in file of json objects in python. not recursively), and jq -s '. key value from "abc" to "123" and ContainerName key value from "def" to "456 in one command and return the whole update json. version = "new" | . Using jq I can do this by setting the value directly like so: && npx convert-action" ' package. I have After the question has taken a 180° turn: I won't change the answer, because that's not how StackOverflow works. 19. a. The whole file is way too big to be posted here. Need to update field ping_latency to 1. data[]. Here is a snippet of the JSON file to be replaced. jq is suppose to process/filter JSON inputs and producing the filter's results as JSON However, I found that after the jq process/filter, output result is no longer in JSON format any more. Let's suppose your template is in the file template. Update one JSON file values with values from another JSON using JQ. lc. split a single file to multiple files by key name. Commented Jul 3, 2020 at 19:11. Is there a way of achieving it without using some temp However, the original file i. key3)' test. json, while retaining everything already in output. The basic syntax for using JQ is: jq <filter> <json-file> You can also pipe JSON data directly into JQ from other commands or files. Updates to the 2024 Q4 Let’s first take a look at the jq command and how it works. I need to updated two values (ver &amp; date) in each array element. Visit Stack Exchange @Bear: all examples in the answer work (I've just checked again on the current jq version on my machine: jq --version-> jq-1. jq - add new field with updating whole file. Here’s a simple –argjson syntax: $ jq --argjson [variable_name] "{ }" jq add file contents into json and update. log multiple times, e. json employee2. If you want to keep your original json structure and just append the new value you could use: $ jq '. With jq . The OP may have had paths in mind rather than keys. This command updates the ‘price’ field in the JSON file [Note: this response answers the original question, with respect to the original data. How to update a subitem in a json file using jq? 6. However, this returns the file contents rather than editing the file in place. json you can read the value of key1. Need help updating time element with output from jq? 0. json prettifies the JSON from the standard input to a new file. 1 on my machine in case of different versions of invalid json return code was 5; empty json file - jq respond with 4. json > tmp && mv tmp scanprofile. module. json It's Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, My task is to update the value of the AMI key of us-east-1 in the given json file and create the updated file as new file. $ jq -r '. 5-1-a5b5cbe). row' (2) One way to use the streaming parser here would be to use it to process the output of . Is there a way of achieving it without using some temp 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 easiest way to add the key with its value has been covered in another answer. Update fields from string in JQ. RomanPerekhrest RomanPerekhrest. g. 1k 57 57 gold badges 199 199 silver badges 422 422 bronze badges. Add new key to JSON file, with value equal to the length of The safest way to create JSON on the command line is through using a tool that constructs it for you as jq does. json input. Key == "Period" then . Value = JSON file update using jq (bash script) 2. Add a comment | 1 Answer Updates to the upcoming Community Asks Sprint. I could come up with below script but need help. @chepner The goal is to add any missing keys that fr. Consider a scenario where you need to update a specific value in a JSON object: This command updates the ‘price’ field in the JSON Manipulating Configuration Files: Use jq to dynamically update configuration files in CI/CD pipelines, making it easier to manage different environments or deployment settings. name" I am attempting to use jq to parse a AWS CloudFront configuration JSON file and change a few values so that I can then issue an update statement with that configuration. Tags[11]. jq --argfile dict dictionary. Modified 1 year, 10 months ago. Output key with the value. json ' reduce (inputs | [ ltrimstr("title: "), (input_filename | rtrimstr(". json file2. The command will still fail: starting with . How do I update only this object back in the original file. Update JSON config files safely: jq ‘. json This will truly allow in line replacement; Share. These are my two files: File 1: 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 Assuming your root node name is newList as you have in the question given, to get the id and created date, you can do string interpolation with jq. json update one json At any rate, the following illustrates how one can use jq to read in one file to construct a dictionary, and to process a second file on a line-by-line basis. Hot Network Questions What was the first game with a software mod? Why did Oppenheimer's Currently, jq does not have a feature like that. json > tmp. bar = $variable' file. g, because it is a huge file, is. jq bash Adding a json field to a Using jq I want to update an integer in a JSON file from an environment variable but the attribute is being parsed as a string. json indicates that jq should read JSON from the file jq_rkm. symbol is known as the identity command I need to change values of JSON file using sed, I saw a lot of people suggesting using jq, python, or Perl. Personally, I find it hard to comprehend huge JSON files. using jq to update a json value. Normally, the ordering of the keys does not matter, and if you need things ordered in a particular way, you will use an array. cat <<< " $ –argjson is a jq flag that passes a JSON object as a variable to jq filter, thereby allowing us to use variables in jq queries when working with JSON data. json | sponge. jq is a cli tool what seems to be preinstalled at the pipeline agent (i used ubuntu image). json rhel6. [""][] | select(. json | jq or $ jq '. How to keep one specific key from a nested json object? 0. names in it, and leave the rest as it is. I am expe 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 As for the jq filter, opening a new context (with |) after the iteration ensures it's printed with every array item. The . 99' input. However, what I want to is only update a particular object such as ". jq input. How to update a subitem in a json file using jq? 0. Now value1 is stored in the pipeline variable varName and you can access it in the whole job like this: In a JSON array, I want to select an array element on basis of a node's value, then update a different node in the same array element. Commented Nov 25, 2019 at 9:42. Iterating through and updating JSON files in Python. nodes[]. $ cat example. json | sponge file. This will update the data. modify json with jq. event. 7. In this blog post, I will be talking about the tool called jq. json; jq . Hot Network Questions To which extent I should let my PI know that I am not feeling very well with my PhD study Is 'I screamed that she get out of there' the correct way to report 'Get out of there, I screamed' Why does differentiation with respect to time commute with Is a really easy tool to create JSON files, less overhead than jq. Let's suppose we have partitioned the JSON into two files (users. Change I have a large JSON file which is an array of many objects which I want to submit to an API that accepts bulk data uploads. I have a need to merge two YAML files with YQ/JQ update only on the map file. 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 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 In this post we'll learn how to change the values of specific keys in a JSON document using the jq command-line JSON processor. Sample input : This is the exact case that the input function is for:. Follow along with a sample file about ocean animals and apply filters, Beyond querying, jq can modify and update JSON data. jq -r I am asking to update a particular key of JSON not writing in whole file again. json. api-producing-json | jq --raw-output '. – Vasiliy Toporov. JQ takes away the pains of handling this manually in the shell. jq bash Adding a json field to a json file. port = 8080‘ config. ' example. This script reports whether the two entities are equivalent in the sense that their normalized values are equal, where normalization of all component arrays is achieved by recursively I need to change the value of a set of keys (defined in a variable) in a JSON object using jq. JSON and jq updating multiple values. json and messages. []. Linux Update JSON with Array. to Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. ) also works. json when i run this command it just gets me parameter array changed as mentioned on the command but i would also need the remaining json file I would like to print each path and value of a json file with included key values line by line. city})' test. Add more field to json file using JQ. For elements that happens to JSON doesn't use single quotes. 6 rhel7 The first . contact[]. foo. json_label="json_value"' file. A commonly-used jq command is the “prettify” function. It’s a CLI tool to parse and Whether you’re working on data analysis, automation scripts, or web development, jq can help you manipulate and process JSON data efficiently. As a first thing, we will use the most simple filter, . Stream 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 bulk update local json file with jq. + input' file1. json its an array. Commented Oct 14 at 9:22 Updates to the 2024 Q4 Community Asks Sprint. txt file. data, but the combination of the two steps will probably be slower than the vanilla approach. Update field inside a nested JSON object based on key using jq. racks[]. json from 2. json), and append it to output. price = 29. current. name' test. com - under mazda string ( while X is the ID number ). json This will update the file with all previous fields/objects if any: In this article, we will discuss how to update JSON files using text files and Windows Batch. That is, jq reads an object/value in from the file and executes the pipeline on it, and anywhere input appears the next input is I recently needed to set a value in a JSON file. fname}), (select(. I've come to the following whe If the file is already regularly formatted, then you might want to consider using text-wrangling tools to convert the file into a stream of small objects, which could then be processed using jq. json file is a JSON object and inside b. A great tool for anything to do with JSON is . Basically just updating the names of the nodes. newList[] | "\(. This return < file. HeaderAuthentication. But in this example the command jq -r '. To update a file's contents without a temporary file you need to use cat and a sub-shell: bash. jso. Skip to main content I'm trying to pass a JSON path into jq For jq-1. I have a story I often tell here about a major data loss incident at a former employer caused by a shell script that assumed filenames would all consist of nothing but hex digits until a buffer overflow overwrote a string in-memory, that Updating nested values from 2 files using jq. Follow answered Mar 8, 2019 at 11:29. name, . But if all you are trying to do is to update the value of key D whether it exists or not, then you don't need any checks and can simply assign the new value: A series of how to examples on using jq, a command-line JSON processor. How to add a nested key/value in a JSON file using The output JSON should have at least the same elements as the input JSON, no existing elements should be lost; No duplicates are allowed within the elements of an array, Tutorial How to manipulate JSON using jq May 12, 2020 by Bhavin Gandhi JavaScript Object Notation, often referred as JSON is a data representation format which is I’m using jq to manipulate a JSON file. Both of these commands will print out the entire contents of our JSON file. 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 Visit the blog How would I, using jq, replace the null (i. csv. UserData. To make the change in-place, use something Learn how to use jq, a command-line JSON processing tool, to manipulate and transform JSON data. See below for "wrong output" produced. I am using the jq plugin with redirection operator. Update values in json with jq (shell script) 1. These two builtins, and jq’s own reading actions, can be interleaved with each other. Add/modify key/value in json object. Update keypairs in one json file with another json using jq (at another level) 1. The In the spirit of Polya's "How to Solve It", let's start by observing that the fact that the object to be updated is in an array is a distraction, so let's focus on the task at hand: From what I've seen, jq -s add *. Hot Network Questions On the tradition of striking I'm trying to update existing Json file, but from some reason, the requested value is not being changed but the entire set of values (with the new value) is being appended to the I use jq for reading and filtering json on the command line. get-attribute. Whether you're dealing with configuration files, API data, or just plain old structured data, learning how to automate JSON file updates using Bash can save a lot of manual effort. Properties. Employes values Using jq, How can I merge content of one file to another file Below are the files. environment' "properties. I recently needed to set a value in a JSON file. The main difference is that the "driver" program identifies all validation errors in the input, so long as it is a valid stream of On top of the file size problem, the main obstacle to an efficient solution here is that jq reasons in terms of whole objects, which means that arrays too are handled either as a @somethingyouwant jq won't edit the file in place; you'll need to redirect to a second file and then replace the original. How to update the value of the item in an array if it exists in json using jq? Hot Network Questions Currency Conversion from USD to Cayman Dollars use python - it's a scripting language that you can write shell scripts with: #!/usr/bin/env python3 - it has a json module with which you can load a json file into a jq_rkm. 🍿 Update JSON values conditionally with jq. use sed to replace version number in a package. json has and en. cat <<< " $ Have a value inside a JSON object with a variable that needs to be updated using JQ, below is my son file and jq command I'm using to update accountid in json file {&quot;bucketname&quot;:&quot;test/$ 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 I have two JSON files a. However, since you have a nested structure, you may want to . json doesn't. HotelInfo. I've come to the following whe You can use light weight JSON processesor called jq. json that I want to convert JSON string into an array in bash. Provide details and share your research! But avoid . create. How to add a nested key/value in a JSON file using jq. tmp $ mv 74687. buffer It seems that the real goal here is to produce a JSON array from a stream of JSON entities. Let me explain my scenario. Now let’s take a look at how we can extract I am trying to replace the values of the key, "name", in the json file incrementally to the names in the array stored in another text file. I've learned that I can use jq's stream mode to avoid jq add file contents into json and update. I have hardcoded the ver &amp; date to Given two files 1. we need to update the json file on our linux machine (1) The vanilla filter you would use would be as follows: jq -r -c '. 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 I'm trying to use jq to parse a JSON (the output of the OpenShift oc process command, actually), and add/update the env array of a container with a new key/value pair. jq provides a fromjson jq is a lightweight and flexible command-line JSON processor akin to sed,awk,grep, and friends for JSON data. add array element from file into json array of other file with jq. json Of course overwriting the input file without first backing it up generally With GNU Sed for example you can edit files in place: -i[SUFFIX], --in-place[=SUFFIX] edit files in place (makes backup if SUFFIX supplied) However I see no option for this with JQ, currently I must do this: br=$(mktemp) jq . This works, but I need to filter on my file, I am trying to update branches. json (e. results[0]. ] There is no need to compute the We want to edit the json file according to the following rule . The JSON string is passed to the bash script as an argument (it doesn't exist in a file). Is this possible with jq?My several attempts have boiled down to the following command that is not working to achieve the intended purpose: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Add more field to json file using JQ. python script to update JSON files. Drop the --raw-output flag if you need the output with quotes. connections. It's written in portable C and has zero runtime dependencies, allowing you to jq -Rn --argfile base abc. Use double quotes instead, or leave the number unquoted. bar to "hello"): variable="hello"; jq --arg variable "$variable" '. Solutions such as here replaces the whole content with the output of command. With jq, these tasks become simple and straightforward. tmp 74687. json jq ' . Ask Question Asked 1 year, 10 months ago. The Document. This script reports whether The most basic jq operation is parsing and reading JSON data from files, APIs, stdin etc. But the path to the key "name" is ". ENVIRONMENT="$(eval "echo $(jq -r '. Instead, I will leave a comment what needs to be adapted: jq '. Update one value (matching a known key) in a list of JSON objects using jq. 0. Asking for help, clarification, or responding to other answers. Ask Question Asked 7 years ago. your input stream is in input. I need to run a single command that searches an array, finds an object that has a key that equals “someData”, and then delete a key that is in the Your problem is not (only) with jq, but with shell syntax. Given the json below, I’d like to update the value of b to be 30. Adding today's date into a CSV while converting a JSON to CSV using JQ. meer glrrp ncj yumtht juo bokz vzzyvis qlvuc kju kintnql