Bash parse yaml array I have two jobs in GitHub Actions. In the Bash shell, we need tools to deal with YAML content from the command line or script. Feb 21, 2017 · Sometimes this approach of creating a state machine variable like bar_started and state info like a bar_out string can allow rather more complicated awk programs. Feb 11, 2023 · I'm working on a GitHub Action workflow that uses an array for input. Type: AWS::ElasticLoadBalancing::LoadBalancer Properties: AvailabilityZones Jan 7, 2019 · Option 2, defining the array as YAML array and parsing it in your BASH script with python makes the definition better readable and more solid, but adds a dependency to python for your BASH script. 2. May 21, 2009 · Learn how to parse XML in Bash with examples and explanations. Consider the following YAML: Dec 17, 2024 · The yq command is a powerful, lightweight, and highly portable command-line tool designed to parse, manipulate, and transform YAML files. This blog post will walk you through the fundamental concepts of Python parsing Jul 14, 2016 · #!/usr/bin/env bash declare -a values # declare the array # Read each line and use regex parsing (with Bash's `=~` operator) # to extract the value. But sed also isn't a YAML parser. Portability – YAML arrays are programming language agnostic and Dec 14, 2023 · Bash read array refers to the reading into an array from external data sources and this article will discuss 3 methods to read into an array. In this article, we will discuss multiple ways to parse YAML in JavaScript using NodeJS libraries. sh Mar 21, 2025 · YAML (YAML Ain't Markup Language) is a human - friendly data serialization format. Here is what the multidimensional array would look like: { &quot;FILES&quot;: [ [ &quot;file1. In YAML, special characters must be properly escaped to ensure they are interpreted correctly. yq is a great command-line tool for templating YAML files, and it’s a lighter weight option to popular Jul 23, 2025 · YAML (YAML Ain’t Markup Language) is a popular human-readable data serialization format often used for configuration files and data exchange. y2s stands for "YAML2struct". For example, the state variable might need more values than 0 or 1, and the the stored state info might more complex (array or several variables). Apr 11, 2015 · 3 You can parse yaml/json file directly in your shell/bash with niet. Block scalar formats Feb 3, 2022 · 0 Let's say I have a yaml file like this one: foo: bar: 1 env: firstVar: true secondVar: 20 aa_thirdVar: 'hello' aa_fourthVar: false and I need to get the keys under the env key except for the keys with aa_ prefix as a bash array in order to use the array in a bash script. Feb 28, 2021 · Usage: yq [flags] yq [command] Available Commands: eval Apply expression to each document in each yaml file given in sequence eval-all Loads _all_ yaml documents of _all_ yaml files and runs expression once help Help about any command shell-completion Generate completion script Flags: -C, --colors force print with colors -e, --exit-status set exit status if there are no matches or null or May 22, 2023 · The -c would keep it as a single line and be able to parse it, so essentially it was one line per 'disk' in the disks array. In this guide, we explored how to use Bash to parse YAML data effectively. . We have a job that sets up a strategy matrix called apps that should contain an array of strings. Tools like jq for JSON and yq for YAML make it easier to handle these formats in shell scripts. Note that any script that starts with #!/bin/sh is a POSIX sh script, not a bash script. Contribute to t0pd4wn/yb development by creating an account on GitHub. Ideal for developers and system administrators, `yq` maintains original file formatting Oct 6, 2024 · Practical techniques for data manipulation in Bash, focusing on arrays, strings, and parameter expansion. Jan 9, 2023 · Filter an array and iterate on selected entries in shell script #1511 Mar 14, 2023 · Re The bash array entries retain the - symbols: Of course they do, they are part of their value. sh I would like to merge arrays in YAML, and load them via ruby - Sep 20, 2019 · I would like to pass array as property in yaml (values file) in Helm. Feb 8, 2024 · Unfortunately, you cannot just import a bash array as a YAML array, as yq imports variables through the environment, and "There isn't really a good way to encode an array variable into the environment" (by Chet Ramey, the current maintainer of bash). I get the Nov 17, 2021 · bash: line 128: export: `arr[0]': not a valid identifier Is there any way to use array variable in . YAML (YAML Ain't Markup Language) has emerged as a popular format for writing human-readable configuration files due to its simplicity and flexibility. Here are some basic as well as real word examples of array in YAML. Oct 4, 2019 · I have a config. < in. Or just hard-code the list of directories into your pipeline or put them in a variable in the pipeline YAML that you have to update when the list of directories changes. fhrkvvv fbzfgtqc zcb mryotzfx nzbwvpdn rxclcyx zarl hhvy swoqpwk csspyli oyony rxwki rwkd ajijv oxjcv