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What is jq in shell script?
jq is a lightweight and flexible command-line JSON processor. If you are a command line addict, you will like the official description. jq is like sed for JSON data – 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.
What is YQ?
yq is a lightweight and portable command-line YAML processor. yq uses jq like syntax but works with yaml files as well as json. It doesn’t yet support everything jq does – but it does support the most common operations and functions, and more is being added continuously.
Which is the best way to parse JSON?
Rather than trying to implement a JSON parser, you are likely better off using either a tool built for JSON parsing such as jq or a general purpose script language that has a JSON library. For example, using jq, you could pull out the ImageID from the first item of the Instances array as follows:
Can You parse JSON in a shell script?
Parsing JSON is painful in a shell script. With a more appropriate language, create a tool that extracts JSON attributes in a way consistent with shell scripting conventions. You can use your new tool to solve the immediate shell scripting problem and then add it to your kit for future situations.
What’s the best way to use JSON in Bash?
Bash doesn’t understand JSON out of the box, and using the typical text manipulation tools like grep, sed, or awk, gets difficult. Luckily there’s a better way using a tool called jq. jq can simplify the above bash to this: That’s much nicer 😎.
What does JSON stand for in Linux command line?
We’ll show you how to handle it from the Linux command line using the jq command. JSON stands for JavaScript Object Notation. It’s a scheme that allows data to be encoded into plain text files, in a self-describing way. There are no comments in a JSON file—the contents should be self-explanatory.