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How to extract value of JSON key using BASH shell?
I would like to include something in my shell script that can extract the value of a certain key in a JSON string
How to find the value of key in JSON?
This uses grep twice. The result of the first command is “id”: “4dCYd4W9i6gHQHvd”; the second command removes everything but a pair of quotes and the non-quotes between them, anchored at the end of the string ( $ ). But, as pointed out, you shouldn’t use grep for this, but a tool that can parse JSON – for example jq:
Can you use grep to find a key in JSON?
But, as pointed out, you shouldn’t use grep for this, but a tool that can parse JSON – for example jq: This is just a simple filter for the id key in the data object.
How to find the value of a string in grep?
If you have a grep that can do Perl compatible regular expressions (PCRE): This uses grep twice. The result of the first command is “id”: “4dCYd4W9i6gHQHvd”; the second command removes everything but a pair of quotes and the non-quotes between them, anchored at the end of the string ( $ ).
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 😎.
Is there way to extract name from JSON?
It extracts “name” attribute from the json object. jq homepage says it is like sed for JSON data. If the system has node installed, it’s possible to use the -p print and -e evaulate script flags with JSON.parse to pull out any value that is needed.
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.