Menu
I would like to convert a list into JSON array. I'm looking at jq for this but the examples are mostly about parsing JSON (not creating it). It would be nice to know proper escaping will occur. My list is single line elements so the new line will probably be the best delimiter.
468
jq command is used not only for reading JSON data but also to display data by removing the particular key. The following command will print all key values of Students. json file by excluding batch key. map and del function are used in jq command to do the task.
jq is an amazing little command line utility for working with JSON data. We've written before about how you can use jq to parse JSON on the command line, but in this post I want to talk about using jq to create JSON data from scratch or make changes to existing data.
A JSON array contains zero, one, or more ordered elements, separated by a comma. The JSON array is surrounded by square brackets [ ] . A JSON array is zero terminated, the first index of the array is zero (0). Therefore, the last index of the array is length - 1.
I was also trying to convert a bunch of lines into a JSON array, and was at a standstill until I realized that -s was the only way I could handle more than one line at a time in the jq expression, even if that meant I'd have to parse the newlines manually.
jq -R -s -c 'split("\n")' < just_lines.txt -R to read raw input-s to read all input as a single string-c to not pretty print the outputEasy peasy.
Edit: I'm on jq ≥ 1.4, which is apparently when the split built-in was introduced.
115
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
