Unless you plan to account for all of this, you should use something that is aware of the JSON's structure, rather than treating it as text. Passing in the users API returned the name of each user, but also the username (which grep matched as well), as well as the name of the company (which had the exact same key). However, this can (and probably will) break very easily with any changes in the JSON. You could also use simple text selection utilities for example, if you just need a specific key out of a response, you could use grep alongside a regular expression to select the value: Create testing JSON trees, use value transformers to generate / transform JSON values. Powerful JSON Tree tool for app and web developers. You would instead pipe the JSON command output to a file:Īnd then load it into a variable within the script for use. Download Smart JSON Editor for macOS 10.12 or later and enjoy it on your Mac. The easiest method is to forego doing it in bash, and instead use a scripting language like Python or JavaScript (with node) to do the actual processing. If you don't want to use another program, you could use a few alternatives. Though keep in mind that if an array is empty, it doesn't mean it's an invalid property. You can slice arrays using, and use the same question mark syntax for optional properties. For example, you could get the name of the first entry with: Edit, visualize, export - The ultimate JSON-driven Data Management app. You can use square brackets to get a specific array element. Compatible with M1/M2 and the latest macOS Sonoma. Working with arrays is where jq gets interesting. data.geo?.host", which specifies that the property is optional. Optionally, you can add a question mark for error checking like ". You can nest this as well for example, '.' would return a value farther down the list. If you simply want to get a key from the object, you can do: You can also curl to a file and pipe cat to jq, if you don't want to see the curl output every time you test a new command.Ī simple period '. For simplicity's sake, we'll leave out the curl command and pipe to keep everything readable. We'll use this JSONPlaceholder as an example API to try out commands. If you give jq a command, it will use it to select data out of the JSON, much like how sed operates on text.
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