Add Find And Copy A Value From Large JSON Output as a Unix TIL

README.md

@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
 
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-_1624 TILs and counting..._
+_1625 TILs and counting..._
 
 See some of the other learning resources I work on:
 - [Ruby Operator Lookup](https://www.visualmode.dev/ruby-operators)
@@ -1556,6 +1556,7 @@ If you've learned something here, support my efforts writing daily TILs by
 - [Find All Files Matching A Name With fd](unix/find-all-files-matching-a-name-with-fd.md)
 - [Find All Files With A Specific Extension With fd](unix/find-all-files-with-a-specific-extension-with-fd.md)
 - [Find All Tool Version Files Containing Postgres](unix/find-all-tool-version-files-containing-postgres.md)
+- [Find And Copy A Value From Large JSON Output](unix/find-and-copy-a-value-from-large-json-output.md)
 - [Find Any Dotfiles That Modify Path Env Var](unix/find-any-dotfiles-that-modify-path-env-var.md)
 - [Find A File Installed By Brew](unix/find-a-file-installed-by-brew.md)
 - [Find Duplicate Lines In A File](unix/find-duplicate-lines-in-a-file.md)

unix/find-and-copy-a-value-from-large-json-output.md

@@ -0,0 +1,22 @@
+# Find And Copy A Value From Large JSON Output
+
+I've been using [`fx`](https://github.com/antonmedv/fx) for years as a sidekick
+to [`jq`](https://jqlang.org/) when I want to explore a JSON document or JSON
+output that I'm not yet familiar with. A more recent version of `fx` added the
+ability to _yank_ (copy) values and keys you find in the document.
+
+For instance, I may be looking for some info about my AWS RDS instances, so I
+pipe that command to `fx`.
+
+```bash
+$ aws rds describe-db-instances --output json | fx
+```
+
+This takes a moment to process and then the `fx` viewer is populated with a
+large blob of JSON. I can then hit `/` to start a document search, type in
+something like `Endpoint`, and then look around for the specific key-value pair
+I'm interested in.
+
+I can then hit `y` to indicate that I want to copy the element under my cursor.
+If it is a key-value pair I will then be prompted to pick whether I want the
+value (`v`), the key (`k`), or the JSON path to this value (`p`).