Add README file

Author: howardshin1

Bash/JSON_Parse_with_jq/README.md

@@ -0,0 +1,17 @@
+### json parsing in bash
+
+`find_flag.sh` sctipt will tell you how to use [jq](https://stedolan.github.io/jq/) command to parse JSON file in bash with an example (`sample.json`)
+
+The script will run below 3 commands and find the flag from the `sample.json` file
+
+```bash
+$ cat sample.json | jq "." | head -n 13
+```
+
+```bash
+$ cat sample.json | jq ".data.allPosts.edges[0:3]"
+```
+
+```bash
+$ cat sample.json | jq ".data.allPosts.edges" | grep -E -o 'RotteN{.*}' | grep -v 'harder'
+```