Checks a JSON file for any duplicate keys, which would be ignored by the normal parser.
Inspired by and based off of a python-list mailing list post: <https://mail.python.org/pipermail/python-list/2013-May/660874.html>.
Usage:
`jsonchecker file_to_validate.json``jsonchecker directory/of/json/files/`
An optional --quiet argument can be passed, and will cause the script to print out a . instead of the full filename for each file scanned. Useful if you plan on checking a large number of files.
The script will exit with a status code of 1 if any duplicate keys are found, 0 if none are.
Released into the public domain.