Shell code/command with regex to validate json data file

Question

Looking for a shell command /code to validate json input file (if all characters {{[] are present) using regex. Especially end of the file data is ]} as my file json data ends with those characters.

Found we can do it with awk or sed, but unable to get command working on shell.

Thanks for the help!

Using regular expressions is simply not feasible. There are theoretical reasons why you cannot solve this problem with a regex. — tripleee
– tripleee, Commented Mar 29, 2019 at 16:22

Gilles Quénot · Accepted Answer · 2019-03-29 16:20:37Z

2

To validate a JSON file, use a proper tool/parser: jq.

#!/bin/bash

jq file.json &>/dev/null || echo >&2 "invalid JSON"

answered Mar 29, 2019 at 16:20

Gilles Quénot

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Naveen Over a year ago

Unfortunately, OS is redhat 5.xx . I can't install any new tools for security reasons. jq is not present on the system. Any other way ?

SachinPatil4991 · Accepted Answer · 2019-03-30 10:15:47Z

0

If you do not want to install any other tool but if you have php installed you can use php's json parser from command line

php -r "if ( json_decode(file_get_contents('file.json')) == null ) { echo 'Invalid Json Data'; } else { echo 'Valid Json File'; } "

answered Mar 30, 2019 at 10:15

SachinPatil4991

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