Remove first meta key from json records using shell


 
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Old 01-18-2019
I'm the same opinion as Andrew(apmd47). jq is the greatest command line tool for JSON-parsing and manipulation I know. It has a ton of possibilites to mangle / extract json data in this very small binary(<30K). It's written in portable c, with no runtime dependencies. See: jq

Last edited by stomp; 01-18-2019 at 06:22 AM..
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Mojo::JSON(3pm) 					User Contributed Perl Documentation					   Mojo::JSON(3pm)

NAME
Mojo::JSON - Minimalistic JSON SYNOPSIS
use Mojo::JSON; my $json = Mojo::JSON->new; my $bytes = $json->encode({foo => [1, 2], bar => 'hello!'}); my $hash = $json->decode($bytes); DESCRIPTION
Mojo::JSON is a minimalistic and relaxed implementation of RFC 4627. While it is possibly the fastest pure-Perl JSON parser available, you should not use it for validation. It supports normal Perl data types like "Scalar", "Array" reference, "Hash" reference and will try to call the "TO_JSON" method on blessed references, or stringify them if it doesn't exist. [1, -2, 3] -> [1, -2, 3] {"foo": "bar"} -> {foo => 'bar'} Literal names will be translated to and from Mojo::JSON constants or a similar native Perl value. true -> Mojo::JSON->true false -> Mojo::JSON->false null -> undef Decoding UTF-16 (LE/BE) and UTF-32 (LE/BE) will be handled transparently, encoding will only generate UTF-8. The two unicode whitespace characters "u2028" and "u2029" will always be escaped to make JSONP easier. ATTRIBUTES
Mojo::JSON implements the following attributes. "error" my $err = $json->error; $json = $json->error('Oops!'); Parser errors. METHODS
Mojo::JSON inherits all methods from Mojo::Base and implements the following new ones. "decode" my $array = $json->decode($bytes); my $hash = $json->decode($bytes); Decode JSON. "encode" my $bytes = $json->encode({foo => 'bar'}); Encode Perl structure. "false" my $false = Mojo::JSON->false; my $false = $json->false; False value, used because Perl has no native equivalent. "true" my $true = Mojo::JSON->true; my $true = $json->true; True value, used because Perl has no native equivalent. SEE ALSO
Mojolicious, Mojolicious::Guides, <http://mojolicio.us>. perl v5.14.2 2012-09-05 Mojo::JSON(3pm)