jq was made specifically to process JSON, and is a CLI tool. If you're familiar with UNIX tools you could probably do a lot with the shell, sed, and awk. Know

jq was made specifically to process JSON, and is a CLI tool. If you're familiar with UNIX tools you could probably do a lot with the shell, sed, and awk. Knowing Perl might be useful in this situation, too, and it's an old and stable language with a huge library of modules (CPAN).