[f311a]

JQ is very convenient, even if your files are more than 100GB. I often need to extract one field from huge JSON line files, I just pipe jq to it to get results. It's slower, but implementing proper data processing will take more time.

[rennokki]

More than 100GB can be 101GB, 500GB or 1TB+. I was speaking about 1TB+ files. I'm not sure you can get it faster unless you have a parallel processor.