@glyph OK, I thought of something. Over the last few months I kept seeing #jq mentioned in passing all over the place. I finally realised it was installed by default on all my machines and looked up the manual. I've now used it to poke around in unfamiliar datasets, extract data from huge JSON files into user-friendly CSVs, and alongside #jc I've been able to convert YAML files to JSON, and pull out just the interesting parts of my Apache log files. Sure I could do all this in Python but I'm old enough to have used sed, awk, and plain old grep, so I love a versatile tool that can manipulate standard input. I don't know why I overlooked jq for so long.