@kite - I mean full text search using an index, so things like Windows Indexer, OS/X Spotlight, Linux Recoll.
AFAIK things like grep and findstr plough through the text when the command is issued, so on large datasets they tend to be slow... or very slow. I can search all my texts (books, scripts, email's etc) which is upwards of 600K items in under 30 seconds, if I limit the search to my book folders then 2-5 seconds.
The Index is on an SSD drive, but that's fairly recent, and I'm not convinced that it's significantly faster than it was when it was on a regular spinning-disk moving-head drive (other things are a lot faster - eg unpacking and packing zips and rars).
BR
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