Not a direct part of the filesystem, but macOS does a good job of keeping a constantly up to date filesystem index. It powers Spotlight but is also used for ot

Not a direct part of the filesystem, but macOS does a good job of keeping a constantly up to date filesystem index. It powers Spotlight but is also used for other less user facing things. Running `mdfind` will locate whatever file I want near instantly and the index usually gets updated in a couple seconds. The background indexing does get bogged down when there’s a massive number of file changes, so I exclude things like “node_modules” folders. It also indexes the actual content of text files and not just filenames. Sadly the CLI interface for `mdfind` is incredibly obtuse and verbose, and very under documented [0]. When querying anything besides just a filename I still have to lookup the correct incantation. For example, here's how to do a case insensitive search for any folder containing "apple" modified in the last year: mdfind 'kMDItemDisplayName = "*apple*"c && kMDItemFSContentChangeDate <= $time.today(-365) && kMDItemKind == "Folder"' The mysterious `c` after `"apple"c` is how you specify a case insensitive search...of course. Compare that to fd: fd --changed-within=1y -t d -i apple [0] Nothing in the macOS man pages actually explains the `mdfind` query language, nor is there even a link or suggestion of where to learn more. This developer documentation sort of covers it, but it's not quite the same: https://developer.apple.com/documentation/corespotlight/cssearchquery https://developer.apple.com/documentation/corespotlight/csse...