fsql is a tool I came across recently, while searching for Go projects on github. It's a command line tool that lets you run SQL-like queries on your file system. You can search through your files based on their name, size, mode, and time.
It'll take you 10 min to get setup, and start using it like a (semi-)pro. It's definetly one of my favourite command line tools now. You'll find everything you need to know about it on its Github page.