How to tag everything stored in a Linux filesystem?

How would I accomplish the following in Linux using the BTRFS filesystem? In Mac OS X El Capitan you can use tags to organize files. You can tag files and folders to make them easier to find. Tags work with all files and folders. You can add multiple tags to any file (or folder?). https://support.apple.com/kb/PH22180?locale=en_US Of course, the purpose of these tags is for finding / searching by tag. Mac OS X Finder includes support for tags. In Linux, it's OK if I have to use command line tools to accomplish tagging and search by tags (and related functions).