If you have ever received zip file created on MacOS, then you know all those annoying .DS_Store files popping up all over the place. The good news is that you can delete all .DS_Store files recursively with a simple one liner.
find -name '.DS_Store' -type f -delete
How it works
find iterates recursively over a directory tree. By default it start from the current directory. The rest of the command line is the expression. It is composed of different things. -name and -type are tests. Tests are used to match files. In this case all files (-type f, f is for file) named .DS_Store (-name '.DS_Store'). Actions are used to do something with the matched files. -delete is action that, as the name suggests, deletes the matched files. Keep in mind that the expression is evaluated from left to right, so if you put -delete first it will delete all files and directories.