After Performing simple Terminal Command Mac 10.10 won't boot properly

hey guys,

recently, i followed the steps in this tutorial:

How to Change View Options for ALL Finder Windows?

After doing so, my MacBook Pro OS X 10.10 does not start properly, getting stuck at the turning wheel after typing in the pw.

I noticed the terminal going through every single folder saying "find rm 'xxx' is a directory"

I triple checked the command line before.

I tried booting in safe mode.

I Hope there is a solution other than wiping all of it.