sudo: effective uid is not 0, is sudo installed setuid root?

If you meet below error, it is cause that you changed root path.

sudo: effective uid is not 0, is sudo installed setuid root?

Maybe you try sudo chown $USER /usr/*** etc..

You should repair permission so open Disk Utility and Repair disk permissions.

f:id:hrt0kmt:20150618234110p:plain