Mac OSX fails with "Operation not permitted"

This is because file system is locked
You can solved this problem by run below command.

$ chflags -R nouchg /path/to/nopermitted

補充：
話說，我不小心下了以下的指令
$ chflags -R /path/to/specific

造成/path/to/specific下的所有檔案Operation not permitted

解決方法：
$ ls -lOAe
發現檔案多了以下的uappnd,nodump,opaque property

$ chflags -R noupappnd /path/to/specific/*
$ chflags -R noopaque /path/to/specific/*
$ chflags -R dump /path/to/specific/*

將property取消即可