权限更改在OSX

Question

复制软件包时，我有充分的权限（777）（includeing子目录）

的包目录，每当我用cp将其复制到另一个目录-r我看到它失去了它的一些权限。

原因是什么？如何在保持其权限不变的情况下移动此软件包？

我有一个狮子版本。

谢谢

Answer 1

使用-p标志：

cp -Rp whatever whereever 

从cp手册页：

Cause cp to preserve the following attributes of each source file 
in the copy: modification time, access time, file flags, file mode, 
user ID, and group ID, as allowed by permissions. Access Control 
Lists (ACLs) and Extended Attributes (EAs), including resource 
forks, will also be preserved. 

If the user ID and group ID cannot be preserved, no error message 
is displayed and the exit value is not altered. 
If the source file has its set-user-ID bit on and the user ID can- 
not be preserved, the set-user-ID bit is not preserved in the 
copy's permissions. If the source file has its set-group-ID bit on 
and the group ID cannot be preserved, the set-group-ID bit is not 
preserved in the copy's permissions. If the source file has both 
its set-user-ID and set-group-ID bits on, and either the user ID or 
group ID cannot be preserved, neither the set-user-ID nor set- 
group-ID bits are preserved in the copy's permissions.