Ubuntu 14.04.2 root登陆报错解决方案

I. 报错信息

Error found when loading /root/.profile:
stdin: is not a tty
As a result the session will not be configured correctly. You should fix the problem as soon as feasible.

II. 解决方案

1. gedit /root/.profile
2. mesg n -> tty -s && mesg n

III. 相关资料

"stdin: is not a tty" due to "mesg n" instead of "tty -s && mesg n" in .profile