ssh登录 File transfer server could not be stated or it exited unexpectedly exit va

用ssh登录的时候报了这个错？
File transfer server could not be stated or it exited unexpectedly
exit value 0 was returned most likely the sftp-server is not in the path of the user on the server-side

后来发现是服务器/etc的网络权限不够造成的，将/etc的访问权限提高一下就好了，主要原因是远程账号没有对/etc的可读权限造成的，用chmod 755 变成可读就好了。