运行 X&出现的问题,哪位能看懂说什么啊???

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[root@localhost /]# X&
[1] 2151
[root@localhost /]#
Fatal server error:
Server is already active for display 0
        If this server is no longer running, remove /tmp/.X0-lock
        and start again.


When reporting a problem related to a server crash, please send
the full server output, not just the last messages.
Please report problems to xfree86@xfree86.org.

japonensis

你已经运行了一个X了，使用 X :1 &

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谢了
这个好像是后台运行X吧???
请问想把一个X添加到我的小系统上
都需要哪些必要目录呀??