ssh连接错误:WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!

SSH连接服务器时,经常会出现如下错误:
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA host key has just been changed.
Please contact your system administrator.
Add correct host key in /home/hogehoge/.ssh/known_hosts to get rid of this message.
RSA host key for 192.168.0.1 has changed and you have requested strict checking.

这个错误好像是说/.ssh/known_hosts中的key有问题,所以只要将该文件中的相关key删掉,重新连接就可以了.

INIT: Id "x" respawning too fast: disabled for 5 minutes

/etc/inittab 中启动方式设置为图形界面启动时,
id:5:initdefault:
开机出现如下错误:
INIT: Id "x" respawning too fast: disabled for 5 minutes

原因可能是某些包丢失,可尝试如下命令,进行重新安装,一般都能成功解决.
# yum groupinstall "X Window System"(或 "GNOME Desktop Environment")

JavaFX学习日记

1.使用JavaFXPad
已成功安装JDK之后,可以使用javaws命令来启动它:
javaws http://download.java.net/general/openjfx/demos/javafxpad.jnlp