SSH

http://www.journaldev.com/246/java-program-to-run-shell-commands-on-ssh-enabled-system

http://www.easywayserver.com/blog/java-run-ssh-commands-in-linux/

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找到su的解决问题了：

http://www.linuxyan.com/shell/252.html

http://bbao.cc.blog.163.com/blog/static/1385220832012102411511529/

http://www.ganymed.ethz.ch/ssh2/FAQ.html

代码分析与混淆：

http://proguard.sourceforge.net/

http://spoon.gforge.inria.fr/

Securing SSH: protocol SSH2 and hiding the direct access of root：

http://www.webhostingtalk.com/showthread.php?t=519234