（1）报以下错误：
License checkout failed.
License Manager Error -95
MATLAB is unable to connect to the license server.
Make sure you can resolve the hostname of your machine.
If you are unable to resolve the hostname, contact your System Administrator.
Troubleshoot this issue by visiting:
http://www.mathworks.com/support/lme/R2016b/95
Diagnostic Information:
Feature: MATLAB
License path: /home/lxxx/.matlab/R2016b_licenses:/usr/local/MATLAB/R2016b/licenses/license.dat:/usr/local/M
ATLAB/R2016b/licenses/network.lic
Licensing error: -95,378. System Error: 115
解决办法： 将破解文件夹中的：license_server.lic和license_standalone.lic 拷贝到/usr/local/MATLAB/R2016b/licenses 文件夹下
ubuntu 16.04安装MATLAB/R2016b教程参考：https://blog.csdn.net/Jesse_Mx/article/details/53956358
（2）启动matlab时一直卡在启动画面 (参考网址：https://blog.csdn.net/hanlin_tan/article/details/61932134)
启动matlab后一直卡在splash界面(小窗口)。这个错误的原因是用root运行过matlab，在当前用户目录下留下了一些缓存，而这些缓存再用普通用户无权限访问。
解决方法：删除用户目录下的matlab缓存。
sudo rm -r -f ~/.matlab/