我正在运行Ubuntu 12.10，并且尝试安装Netbeans 7.1（或更高版本），但我没有.sh文件，但无法安装，此处显示错误：

[2013-06-27 19:11:28.918]:      at org.netbeans.installer.Installer.main(Installer.java:81)
[2013-06-27 19:11:28.918]:     An error occured while initializing the NetBeans IDE installer UI.
[2013-06-27 19:11:28.918]:     Most probably the running JVM is not compatible with the current platform.
[2013-06-27 19:11:28.919]:     See FAQ at http://wiki.netbeans.org/FaqUnableToPrepareBundledJdk for more information.
[2013-06-27 19:11:28.919]:     /usr/local/java/jre1.7.0_25/lib/i386/xawt/libmawt.so: libXtst.so.6: cannot open shared object file: No such file or directory
[2013-06-27 19:11:28.919]:     
[2013-06-27 19:11:28.919]:     Exception:
[2013-06-27 19:11:28.919]:       java.lang.UnsatisfiedLinkError:
[2013-06-27 19:11:28.919]:       /usr/local/java/jre1.7.0_25/lib/i386/xawt/libmawt.so: libXtst.so.6: cannot open shared object file: No such file or directory
[2013-06-27 19:11:28.919]:     
[2013-06-27 19:11:28.919]:     You can get more details about the issue in the installer log file:
[2013-06-27 19:11:28.919]:      /root/.nbi/log/20130627191128.log

我在任何目录中都没有libXtst.so.6文件，而且似乎无法在任何地方找到要下载的文件。是否还有其他人遇到此问题，或者知道解决方法？