环境: Ubuntu 12.04 , Octave 3.8.2
Octave是一个旨在提供与Matlab语法兼容的开放源代码科学计算及数值分析的工具，它支持向量和矩阵计算，方便写数学表达式。
安装步骤如下：
wget ftp://ftp.gnu.org/gnu/octave/octave-3.8.2.tar.gz
tar xvf octave-3.8.2.tar.gz
cd octave-3.8.2
./configure
make
sudo make install
进入命令行：
jerry@hq:~$ octave
warning: docstring file ‘/usr/local/share/octave/3.8.2/etc/built-in-docstrings’ not found
No protocol specified
GNU Octave, version 3.8.2
Copyright (C) 2014 John W. Eaton and others.
This is free software; see the source code for copying conditions.
There is ABSOLUTELY NO WARRANTY; not even for MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. For details, type ‘warranty’.
Octave was configured for “x86_64-unknown-linux-gnu”.
Additional information about Octave is available at http://www.octave.org.
Please contribute if you find this software useful.
For more information, visit http://www.octave.org/get-involved.html
Read http://www.octave.org/bugs.html to learn how to submit bug reports.
For information about changes from previous versions, type ‘news’.
octave:1>
ans = 3.8.2
octave:29> pi
ans = 3.1416
octave:30> A
A =
1 2
3 4
octave:31>
