Julia是编程语言，下面是关于Julia的介绍：
Julia 是一个面向科学计算的高性能动态高级程序设计语言。其语法与其他科学计算语言相似。在许多情况下拥有能与编译型语言相媲美的性能。
Julia is a high-level, high-performance dynamic programming language for technical computing, with syntax that is familiar to users of other technical computing environments. It provides a sophisticated compiler, distributed parallel execution, numerical accuracy, and an extensive mathematical function library. Julia’s Base library, largely written in Julia itself, also integrates mature, best-of-breed open source C and Fortran libraries for linear algebra, random number generation, signal processing, and string processing. In addition, the Julia developer community is contributing a number of external packages through Julia’s built-in package manager at a rapid pace. IJulia, a collaboration between the Jupyter and Julia communities, provides a powerful browser-based graphical notebook interface to Julia.
特点：
核心语言非常小。标准库用的是 Julia 语言本身写的
调用许多其它成熟的高性能基础代码。如线性代数、随机数生成、快速傅里叶变换、字符串处理。（还在增加中……）
丰富的用于建立或描述对象的类型语法
高性能，接近于静态编译型语言。包括用户自定义类型等
为并行计算和分布式计算而设计
轻量级协程
优雅的可扩展的类型转换/提升
支持Unicode, 包括但不限于UTF-8
可直接调用 C 函数（不需要包装或是借助特殊的API）
有类似shell的进程管理能力
有类似Lisp的宏以及其它元编程工具
Julia官方下载地址：http://julialang.org/downloads/
ubuntu 16.04 64bit下安装Julia的方法：
sudo add-apt-repository ppa:staticfloat/juliareleases
sudo add-apt-repository ppa:staticfloat/julia-deps
sudo apt-get update
sudo apt-get install julia