ubuntu之swift环境搭建
想着学习一下很火的swift，首先肯定是 ubuntu里swift环境搭建，其实过程跟搭建java的环境是类似的
官网下载压缩包：https://swift.org/download/#releases
Requirements
Ubuntu 14.04 or 15.10 (64-bit)
由于是在VirtualBox虚拟机环境下，上面的压缩包有ubuntu版本要求，我安装的是15.10 (64-bit) ，安装过程可以参考上一篇 ，不会分区啥的就别点自己分区了，还是默认选第一个，让系统自己去分。
虚拟机安装好后，我是弄了一个共性文件夹，把下载好的 swift-2.2-RELEASE-ubuntu15.10.tar.gz 复制进虚拟机解压
mkdir swift && cd swift;
tar xvt swift-2.2-RELEASE-ubuntu15.10.tar.gz
cd swift-2.2-RELEASE-ubuntu15.10
接着配置环境：
gedit $HOME/.bashrc
在最后新增：
#swift
export SWIFT_HOME=$HOME/swift/swift-2.2-RELEASE-ubuntu15.10
export PATH=$SWIFT_HOME/usr/bin:$PATH
export LD_LIBRARY_PATH=$SWIFT_HOME/usr/lib:$LD_LIBRARY_PATH
export LIBRARY_PATH=$SWIFT_HOME/usr/lib:$LIBRARY_PATH
重启一下环境：source ~/.bashrc（不放心你就重启 reboot -h ）
然后输入： swift 出现如下
环境就配好了
在上面的输入模式下
:help 打开帮助
:q 退出
1> let hello = "hello"; hello: String = "hello"2> print(hello); hello 3>hello. ///然后按Tab ,会有提示 Available completions: append(c: Character) -> Void append(x: UnicodeScalar) -> Void appendContentsOf(newElements: S) -> Void appendContentsOf(other: String) -> Void characters: String.CharacterView debugDescription: String endIndex: Index hashValue: Int insert(newElement: Character, atIndex: Index) -> Void insertContentsOf(newElements: S, at: Index) -> Void isEmpty: Bool lowercaseString: String nulTerminatedUTF8: ContiguousArray<CodeUnit> removeAll() -> Void removeAll(keepCapacity: Bool) -> Void removeAtIndex(i: Index) -> Character removeRange(subRange: Range<Index>) -> Void replaceRange(subRange: Range<Index>, with: C) -> Void replaceRange(subRange: Range<Index>, with: String) -> Void reserveCapacity(n: Int) -> Void startIndex: Index unicodeScalars: String.UnicodeScalarView uppercaseString: String utf16: String.UTF16View utf8: String.UTF8View withCString(f: UnsafePointer<Int8> throws -> ResultUnsafePointer<Int8> throws -> Result) -> Result withMutableCharacters(body: (inout String.CharacterView) -> R(inout String.CharacterView) -> R) -> R write(other: String) -> Void writeTo(&target: Target) -> Void 4> hello.isEmpty $R0: Bool = false
参考：http://www.linuxidc.com/Linux/2015-12/125983.htm
- - - - - - - - - - - - 新增 - - - - - - - -
ubuntu下火狐浏览器观看视频插件安装：
sudo apt-get update
apt-get install flashplugin-nonfree