想著學習一下很火的swift，首先肯定是 ubuntu裡swift環境搭建，其實過程跟搭建java的環境是類似的

Requirements
Ubuntu 14.04 or 15.10 (64-bit)

由於是在VirtualBox虛擬機器環境下，上面的壓縮包有ubuntu版本要求，我安裝的是15.10 (64-bit) ，安裝過程可以參考上一篇 ，不會分割槽啥的就別點自己分割槽了，還是預設選第一個，讓系統自己去分。

虛擬機器安裝好後，我是弄了一個共性資料夾，把下載好的 swift-2.2-RELEASE-ubuntu15.10.tar.gz 複製進虛擬機器解壓

mkdir swift && cd swift;

tar xvt swift-2.2-RELEASE-ubuntu15.10.tar.gz

cd swift-2.2-RELEASE-ubuntu15.10

接著配置環境：

gedit $HOME/.bashrc

在最後新增：

#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

重啟一下環境：source ~/.bashrc（不放心你就重啟  reboot -h ）

然後輸入： swift  出現如下

環境就配好了

在上面的輸入模式下

:help   開啟幫助

:q   退出

1> let hello = "hello";
hello: String = "hello"

2> print(hello);
hello 

3>hello.   ///然後按Tab ,會有提示
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

- - - - - - - - - - - - 新增 - - - - - - -  -

ubuntu下火狐瀏覽器觀看視訊外掛安裝：

sudo apt-get update

apt-get install flashplugin-nonfree