摘要?
介紹在Ubuntu平臺搭建Swift開發環境； 介紹Swift腳本解析器swift的使用； 介紹Swift編譯器swiftc的使用；

1.序言

這兩天一直忙，沒來得及記錄東西，周三12月4日凌晨1點多看到蘋果正式開源了Swift，國外各大媒體資訊動作超級快。我也興奮的起來看了一遍關于Swift開源的最新消息。眾所周知，蘋果平臺的Swift語言已經出來了一年半了，一直在成長，經歷了好幾個版本。許多人盼望的swift開源是希望可以在除了蘋果平臺之外的平臺可以運用這個新語言。比如有人希望將來可以用swift也可以擼一擼后臺開發之類，理論上是沒問題的，但是同樣也有人會噴這么一個愿景，但是開源一出后，多多少少社區人員會去往這個方面去努力的。蘋果官方為swift新搞了個網站swift.org,也放出來了Ubuntu Linux平臺的預編譯好的swift工具鏈的打包文件以及Linux下的編譯指南。我今天寫這么一博客的目的就是為了介紹和推廣Swift語言在初學者或者低年級大學生群體中的運用。

2.Swift+Ubuntu環境配置

首先假定我們已經安裝好Ubuntu Linux操作系統了，這個系統安裝很簡單，網上很多的步驟教程，虛擬機的話推薦用VirtualBox。Swift支持Ubuntu 14.04和15.10兩個發型版，我這選擇15.10版本的包。

第一步：下載 Swift 2.2 工具鏈壓縮包,打開終端，輸入命令新建目錄并下載

<code class="hljs ruby has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span style="font-size:18px;">diveinedu<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@diveinedu</span>-<span class="hljs-constant" style="box-sizing: border-box;">VirtualBox</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:~</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$ </span>mkdir swift && cd swift; diveinedu<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@diveinedu</span>-<span class="hljs-constant" style="box-sizing: border-box;">VirtualBox</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:~/swift</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$ </span>wget <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">https:</span>/<span class="hljs-regexp" style="color: rgb(0, 136, 0); box-sizing: border-box;">/swift.org/builds</span><span class="hljs-regexp" style="color: rgb(0, 136, 0); box-sizing: border-box;">/ubuntu1510/swift</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2.2</span>-<span class="hljs-constant" style="box-sizing: border-box;">SNAPSHOT</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2015</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">01</span>-b/swift-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2.2</span>-<span class="hljs-constant" style="box-sizing: border-box;">SNAPSHOT</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2015</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">01</span>-b-ubuntu15.<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">10</span>.tar.gz</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">1</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">2</span></li></ul>

第二步：用tar命令解壓 Swift 2.2 工具鏈壓縮包到當前目錄，并配置環境變量

先解壓，再進入目錄，目錄下會有usr/bin和usr/lib等等子目錄：bash diveinedu@diveinedu-VirtualBox:~/swift$ tar xvf swift-2.2-SNAPSHOT-2015-12-01-b-ubuntu15.10.tar.gzdiveinedu@diveinedu-VirtualBox:~/swift$ cd swift-2.2-SNAPSHOT-2015-12-01-b-ubuntu15.10/?然后配置用戶級別的環境變量，編輯$HOME/.bashrc配置文件

<code class="hljs ruby has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span style="font-size:18px;">diveinedu<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@diveinedu</span>-<span class="hljs-constant" style="box-sizing: border-box;">VirtualBox</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:~/swift/swift-</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2.2</span>-<span class="hljs-constant" style="box-sizing: border-box;">SNAPSHOT</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2015</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">01</span>-b-ubuntu15.<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">10</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$ </span>gedit <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$HOME</span>/.bashrc</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">1</span></li></ul>

上面命令會調出圖形界面文本編輯器GEdit來編輯這個配置文件，在文件的最后輸入如下配置行并保存退出編輯器

<code class="hljs bash has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span style="font-size:18px;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">export</span> SWIFT_HOME=<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$HOME</span>/swift/swift-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2.2</span>-SNAPSHOT-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2015</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12</span>-<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">01</span>-b-ubuntu15.<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">10</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">export</span> PATH=<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$SWIFT_HOME</span>/usr/bin:<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$PATH</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">export</span> LD_LIBRARY_PATH=<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$SWIFT_HOME</span>/usr/lib:<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$LD_LIBRARY_PATH</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">export</span> LIBRARY_PATH=<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$SWIFT_HOME</span>/usr/lib:<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$LIBRARY_PATH</span></span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">1</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">2</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">3</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">4</span></li></ul>

這樣環境變量就配置OK啦。這個時候我們只需要關閉我們的Shell終端重新打開終端就生效了。

3.Swift+Ubuntu初次體驗

搞過iOS開發的都知道，2014年6月Swift剛出世時就隨Xcode帶了Playground功能，可以邊寫邊看運行結果，辣么在Ubuntu Linux下有沒有類似的呢，也有，只是沒那么強大的IDE支持，我們一樣可以運行類似Pyhton腳本解析器一樣的Swift解析器，同步輸入Swift代碼來“解析”運行。這個命令就是swift，在上面的環境變量設置完后重開終端就可以直接使用了,如下所示。

<code class="hljs coffeescript has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span style="font-size:18px;">diveinedu<span class="hljs-property" style="box-sizing: border-box;">@diveinedu</span>-<span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">VirtualBox</span>:~$ swift Welcome to Swift version <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2.2</span>-dev (LLVM <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">46</span>be9ff861, Clang <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>deb154edc, Swift <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">778</span>f82939c). Type :help <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> assistance.<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>> <span class="hljs-reserved" style="box-sizing: border-box;">let</span> hello = <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"hello"</span>; <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">hello</span>: String = <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"hello"</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>> <span class="hljs-reserved" style="box-sizing: border-box;">let</span> world = <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"diveinedu"</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">world</span>: String = <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"diveinedu"</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>> <span class="hljs-reserved" style="box-sizing: border-box;">let</span> space = <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">" "</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">space</span>: String = <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">" "</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">print</span>(hello+space+world); hello diveinedu<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>>hello. Available <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">completions</span>:append<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(c: Character)</span> -></span> Voidappend<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(x: UnicodeScalar)</span> -></span> VoidappendContentsOf<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(newElements: S)</span> -></span> VoidappendContentsOf<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(other: String)</span> -></span> Void<span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">characters</span>: String.CharacterView<span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">debugDescription</span>: String<span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">endIndex</span>: Index<span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">hashValue</span>: Intinsert<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(newElement: Character, atIndex: Index)</span> -></span> VoidinsertContentsOf<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(newElements: S, at: Index)</span> -></span> Void<span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">isEmpty</span>: Bool<span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">lowercaseString</span>: String<span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">nulTerminatedUTF8</span>: ContiguousArray<CodeUnit>removeAll<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">()</span> -></span> VoidremoveAll<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(keepCapacity: Bool)</span> -></span> VoidremoveAtIndex<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(i: Index)</span> -></span> CharacterremoveRange<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(subRange: Range<Index>)</span> -></span> VoidreplaceRange<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(subRange: Range<Index>, <span class="hljs-reserved" style="box-sizing: border-box;">with</span>: C)</span> -></span> VoidreplaceRange<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(subRange: Range<Index>, <span class="hljs-reserved" style="box-sizing: border-box;">with</span>: String)</span> -></span> VoidreserveCapacity<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(n: Int)</span> -></span> Void<span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">startIndex</span>: Index<span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">unicodeScalars</span>: String.UnicodeScalarView<span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">uppercaseString</span>: String<span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">utf16</span>: String.UTF16View<span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">utf8</span>: String.UTF8ViewwithCString<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(f: UnsafePointer<Int8> throws -> ResultUnsafePointer<Int8> throws -> Result)</span> -></span> ResultwithMutableCharacters<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(body: (inout String.CharacterView) -> R(inout String.CharacterView) -> R)</span> -></span> Rwrite<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(other: String)</span> -></span> VoidwriteTo<span class="hljs-function" style="box-sizing: border-box;"><span class="hljs-params" style="color: rgb(102, 0, 102); box-sizing: border-box;">(&target: Target)</span> -></span> Void<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">6</span>> hello.isEmpty <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">$R0</span>: Bool = <span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">false</span></span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">1</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">2</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">3</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">4</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">5</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">6</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">7</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">8</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">9</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">10</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">11</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">12</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">13</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">14</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">15</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">16</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">17</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">18</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">19</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">20</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">21</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">22</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">23</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">24</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">25</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">26</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">27</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">28</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">29</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">30</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">31</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">32</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">33</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">34</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">35</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">36</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">37</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">38</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">39</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">40</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">41</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">42</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">43</span></li></ul>

在這個解析執行界面還有自動提示補全功能！簡直四國矣.上面第五行是輸入hello后再輸入一點.然后按tab鍵，一下就出來這么多關于字符串的方法，媽媽再也不擔心我在終端模式下不記得方法名了。

上面這特簡單的幾行代碼還沒包含類和對象，下面看看在swift解析器中直接輸入類的定義和對象創建和簡單使用。

<code class="hljs coffeescript has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span style="font-size:18px;">diveinedu<span class="hljs-property" style="box-sizing: border-box;">@diveinedu</span>-<span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">VirtualBox</span>:~$ swift Welcome to Swift version <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2.2</span>-dev (LLVM <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">46</span>be9ff861, Clang <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4</span>deb154edc, Swift <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">778</span>f82939c). Type :help <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">for</span> assistance.<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1</span>> struct Resolution {<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2.</span> <span class="hljs-reserved" style="box-sizing: border-box;">var</span> width = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3.</span> <span class="hljs-reserved" style="box-sizing: border-box;">var</span> height = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4.</span> }<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5.</span> <span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">class</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">VideoMode</span> {</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">6.</span> <span class="hljs-reserved" style="box-sizing: border-box;">var</span> resolution = Resolution()<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">7.</span> <span class="hljs-reserved" style="box-sizing: border-box;">var</span> interlaced = <span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">false</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">8.</span> <span class="hljs-reserved" style="box-sizing: border-box;">var</span> frameRate = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0.0</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">9.</span> <span class="hljs-reserved" style="box-sizing: border-box;">var</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">name</span>: String?<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">10.</span> func description()<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">11.</span> {<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12.</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">print</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"name:\(name) frameRate:\(frameRate)"</span>)<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">13.</span> }<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">14.</span> }<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">15</span>> <span class="hljs-reserved" style="box-sizing: border-box;">let</span> mode = VideoMode() <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">mode</span>: VideoMode = {resolution = {width = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>height = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>}interlaced = <span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">false</span>frameRate = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>name = nil }<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">16</span>> mode.name = <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"1080p HD"</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">17</span>> mode.frameRate = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">30.0</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">18</span>> mode.description() <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">name</span>:Optional(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"1080p HD"</span>) <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">frameRate</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">30.0</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">19</span>></span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">1</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">2</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">3</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">4</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">5</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">6</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">7</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">8</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">9</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">10</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">11</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">12</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">13</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">14</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">15</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">16</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">17</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">18</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">19</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">20</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">21</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">22</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">23</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">24</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">25</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">26</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">27</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">28</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">29</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">30</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">31</span></li></ul>

這些都只是在swift解析器中臨時性的運行一些代碼，如果我們需要新建.swift格式文件然后編譯成可執行二進制文件形式又要怎樣做呢，同樣很簡單，我們可以用swiftc這個命令來編譯。 我們可以新建一個目錄來存放swift代碼文件,然后編輯一個test.swift：

<code class="hljs ruby has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span style="font-size:18px;">diveinedu<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@diveinedu</span>-<span class="hljs-constant" style="box-sizing: border-box;">VirtualBox</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:~</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$ </span>mkdir -p <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$HOME</span>/swift/swiftcode diveinedu<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@diveinedu</span>-<span class="hljs-constant" style="box-sizing: border-box;">VirtualBox</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:~</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$ </span>cd <span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$HOME</span>/swift/swiftcode diveinedu<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@diveinedu</span>-<span class="hljs-constant" style="box-sizing: border-box;">VirtualBox</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:~/swift/swiftcode</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$ </span>gedit test.swift</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">1</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">2</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">3</span></li></ul>

當打開gedit文本編輯器后，輸入上面的類和對象創建以及方法調用的代碼,列出在下面

<code class="hljs coffeescript has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span style="font-size:18px;">struct Resolution {<span class="hljs-reserved" style="box-sizing: border-box;">var</span> width = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span><span class="hljs-reserved" style="box-sizing: border-box;">var</span> height = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span> } <span class="hljs-class" style="box-sizing: border-box;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">class</span> <span class="hljs-title" style="box-sizing: border-box; color: rgb(102, 0, 102);">VideoMode</span> {</span><span class="hljs-reserved" style="box-sizing: border-box;">var</span> resolution = Resolution()<span class="hljs-reserved" style="box-sizing: border-box;">var</span> interlaced = <span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">false</span><span class="hljs-reserved" style="box-sizing: border-box;">var</span> frameRate = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0.0</span><span class="hljs-reserved" style="box-sizing: border-box;">var</span> <span class="hljs-attribute" style="box-sizing: border-box; color: rgb(0, 136, 0);">name</span>: String?func description(){<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">print</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"name:\(name) frameRate:\(frameRate)"</span>)} } <span class="hljs-reserved" style="box-sizing: border-box;">let</span> mode = VideoMode() mode.name = <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"1080p HD"</span> mode.frameRate = <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">30.0</span> mode.description()</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">1</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">2</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">3</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">4</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">5</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">6</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">7</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">8</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">9</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">10</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">11</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">12</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">13</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">14</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">15</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">16</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">17</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">18</span></li></ul>

保存后關閉編輯器，然后執行swiftc test.swift來編譯源文件，會出現如下鏈接錯誤：

<code class="hljs ruby has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span style="font-size:18px;">diveinedu<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@diveinedu</span>-<span class="hljs-constant" style="box-sizing: border-box;">VirtualBox</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:~/swift/swiftcode</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$ </span>swiftc test.swift <unknown><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:</span> <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">error:</span> link command failed with exit code <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">127</span> (use -v to see invocation) diveinedu<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@diveinedu</span>-<span class="hljs-constant" style="box-sizing: border-box;">VirtualBox</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:~/swift/swiftcode</span>$</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">1</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">2</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">3</span></li></ul>

解決辦法是安裝編譯依賴clang libicu-dev,輸入下面命令回車(會詢問當前用戶密碼)bash diveinedu@diveinedu-VirtualBox:~/swift/swiftcode$ sudo apt-get install clang libicu-dev?安裝完成后再次執行編譯命令swiftc test.swift就順利編譯成功，再當前目錄下輸出test可執行文件。

<code class="hljs ruby has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span style="font-size:18px;">diveinedu<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@diveinedu</span>-<span class="hljs-constant" style="box-sizing: border-box;">VirtualBox</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:~/swift/swiftcode</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$ </span>swiftc test.swift diveinedu<span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">@diveinedu</span>-<span class="hljs-constant" style="box-sizing: border-box;">VirtualBox</span><span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">:~/swift/swiftcode</span><span class="hljs-variable" style="color: rgb(102, 0, 102); box-sizing: border-box;">$ </span>./test <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">name:</span><span class="hljs-constant" style="box-sizing: border-box;">Optional</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"1080p HD"</span>) <span class="hljs-symbol" style="color: rgb(0, 102, 102); box-sizing: border-box;">frameRate:</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">30.0</span></span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">1</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">2</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">3</span></li></ul>

而且執行ldd ./test查看此二進制文件依賴的動態庫可知，它鏈接了libswiftCore，這是所有swift程序都會需要的。

<code class="hljs lasso has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span style="font-size:18px;">diveinedu@diveinedu<span class="hljs-attribute" style="box-sizing: border-box;">-VirtualBox</span>:~/swift/swiftcode$ ldd <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>/testlinux<span class="hljs-attribute" style="box-sizing: border-box;">-vdso</span><span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.1</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=></span> (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x00007ffcef3f5000</span>)libswiftCore<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=></span> /home/diveinedu/swift/swift<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">-</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2.2</span><span class="hljs-attribute" style="box-sizing: border-box;">-SNAPSHOT</span><span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">-</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2015</span><span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">-</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12</span><span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">-</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">01</span><span class="hljs-attribute" style="box-sizing: border-box;">-b</span><span class="hljs-attribute" style="box-sizing: border-box;">-ubuntu15</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.10</span>/usr/lib/swift/linux/libswiftCore<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x00007f1cd2f75000</span>)libstdc<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">++</span><span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.6</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=></span> /usr/lib/x86_64<span class="hljs-attribute" style="box-sizing: border-box;">-linux</span><span class="hljs-attribute" style="box-sizing: border-box;">-gnu</span>/libstdc<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">++</span><span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.6</span> (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x00007f1cd2bdd000</span>)libm<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.6</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=></span> /lib/x86_64<span class="hljs-attribute" style="box-sizing: border-box;">-linux</span><span class="hljs-attribute" style="box-sizing: border-box;">-gnu</span>/libm<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.6</span> (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x00007f1cd28d5000</span>)libgcc_s<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.1</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=></span> /lib/x86_64<span class="hljs-attribute" style="box-sizing: border-box;">-linux</span><span class="hljs-attribute" style="box-sizing: border-box;">-gnu</span>/libgcc_s<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.1</span> (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x00007f1cd26be000</span>)libc<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.6</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=></span> /lib/x86_64<span class="hljs-attribute" style="box-sizing: border-box;">-linux</span><span class="hljs-attribute" style="box-sizing: border-box;">-gnu</span>/libc<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.6</span> (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x00007f1cd22f3000</span>)libpthread<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.0</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=></span> /lib/x86_64<span class="hljs-attribute" style="box-sizing: border-box;">-linux</span><span class="hljs-attribute" style="box-sizing: border-box;">-gnu</span>/libpthread<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.0</span> (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x00007f1cd20d5000</span>)libdl<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.2</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=></span> /lib/x86_64<span class="hljs-attribute" style="box-sizing: border-box;">-linux</span><span class="hljs-attribute" style="box-sizing: border-box;">-gnu</span>/libdl<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.2</span> (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x00007f1cd1ed1000</span>)libicuuc<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.55</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=></span> /usr/lib/x86_64<span class="hljs-attribute" style="box-sizing: border-box;">-linux</span><span class="hljs-attribute" style="box-sizing: border-box;">-gnu</span>/libicuuc<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.55</span> (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x00007f1cd1b3c000</span>)libicui18n<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.55</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=></span> /usr/lib/x86_64<span class="hljs-attribute" style="box-sizing: border-box;">-linux</span><span class="hljs-attribute" style="box-sizing: border-box;">-gnu</span>/libicui18n<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.55</span> (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x00007f1cd16d9000</span>)libbsd<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.0</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=></span> /lib/x86_64<span class="hljs-attribute" style="box-sizing: border-box;">-linux</span><span class="hljs-attribute" style="box-sizing: border-box;">-gnu</span>/libbsd<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.0</span> (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x00007f1cd14c9000</span>)/lib64/ld<span class="hljs-attribute" style="box-sizing: border-box;">-linux</span><span class="hljs-attribute" style="box-sizing: border-box;">-x86</span><span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">-</span><span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">64.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.2</span> (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x0000556e488b7000</span>)libicudata<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.55</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=></span> /usr/lib/x86_64<span class="hljs-attribute" style="box-sizing: border-box;">-linux</span><span class="hljs-attribute" style="box-sizing: border-box;">-gnu</span>/libicudata<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>so<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">.55</span> (<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x00007f1ccfa11000</span>)</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">1</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">2</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">3</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">4</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">5</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">6</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">7</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">8</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">9</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">10</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">11</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">12</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">13</span></li><li style="box-sizing: border-box; padding: 0px 5px;"><span style="font-size:18px;">14</span></li></ul>

細心的讀者會發現好像不見main函數或者main相關的函數，程序照樣可以運行，不管是腳本還是編譯成二進制可執行文件,這個我以后再細說了。

轉自：http://blog.csdn.net/diveinedu/article/details/50214901

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