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<!DOCTYPE html>
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<p><a href="https://github.com/koalaman/shellcheck" target="_blank" rel="noopener">Shellcheck</a> 是一套用來檢查與分析 Shell script 的自動化檢查工具，<br>除了檢查撰寫風格以外，它還能夠找出 Shell script 裡有哪些指令可能存在執行風險，<br>並且提供對應的修改方式協助改善 Shell script 的品質。</p>
<p>Shellcheck 的使用方法很簡單，直接參考它本身的文件就很清楚，<br>而且作者有提供方便的 <a href="https://hub.docker.com/r/koalaman/shellcheck/" target="_blank" rel="noopener">docker image</a> 可以直接使用。</p>
<p>當 Shellcheck 發現 shell script 有任何風險時，<br>它除了顯示是哪一段指令會造成風險以外，<br>同時也會提供對應的檢查規範與文件網址，<br>讓你能夠進一步瞭解風險原因與修改方法。</p>
<p>目前 Shellcheck 支援的檢查規範有 SC1000 ~ SC2253 ，<br>大約 340 個，簡單列舉幾個常見情境：</p>
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<a class="has-link-black-ter" href="/20190501-how-to-install-tig-and-ncurses-without-root-permission/">How to Install Tig and Ncurses without root permission</a>
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<p>本文主要用來記錄如何在不使用 root 權限的前提下，在自己的家目錄裡安裝 <a href="https://www.gnu.org/software/ncurses/" title="GNU Ncurses" target="_blank" rel="noopener">GNU Ncurses</a> 函式並編譯 <a href="https://github.com/jonas/tig" title="Text-mode interface for Git" target="_blank" rel="noopener">Tig</a> 指令工具，讓編譯好的 <a href="https://github.com/jonas/tig" title="Text-mode interface for Git" target="_blank" rel="noopener">Tig</a> 指令能夠正常顯示中文。</p>
<h3 id="Tig-Text-mode-interface-for-Git"><a href="#Tig-Text-mode-interface-for-Git" class="headerlink" title="Tig: Text-mode interface for Git"></a><a href="https://github.com/jonas/tig" title="Text-mode interface for Git" target="_blank" rel="noopener">Tig: Text-mode interface for Git</a></h3><p><a href="https://github.com/jonas/tig" title="Text-mode interface for Git" target="_blank" rel="noopener">Tig</a> 是個非常實用的 command line 工具，它提供一個 Text-mode Interface (TUI) 讓你能夠在 Terminal 裡透過類似 GUI 的介面進行操作與瀏覽 Git Repository，安裝方式在<a href="https://jonas.github.io/tig/INSTALL.html" title="Tig Installation" target="_blank" rel="noopener">官方文件</a>裡寫得很清楚也很簡單，但是當你沒有 root 權限去使用 apt 之類的套件管理工具時就變得相對麻煩，不僅需要下載 <a href="https://github.com/jonas/tig" title="Text-mode interface for Git" target="_blank" rel="noopener">Tig</a> 原始碼來重新編譯為指令，且編譯環境還必須事先安裝好 <a href="https://www.gnu.org/software/ncurses/" title="GNU Ncurses" target="_blank" rel="noopener">GNU Ncurses</a> 函式庫，才能讓編譯好的 <a href="https://github.com/jonas/tig" title="Text-mode interface for Git" target="_blank" rel="noopener">Tig</a> 指令支援正常顯示中文！</p>
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