https://codelog.me/zh/categories/shell/Recent content in Shell on Code LogHugozh-CNThu, 23 Jan 2014 23:53:51 +0800https://codelog.me/zh/posts/sed-quick-start/Thu, 23 Jan 2014 23:53:51 +0800https://codelog.me/zh/posts/sed-quick-start/<p>sed与awk堪称文本流处理神器，本文提供了sed命令的快速入门参考：</p> <h1 id="删除命令">删除命令</h1> <h3 id="删除第n行">删除第N行</h3> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-shell" data-lang="shell"><span style="display:flex;"><span>sed 3d abc.txt </span></span></code></pre></div><p>该命令会删除第三行数据</p> <h3 id="隔行删除">隔行删除</h3> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-shell" data-lang="shell"><span style="display:flex;"><span> sed <span style="color:#e6db74">&#39;1~2d&#39;</span> abc.txt </span></span><span style="display:flex;"><span> sed <span style="color:#e6db74">&#39;2~2d&#39;</span> abc.txt </span></span></code></pre></div><p>第一个命令会删除奇数行数据，第二个命令会删除偶数行数据。</p>