https://bigshans.github.io/tags/sed/ Recent content in Sed on Bigshans' Blog Hugo en bigshans Wed, 16 Feb 2022 17:11:39 +0800 https://bigshans.github.io/post/sed-quickly-note/ Wed, 16 Feb 2022 17:11:39 +0800 https://bigshans.github.io/post/sed-quickly-note/ <p><code>sed</code> 命令是一个强大的、基于行的文本处理命令，它仍被广泛使用。 <code>sed</code> 借助正则表达式对文本的某行进行增删改查。</p> <h2 id="基本格式">基本格式</h2> <pre><code>sed [options] {script} [input file] </code></pre> <h2 id="增">增</h2> <pre><code class="language-shell">cat pets.txt # output: # This is my cat # my cat's name is betty # This is your dog # my dog's name is frank # This is my fish # my fish's name is george # This is my goat # my goat's name is adam sed &quot;/fish/a I like fish too&quot; pets.txt # output: # This is my cat # my cat's name is betty # This is your dog # my dog's name is frank # This is my fish # I like fish too # my fish's name is george # I like fish too # This is my goat # my goat's name is adam </code></pre> <p>我们可以看到文本会被添加到匹配行的后面，如果想要将文本插入到行前面，则使用 <code>a</code> 参数。</p>