Linux中文本处理工具之cut命令详解

风车里的人 發表於 2023-11-29 00:00:00

<p>
<span><strong>前言</strong></span></p>
<p>
Cut 输入字符中指定的字段或指定的范围。若处理的是字段，则定界符隔开的即为各字段，而输出时字段也以给定的定界符隔开。默认的定界符为制表字符（TAB）。下面来看看详细的介绍吧。</p>
<p>
<span><strong>一、cut实战演练</strong></span></p>
<p>
<strong>cut.txt文件</strong></p>
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<code class="bash plain">root,x,0,0,root,</code><code class="bash plain">/root</code><code class="bash plain">,</code><code class="bash plain">/bin/bash</code>
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<div class="line number2 index1 alt1">
<code class="bash plain">daemon,x,1,1,daemon,</code><code class="bash plain">/usr/sbin</code><code class="bash plain">,</code><code class="bash plain">/usr/sbin/nologin</code>
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<code class="bash plain">bin,x,2,2,bin,</code><code class="bash plain">/bin</code><code class="bash plain">,</code><code class="bash plain">/usr/sbin/nologin</code>
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<div class="line number4 index3 alt1">
<code class="bash plain">sys,x,3,3,sys,</code><code class="bash plain">/dev</code><code class="bash plain">,</code><code class="bash plain">/usr/sbin/nologin</code>
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<p>
<strong>实战演练</strong></p>
<p>
输出每一行的第二个字节内容</p>
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<code class="bash plain">> root@wing:~</code><code class="bash plain">/wing</code> <code class="bash comments"># cut -b 2 cut.txt </code>
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<code class="bash plain">> o</code>
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<code class="bash plain">> a</code>
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<code class="bash plain">> i</code>
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<code class="bash plain">> y</code>
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<code class="bash plain">></code>
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<code class="bash plain">></code>
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输出每一行的第二个字符内容</p>
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<code class="bash plain">> root@wing:~</code><code class="bash plain">/wing</code> <code class="bash comments"># cut -c 2 cut.txt </code>
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<div class="line number2 index1 alt1">
<code class="bash plain">> o</code>
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<code class="bash plain">> a</code>
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<code class="bash plain">> i</code>
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<code class="bash plain">> y</code>
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<code class="bash plain">></code>
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<code class="bash plain">></code>
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输出每一行第一列内容</p>
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<code class="bash plain">> root@wing:~</code><code class="bash plain">/wing</code> <code class="bash comments"># cut -d , -f 1 cut.txt </code>
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<code class="bash plain">> root</code>
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<code class="bash plain">> daemon</code>
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<code class="bash plain">> bin</code>
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<code class="bash plain">> sys</code>
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<code class="bash plain">></code>
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<code class="bash plain">></code>
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输出每一行第一、二列内容</p>
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<code class="bash plain">> root@wing:~</code><code class="bash plain">/wing</code> <code class="bash comments"># cut -d , -f 1,2 cut.txt </code>
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<code class="bash plain">> root,x</code>
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<code class="bash plain">> daemon,x</code>
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<code class="bash plain">> bin,x</code>
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<code class="bash plain">> sys,x</code>
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<code class="bash plain">></code>
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<div class="codetool" id="codetool">
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<p>
<span><strong>二、cut常用参数详解</strong></span></p>
<p>
-b,–bytes</p>
<p>
选取字节的列表，即选取每行的第N个字节。</p>
<p>
-c,–characters</p>
<p>
选取字符的列表，即选取每个的第N个字符。(英文字符下与-b没有区别，中文字符下，一个中文占据2-3个字节，所以存在中文的时候更倾向于用-c)。</p>
<p>
-d,–delimiter</p>
<p>
分隔符，默认为TAB。</p>
<p>
-f,–field</p>
<p>
选取列的列表，即选取每行的第N列。</p>
<p>
<span><strong>总结</strong></span></p>
<p>
以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作能带来一定的帮助，如果有疑问大家可以留言交流，谢谢大家对的支持。</p>

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Linux中文本处理工具之cut命令详解