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31 lines
1.7 KiB
HTML
31 lines
1.7 KiB
HTML
<h1 id="whatis">whatis</h1>
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<p>查询一个命令执行什么功能</p>
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<h2 id="补充说明">补充说明</h2>
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<p><strong>whatis命令</strong> 是用于查询一个命令执行什么功能，并将查询结果打印到终端上。</p>
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<p>whatis命令在用<code>catman -w</code>命令创建的数据库中查找command参数指定的命令、系统调用、库函数或特殊文件名。whatis命令显示手册部分的页眉行。然后可以发出man命令以获取附加的信息。whatis命令等同于使用<code>man -f</code>命令。</p>
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<h3 id="语法">语法</h3>
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<pre><code class="language-bash">whatis</code></pre>
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<h3 id="实例">实例</h3>
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<pre><code class="language-bash">[root@localhost ~]# whatis ls
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ls (1) - list directory contents
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ls (1p) - list directory contents
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[root@localhost ~]# whatis cp
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cp (1) - copy files and directories
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cp (1p) - copy files
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[root@localhost ~]# whatis chown
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chown (1) - change file owner and group
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chown (1p) - change the file ownership
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chown (2) - change ownership of a file
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chown (3p) - change owner and group of a file
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[root@localhost ~]# whatis man
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man (1) - format and display the on-line manual pages
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man (1p) - display system documentation
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man (7) - macros to format man pages
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man (rpm) - A set of documentation tools: man, apropos and whatis.
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man-pages (rpm) - Man (manual) pages from the Linux Documentation Project.
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man.config [man] (5) - configuration data for man</code></pre>
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<!-- Linux命令行搜索引擎：https://jaywcjlove.github.io/linux-command/ -->
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