40 lines
1.2 KiB
HTML
40 lines
1.2 KiB
HTML
---
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layout: page
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category: Intermediate commands
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category-page: intermediate
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tags: cat content file show concatenate
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author: Fabiano Fenini
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title: cat
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---
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<p>The <code>cat</code> command can be easily associated to the word “concatenation” but
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it doesn’t have that only function: in fact, cat command gives us the possibility to create
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files and also to display them.
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<br>
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The name stands for <i>catenate</i>.
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<h2>Usage</h2>
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The default cat command syntax is:
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<pre>
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cat [flags] [--] [file1] [file2] [file...]
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</pre>
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Where [flags] are the cat flags, read below for more info, [--] indacates that the
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following parameters won't be considered as flags, while the file parameters indicates
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the names of one or more files to concatenate.
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Between the names of two files is possible to use the shell redirection symbol ">",
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in order to redirect the output to the file considered.
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<h2>Flags</h2>
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Here are some of the most common cat flags:
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<ul>
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<li> <b>-n</b>: Display the line numbers of a file </li>
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<li> <b>-e</b>: Display "$" at the end of the line and also where there is a gap between paragraphs </li>
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<li> <b>-T</b>: Display TAB characters </li>
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</ul>
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</p>
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