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---
layout: page
author: Agostino Monti
category-page: advanced
category-title: Advanced commands
tags: filie coluns analize
title: paste
---
The <code>paste</code> command is used to join files horizontally
(parallel merging) by outputting lines consisting of the sequentially corresponding
lines of each file specified, separated by tabs, to the standard output.<br>
Once involved, <code>paste</code> will read all its file arguments. For each corresponding line,
paste will append the contents of each file at that line to its output along with a tab.
When it has completed its operation for the last file, <code>paste</code> will output a newline
character and move on to the next line.
<pre>
paste [flags] [file1] [file2] ...
</pre>
<h3>Flags</h3>
<ul>
<li><code>-d</code> delimiters, which specifies a list of delimiters to be used instead of tabs
for separating consecutive values on a single line. Each delimiter is used in turn;
when the list has been exhausted, paste begins again at the first delimiter.
<pre>
paste -d "|" file1.txt file2.txt
paste -d "|," file1.txt file2.txt</pre>
</li>
<li><code>-s</code>, which causes paste to append the data in serial rather than in parallel;
that is, in a horizontal rather than vertical fashion.
</li>
</ul>