---
layout: page
author: Domenico Votta
category-page: advanced
category-title: Advanced commands
tags: remove column
title: colrm
---
The <code>colrm</code>  is a command that removes the column that you indicate <br>

Here we have a file named <code>example.txt</code> that contains two lines to test this command:<br>

<code>example.txt</code>
{% highlight bash linenos %}
123456789
abcdefghi
{% endhighlight %}

The syntax command is:
<pre> colrm [first] [last]</pre>

<pre>
colrm 4 < example.txt
123
abc
</pre>
<p>How you can see, if I don't indicate the last column, the command removes all the colums starting from 4 included. </p>
<pre>
colrm 2 4 < example.txt
156789
aefghi
</pre>
<p>Here, how you can see, the command has removed not all the columns, but only the colums that starting at 2 and ending at 4, included. </p>