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added redirecting page

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git-svn-id: svn+ssh://atelier.inf.usi.ch/home/bevilj/group-1@82 a672b425-5310-4d7a-af5c-997e18724b81
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rasicd 2018-11-10 11:55:16 +00:00
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<!DOCTYPE html>
<html>
<head>
</head>
<body>
<h3>Redirecting Outputs</h3>
<p>First of all, to redirect a certain output of the command-line we have to use the symbol ">".</p>
<p>Even in this case, we will use a file named "Hello", in which we want to move a certain output, like "Sun".</p>
<hr>
<p>$ echo Sun > Hello </p>
<p>So if we copy the the file on our command-line, the output will be the following:</p>
<p>$ cat Hello<br>
Sun</p>
<hr>
<br>
<p>If we want to move a certain output to an existing file, we just have to use twice the ">" symbol.</p>
<hr>
<p>$ echo Bright >> Hello</p>
<p>$ cat Hello<br>
Sun<br>
Bright</p>
<hr>
<br>
<h3>Redirecting Inputs</h3>
<p>To redirect an input from a file for a command, you have to use symbol "<".<br>
In fact, it's not useful, as the result that obtain is just the content of the file.</p>
<p>Redirecting inputs becomes useful when it comes to chaining, so let's see it.<p/>
<h3>Chaining</h3>