user29675: EDIT
I am using an Genuino Uno & Yun Shield
I am a complete arduino noob
I am creating something where I need a process to execute a command on my yun shield but when I use Bridge.begin(); It scrambles all text to something like this 

.ÿš2%š%šr%š%š%šr%š2%š2%º%š%š%š2%º2%º2%ºr%š2%º2%šr%šr%š%š2%šþøøþøøþúøøýýøþþþýþþøøøøúýøþÿøøþþøúýþúøøøþøýøþýúøþþøüþþøýþþøýøúø

and it just keeps adding characters. if I don't use Bridge.begin(); then it correctly prints.
I wrote this short program to replicate the bug:
#include <Process.h>

void setup() {
// put your setup code here, to run once:
// Start the bridge and serial port.
Bridge.begin();
Serial.begin(9600);

 while(!Serial){

 }
}

void loop() {
// put your main code here, to run repeatedly:
Serial.println("test");
}

So this will give the scrambled text and when you remove the Bridge.begin(); it will show the text but I really need to use a Process in my other program so as I understand I need Bridge.

user4143: Bridge and Serial both use the same pins. You cannot use them both.
Bridge runs at a much higher baud rate (230400 IIRC) than Serial, which is why it all messes up.

29675: <p><strong>EDIT</strong>
I am using an Genuino Uno &amp; Yun Shield</p>

<p>I am a complete arduino noob</p>

<p>I am creating something where I need a process to execute a command on my yun shield but when I use <code>Bridge.begin();</code> It scrambles all text to something like this </p>

<blockquote>
  <p>.ÿš2%š%šr%š%š%šr%š2%š2%º%š%š%š2%º2%º2%ºr%š2%º2%šr%šr%š%š2%šþøøþøøþúøøýýøþþþýþþøøøøúýøþÿøøþþøúýþúøøøþøýøþýúøþþøüþþøýþþøýøúø</p>
</blockquote>

<p>and it just keeps adding characters. if I don't use <code>Bridge.begin();</code> then it correctly prints.</p>

<p>I wrote this short program to replicate the bug:</p>

<pre><code>#include &lt;Process.h&gt;

void setup() {
// put your setup code here, to run once:
// Start the bridge and serial port.
Bridge.begin();
Serial.begin(9600);

 while(!Serial){

 }
}

void loop() {
// put your main code here, to run repeatedly:
Serial.println("test");
}
</code></pre>

<p>So this will give the scrambled text and when you remove the <code>Bridge.begin();</code> it will show the text but I really need to use a Process in my other program so as I understand I need Bridge.</p>
 4143: <p><code>Bridge</code> and <code>Serial</code> both use the same pins. You cannot use them both.</p>

<p><code>Bridge</code> runs at a much higher baud rate (230400 IIRC) than <code>Serial</code>, which is why it all messes up.</p>
