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How to connect USB Serial Console Cable to Linux

The following guide will walk you through on setting up USB Serial Console Cable on a Linux via command line.

First of all, make sure you have a program called Minicom installed.

I will be using Ubuntu flavored Operating System for demonstration purposes.

apt-get install minicom

Then you need to connect the USB Serial adapter and find out which serial port is it connected to.

dmesg | grep USB

You will see something similar to this output.

[    6.804403] usb 1-1.3: pl2303 converter now attached to ttyUSB0

Make sure you chmod 777 /dev/ttyUSB0 so minicom will allow you to save the config.

Open up minicom by running the command minicom -s and select Serial port setup

Reflect the output you saw from dmesg and set it to the Serial Device by pressing AE > C

A – Serial Device : /dev/ttyUSB0
E – Bps/Par/Bits : 9600 8N1

Please see the following screenshot for more info.

minicom-config

Then Save setup as dfl then exit.

You should be able to login via the console port like the following…

Welcome to minicom 2.6.1

OPTIONS: I18n                                                                
Compiled on Apr 28 2012, 19:24:31.                                           
Port /dev/ttyUSB0                                                            
                                                                             
Press CTRL-A Z for help on special keys                                                                                            
                                                                                                                                   
                                                                                                                                   
iNET (ttyu0)                                                                                                                       
                                                                                                                                   
login:                                                                       
iNET (ttyu0)                                                                 
                                        
login: nish                             
Password:                               
                                        
--- JUNOS 10.1R1.8 built 2010-02-12 18:31:54 UTC
nish@iNET>                              

If you wish to exit Minicom, use the command Ctrl A then Z then X.

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