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<!DOCTYPE html>
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<head>
<title>set_motd</title>
<meta charset="utf-8">
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<h1>set_motd</h1>
<h2>Purpose of the exercise</h2>
<p>How to create user? How to edit a file? How to connect to anoter computer using ssh? How to find out the computer IP address?</p>
<h2>Brief description</h2>
<p>Set up two virtual machines, set MOTD. Connect using ssh.</p>
<h2>How To</h2>
<ol>
<li>Create two virtual machines, Student(student-console) and Test(SimpleArbiterDhcpGw) <br> <img src="../images/img4.png" alt="no img"></li>
<li>Change the network settings to both virtual machines. SimpleArbiterDhcpGw: Adapter 1 set it to NAT for internet access, Adapter 2 to internal network for local network.
Student: Adapter1 set it to "internal-network" so it is in the same domestic network as SimpleArbiterDhcpGw. <br> <img src="../images/img1.png" alt="no img"> <br> <img src="../images/img2.png" alt="no img"> <br> <img src="../images/img3.png" alt="no img"></li>
<li>Login on <b>Student</b> <br> <img src="../images/img5.png" alt="no img"></li>
<li>On Student(student-console) create a new user (with "adduser username", as the task demands of you ( eg. marjankoral19 ), with a custom password. <br> <img src="../images/img6.png" alt="no img"></li>
<li>In Student(student-console) open interfaces file ( nano /etc/network/interfaces ) and set the IP <br>
<h2>How to use the <strong>nano</strong> text editor </h2>
<p>
1.) Open the nano editor with the command nano, which is followed by the path and name of the file. Example: <strong>nano /etc/myfile</strong>. If the file doesn't exist, the file will be created by the editor.<br />
2.) To move in the editor, we use the arrow keys, <strong>backspace</strong> is used for deleting. <br />
3.) To save a file press the combination of keys <strong>ctrl</strong> + <strong>O</strong>. <br />
4.) To exit the editor press the combination of keys <strong>ctrl</strong> + <strong>X</strong>. The editor will ask you, if you really want to exit, you can answer with <strong>y</strong> (yes ) or with <strong>n</strong> ( no ). <br />
5.) To cut a line press the combination of keys <strong>ctrl</strong> + <strong>K</strong>. <br />
6.) To paste a line press the combination of keys <strong>ctrl</strong> + <strong>U</strong>. <br />
7.) To search over a document press the combination of keys <strong>ctrl</strong> + <strong>W</strong> and then enter the search string.
</p> <img src="../images/img7.png" alt="no img" ></li>
<li>We can check which interface belongs to which adapter in Virtual-box with MAC address. Run ifconfig command and compare the HWaddr value with the value in the Virtual-box ( settings => network => adapter => Mac address ) <br /><img src="../images/slika4.png" alt="no img" /><img src="../images/slika3.png" alt="no img"/></li>
<li>Then edit the /etc/motd (eg. with nano editor like this: "nano /etc/motd"), file with the specified string. (eg. "Not for Human consumption" ) <br> <img src="../images/img8.png" alt="no img"> </li>
<li>For testing, login with the test user into Test(SimpleArbiterDhcpGw) <br> <img src="../images/img9.png" alt="no img"></li>
<li>Then connect to the Student with ssh, using the user marjankoral19 - ssh marjankoral@ip. <br> <img src="../images/img10.png" alt="no img"></li>
<li>If the login was successful, the Message of the day should apear.</li>
<li>To run Kpov_judge, login onto SimpleArbiterDhcpGw, find and run the file test_task.py ( with ./test_task.py as all other scripts )<br /> <img src="../images/img11.png" alt="no img"></li>
<li>A window appears as we can see on the image above, then press Enter, enter your username ( eg. dr6784@student.uni-lj.si ), password, task name (eg. 01-preparation-set_motd), enter the string we should get in motd, enter the username and password of a user on Student(student-console)(eg. marjankoral19), the IP of Student(student-console), and after a brief moment we should get the result. <img src="../images/img12.png" alt="no img"> </li>
</ol>
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