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{{Admon/caution|DO NOT USE THIS VERSION OF THE LAB. This page will no longer be updated.|'''New version here:''' https://seneca-ictoer.github.io/ULI101/A-Tutorials/tutorial1<br />'''Andrew's students please go here:''' http://wiki.littlesvr.ca/wiki/OPS145_Lab_1}}=LEARNING ABOUT USING YOUR MATRIX SERVER ACCOUNT=<br>===Main Objectives of this Practice Tutorial===* Learn how to access your '''Matrix''' server account (from home and/or from Seneca computer lab).* Learn several ways to '''exit''' your Matrix Linux Account session.:* Understand the purpose of the '''Matrix serverLinux command structure''' and the <u>how to get '''help'''advantagewith Linux command usage.* Become efficient with '''</u> of combining Linux servers to form a command line editing''' by using '''clustershort-cut keys'''. :* List the steps to connect Issue a '''checking program''' (i.e. ''Shell Script'') to '''confirm''' that you accessed your Matrix server account in the <u>.* Perform '''computer labs</u> at Seneca CollegeLINUX PRACTICE QUESTIONS'''for additional practice.
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|colspan="2" |Course Notes'''Slides:'''<ul><li>Week 1 Lecture 1 Notes:<br>[https://ictwiki.cdot.senecacollege.ca/~uli101/notesslides/Week01ULI101-1.1.pdf PDF] | [https://ictwiki.cdot.senecacollege.ca/~uli101/notesslides/Week01ULI101-1.1.pptx PPTX]</li></ulli>TutorialsWeek 1 Lecture 2 Notes:<ul><libr>[https://wiki.cdot.senecacollege.ca/uli101/slides/ULI101-1.2.pdf PDF] | [HOWTOhttps: Access Your Matrix Account]//wiki.cdot.senecacollege.ca/uli101/slides/ULI101-1.2.pptx PPTX]<br></li></ul>'''Tutorials:'''<ul><li>[httphttps://czegelwiki.comcdot.senecacollege.ca/senecawiki/uli101/lectures/Lecture1.html Les Czegel's Week 1 Notes (HTML)Tutorial_1:_Using_Your_Matrix_Server_Account#INVESTIGATION_1:_ACCESSING_YOUR_MATRIX_LINUX_ACCOUNT HOWTO: Access Your Matrix Account]</li></ul>'''Windows SSH client Software:'''<ul><li>[http://www.sfsu.edu/ftp/win/ssh/SSHSecureShellClient-3.2.9.exe SSH/SFTP]</li><li>[httphttps://thewww.chiark.earthgreenend.liorg.uk/%7Esgtatham~sgtatham/putty/latest/x86/putty.exe html Putty]</li><li>[https://www.bitvise.com/ssh-client-download Bitvise SSH Client]</li><li>[https://mobaxterm.mobatek.net/download-home-edition.html MovaXterm]</li></ul>
| style="padding-left:15px;" |Logging Out of '''Matrix ServerAccount Access:'''
*[https://ss64.com/bash/logout.html logout , exit]<br>
*[https://www.quora.com/What-is-the-difference-between-typing-Ctrl+C-and-Ctrl+D-in-the-Linux-terminal <ctrl><d>]*[http://man7.org/linux/man-pages/man1/passwd.1.html passwd]<br>Shell '''Command Line Editing:'''
*[https://www.ostechnix.com/list-useful-bash-keyboard-shortcuts/ Bash Shell Shortcut Keys]<br>
| style="padding-left:15px;"|'''General Linux Commands:'''
*[http://man7.org/linux/man-pages/man1/pwd.1.html pwd]<br>
*[http://man7.org/linux/man-pages/man1/cd.1p.html cd]<br>
*[http://man7.org/linux/man-pages/man1/who.1.html who] , [http://man7.org/linux/man-pages/man1/w.1.html w]<br>
*[http://man7.org/linux/man-pages/man1/whoami.1.html whoami ,who am i]<br>
*[http://man7.org/linux/man-pages/man1/clear.1.html clear , <ctrl><l>]<br>
|colspan="1" style="padding-left:15px;" width="30%"|'''Brauer Instructional Videos:'''<ul><li>[https://www.youtube.com/watch?v=L5RcOngDV_o Connecting to Matrix Using SSH Client, and Running UBUNTU Within Windows 10]<br><br></li><li>[https://www.youtube.com/watch?v=3wZmZOKLllk&list=PLU1b1f-2Oe90TuYfifnWulINjMv_Wr16N&index=2 Linux File System, Basic Navigation (ls, cd, pwd, tree), Absolute and Relative Paths]</li></ul>
|colspan="1" style="padding-left:15px;" width="30%"|Brauer Instructional Videos:<ul><li>[https://www.youtube.com/watch?v=BEH6i_BKOBo&list=PLU1b1f-2Oe90TuYfifnWulINjMv_Wr16N&index=2&t=0s Connecting to Matrix Using SSH Client, Starting the Assignments, and Running UBUNTU Within Windows 10]</li><li>[https://www.youtube.com/watch?v=3wZmZOKLllk&list=PLU1b1f-2Oe90TuYfifnWulINjMv_Wr16N&index=2 Linux File System, Basic Navigation (ls, cd, pwd, tree), Absolute and Relative Paths]</li></ul>}
===Purpose of Having a Your Student Account on Matrix Account===
While attending Seneca College, you will be using many different computer systems to perform various operations.
Some of these servers include:
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| style="padding-left:0px;width:10%" |'''mylearn.senecacollege.ca'''| style="padding-left:15px;width:65%" |Learning Content Management System (''Link to Resources'' / ''Student Grades / Notes / Online Quizzes) |-| style="padding-left:0px;width:10%" |''/ 'ict.senecacollege.ca'Online Quizzes''| style="padding-left:15px;width:65%" |Main ICT Webserver)
|-
| style="padding-left:0px;width:10%" |'''wiki.cdot.senecacollege.ca'''
| style="padding-left:15px;width:65%" |Course WIKIs for Seneca College Students''Lecture Notes'' / ''Tutorials'' (weekly, review) / ''Practice Questions'' / ''Additional Learning Resources''
|-
| style="padding-left:0px;width:10%" |'''<span style="color:blue;">matrix.senecacollege.ca</span>'''| style="padding-left:15px;width:65%" |Matrix is our Linux Account server environment used for Student Practice and Assignment submission"''hands-on practice''". Each ULI101 student has an account on this server.
|}
[[Image:cli-prompt.png|thumb|right|120px|A '''shell''' is an interface / interpreter to allow a user to communicate with the Linux computer system. ]]
Although you need to study concepts throughout this course(slides, etc.), you will also need to learn to get '''issue and memorize simple hands-on practice running Linux commands as well as more advanced Linux commands'''. This requires that you practice issuing Linux commands on a frequent basis to become more comfortable when working the Unix performing and '''Linux command-line environmentssubmitting online tutorials'''.
In Unix/Linux, a '''shell''' is simply an '''interface''' to allow a user to communicate with the Linux computer system (server). Linux shells have evolved (improved) over a period of time. You will be using the '''Bash Shell''' which is considered to be ''user-friendly''. By understanding how to issue Linux commands, you can create a file that contains Linux commands (called a '''shell script''') later in this course to automate tasks to make you a more '''productive''' Linux user and system administrator.
===Layout of the Matrix Linux Server===[[Image:matrix-layout.png|thumb|right|350px250px|The Matrix server consists of several Virtual Computers all connected together to form a '''cluster'''. A cluster '''Linux Cluster''' is a '''cost effective ''' alternative to larger servers. ]]
The '''Matrix server ''' consists of '''several Virtual Computers computers connected together''' to form a '''cluster'''. <br>A '''Linux cluster ''' is a '''cost effective ''' alternative to buying larger servers.
All registered students in this course should have access to an account on the Matrix server.<br>You will be using this account for the following reasons:
:* Issuing '''Linux commands'''
:* Becoming productive using the Linux '''command prompt''' ('''shell''')
:* Performing '''Linux Practice Tutorials'''('''11 Weekly Tutorials x 2% = 22% of your final grade'''):* Performing '''Linux AssignmentsPractice Questions''':* Performing '''Review Tutorial''' ('''38 Sections x 1% = 8% of your final grade''') ===Connecting to the Seneca Student VPN===[[Image:* Practice Issuing gp1.png|thumb|right|130px|'''Seneca Student VPN''' ]] All Seneca College students are required to connect to the '''Seneca Student VPN''' in order to be able to connect to their '''Matrix'''Linux Command Review Questionsaccount when outside of campus as a '''network security''' measure. The Seneca Student VPN uses multi-factor authentication (MFA) when logging in to verify you are who you say you are. ''<b>Multi-factor authentication</b> is an electronic authentication method in which a computer user is granted access to a website or application only after successfully presenting two or more pieces of evidence (or factors) to an authentication mechanism: knowledge (something the user and only the user knows).''Reference: https://en.wikipedia.org/wiki/Multi-factor_authentication You should have received an e-mail message with instructions on how to set up your smartphone for multi-factor authentication. If you haven't installed it yet, please do so by following the ITS instructions here: https://students.senecacollege.ca/spaces/186/it-services/wiki/view/1025/student-vpn
In the next investigation, you will learn how to '''connect''' to and '''login''' to your Matrix server account from a remote computer such as your '''home desktop computer''', '''laptop''' or '''tablet''' computer.
=INVESTIGATION 1: ACCESSING YOUR MATRIX LINUX ACCOUNT=
{{Admon/important|ATTENTION: This weekly tutorial must be completed by ''Friday at 11:59pm in Week 2'' to obtain a grade of ''2%'' towards this course.|It is essential that you complete these Weekly Tutorials fully and on time. These are your major learning tool in the course. There are no late marks.}}
In this section, you will learn how to access your Matrix Linux account by two different methods:
:* From your '''home computer''' <br>:* From a '''workstation in a Seneca College''' lab via '''MyApps''' ===METHOD 1: CONNECTING TO YOUR MATRIX ACCOUNT FROM YOUR HOME COMPUTER=== [[Image:gp1.png|thumb|right|130px|The '''Seneca Student VPN''' service must be connected.]]You will now learn a quick and simple method of connecting to your Matrix account by opening<br>a text-based '''terminal''' (in any OS) and issuing the '''ssh command'''.<br><br> '''Perform the Following Steps:''' # If you want to connect to your Matrix account from home, you MUST first connect to the Seneca Student VPN.<br>Make certain that your '''Seneca Student VPN is connected'''.<br><br>'''NOTE:''' If you haven't set this up, refer to the following link for instructions;<br>https://students.senecacollege.ca/spaces/186/it-services/wiki/view/1025/student-vpn<br><br>You only have to connect to your Seneca student VPN once during the day,<br>or while you are logged into your computer.<br><br># Determine which '''operating system''' that your computer is using.<br><br># Try connecting to your Matrix account using the instructions in the '''table''' below based on <u>workstationyour</u> '''withincurrent operating system'''.<br><br><table style="margin-left:50px;"> <tr valign="top" style="text-align:center;"> <th>'''Windows 10 (or above):'''</th> <th>'''macOS:''' </th> <th>'''Linux:''' </th> </tr> <tr> <td>*From the start menu, type '''cmd''' and launch program*In the command terminal, enter the following command:<br><span style="color:blue;font-weight:bold;font-size:.75em;">ssh senecausername@matrix.senecacollege.ca</span> </td> <td>*Click ''Launchpad'' icon, type '''terminal''' a <br>and press '''Seneca College labENTER'''*In the terminal, enter the following command:<br><span style="color:blue;font-weight:bold;font-size:.75em;">ssh senecausername@matrix.senecacollege.ca</span> </td> <td> * From the menu, choose:<br>'''Applications''' > '''System Tools''' > '''Terminal'''*In the terminal, enter the following command:<br><span style="color:blue;font-weight:bold;font-size:.75em;">ssh senecausername@matrix.senecacollege.ca</span> </td> </tr></table><ol><li value="4">When connecting securely for the '''first time''', a '''dialog box''' will appear to share a "'''public key'''" with your Matrix account in order to make your interaction between your workstation and the remote Linux server secure within the network (i.e. encrypted to prevent unauthorized access by other users)<br><br>''<b>FYI:</b> To make communications over a network '''secure''', a computer generates '''two keys''': a '''private key''' that is kept on the computer, and a '''public key''', which can be shared with other computers. Transmissions from your computer uses the private key to encrypt ('''scramble''') transmission to the remote computer, which in turn, uses the public key to decrypt (unscramble) the transmission. Likewise, the remote computer uses the public key to encrypt (scramble) transmissions and your computer uses the private key to decrypt ('''unscramble''') those transmissions.''<br><br></li><li>Type '''yes''' and press '''ENTER''' to share your public key.<br><br>Next, a '''dialog box''' will appear prompting you for your Matrix account '''password''' in order to gain entry to your Matrix account.<br>Your Matrix password is <u>ownidentical</u> computer to your Seneca password.<br><br>'''NOTE:''' As you type the password, the text may be '''hidden''' to prevent others from viewing your password<br><br></li><li>Enter your Seneca password and press '''ENTER'''<br><br></li>'''NOTE:''' If you encounter an '''error message''', this can occur for several reasons:<ol><li>You mis-spelled the '''name of the server'''</li><li>You mis-spelled your Matrix '''username''' (same username that you connect to ''my.senecacollege.ca'')</li><li>You have '''CAPS LOCK''' on by mistake (your username should be '''lowercase''' only).</li><li>You mis-spelled your '''password''' (same password that you connect to ''my.senecacollege.ca'')<br><br>If you continue to experience the same problems, click on the following link for IT service desk contact info: <br>[https://students.senecacollege.ca/spaces/190/support/wiki/view/1473/contact-its '''IT service desk'''].<br><br></li></ol><li>If you entered your password correctly, the '''Matrix Linux shell''' should appear where you can enter Linux commands.<br><br>The '''Matrix''' server has been configured to allow users to '''only interact with the Linux OS by issuing commands'''.<br>The main reason for this is to '''force students to learn how to issue Linux commands'''.<br><br></li><li>To '''exit''' your Matrix session, type the command <span style="color:blue;font-weight:bold">exit</span> followed by '''ENTER'''<br><br>'''NOTE:''' You should notice that you are returned to the original command prompt where you issued the ''ssh'' command.<br><br></li><li>Type the same command at the '''command terminal prompt''': <span style="color:blue;font-weight:bold">exit</span> followed by '''ENTER'''<br><br>'''NOTE:''' You should notice that the you are disconnected and that the original terminal window has '''withinautomatically closed''' or .<br><br></li><li>Try accessing your Matrix account, and then exiting your Matrix account several times to become familiar with this process.<br><br>You will now learn an '''alternative method'outside''to access your Matrix account (if you have an MS Windows machine)<br>by downloading and running a graphical SSH application.</li></ol><br> ===METHOD 2: CONNECTING TO YOUR MATRIX ACCOUNT FROM SENECA COMPUTER LAB=== <span style="color:red;font-weight:bold;">NOTE: This section requires you have access to a Seneca computer lab on campus.<br>If you don' t have access to a Seneca computer lab this semester, then you can skip this section</span><br><br> You can also connect to your Matrix server account in the '''Seneca CollegeComputer lab via MyApps''' .<br><br>One advantage of this method is that your are at the college; therefore, '''you do NOT have to worry about connecting to the Seneca VPN'''. Another advantage of using this method is to introduce you to a '''graphical program''' to allow you connect to your Matrix account as opposed to using the '''ssh''' command (shown in the previous section).<br>
[[Image:apps-anywhere-main-window.png|thumb|right|250px|'''MyApps''' ('''AppsAnywhere''') Main Window ]]
'''MyApps''' ('''AppsAnywhere''') is an application streaming service that lets you install software on any Seneca PC on demand. Any software application on the MyApps menu can be used on computers in classrooms, labs, and the Computing Commons.
You will now use '''MyApps ''' on your Windows workstation in your Seneca lab room to launch an application<br>to allow you to connect and login to your Matrix server account.
[[Image:apps-anywhere.png|thumb|right|250px|Several SSH applications will appear. We will use the application called '''SSH Client''' for this practice tutorial. ]]
# Start your workstation in your lab and login to your Seneca Windows account.<br><br>
# Make certain that the '''MyApps''' window is open. This window should have opened shortly after you logged into your Windows workstation. If the application windows is not open, click on the '''MyApps''' icon on the desktop to launch).<br><br>[[Image:ssh-main-window.png|thumb|right|150px|SSH Client Application Window ]]<span style="color:red;font-weight:bold;">NOTE: You may be required to validate in order to use MyApps correctly. If you see near the top of the screen "requires validation", then click on that area to connect to validate.</span><br><br># Click on the '''Search Apps ''' area located in the top right corner of the MyApps window and type the word: <span style="color:blue;font-weight:bold">ssh</span><br><br>
# Several SSH applications will appear. <br><br>'''NOTE:''' All of these applications allow you to connect to your Matrix account.<br>We will use the application called '''SSH Secure Shell Client''' for this practice tutorial.<br><br>
# Double-click on Launch the '''SSH Secure Shell Client''' application icon to launch this program.<br><br>[[Image:quick-connect-window.png|thumb|right|150px|Quick Connect Dialog Box ]]'''NOTE:''' Prior to launching the application, you can add this to your '''favourites''' which will make it faster<br>to access this application in the future.<br><br>
# The main SSH Client window will appear. Click on the '''Quick Connect''' button.<br><br>'''NOTE:''' The Connect dialog box allows the user to specify the '''server name''' and your '''account name'''<br>to allow you to connect to the server.<br><br>
# Click on the textbox labelled Hostnanme and enter the text: <span style="color:blue;font-weight:bold">matrix</span><br><br>'''NOTE:''' You can use the hostname '''matrix''' since you are located <u>inside</u> Seneca's network.<br>If you where located <u>outside</u> Seneca's network, then you would need to enter the full domain name: '''matrix.senecac.on.ca'''<br><br>[[Image:share-public-key.png|thumb|right|150px|Dialog Box to Share Public Key on Remote Server ]]
# Next, a dialog box will appear prompting you for your Matrix account password in order to gain entry to your Matrix account. Your Matrix password is identical to your Seneca password. As you type the password, the text will be blocked-out or hidden to prevent others from viewing the screen to obtain your password[[Image:ssh-authentication-response.png|thumb|right|150px|Authentication Response Dialog Box ]]<br><br>
# Enter your password and click '''OK''' or press '''ENTER'''<br><br>[[Image:ssh-login-error.png|thumb|right|150px|SSH Login Error ]]
# Click '''OK''' or press '''ENTER''' at the second '''Authentication Response ''' dialog box.<br><br>'''NOTE:''' If you encounter an '''error message''', this can occur for several reasons:<ol><li>You mis-spelled the '''name of the server'''</li><li>You mis-spelled your Matrix '''username ''' (same username that you connect to my.senecacollege.ca)</li><li>You have '''CAPS LOCK''' on by mistake (your username should be '''lowercase''' only).</li><li>You mis-spelled your '''password ''' (same password that you connect to my.senecacollege.ca)</li></ol><br>If you encountered an error logging in, issue the same steps to connect to your Matrix account,<br>but carefully check your server name, username and your password. If you continue to experience the same problems,click on the following link for IT service desk contact info: <br>you can go to the computer help [https://students.senecacollege.ca/spaces/190/support/wiki/view/1473/contact-its '''IT service desk in the learning commons to get help'''].<br><br>[[Image:ssh-shell-window.png|thumb|right|150px|Matrix Shell Command Line Interface ]]#If you entered your password correctly, the main SSH Linux shell should appear where you enter Linux commands.<br><br>The '''Matrix''' server has been configured to allow users to '''only interact with the Linux OS by issuing commands'''. There are various reasons for this, but the main 2 reasons are to '''force students to learn how to issue Linux commands''' as well as '''limitations to remote access to a graphical Linux serveserver'''r due to large number of users (students).<br><br>Later in the course, your instructor may demonstrate other ways of accessing '''graphical versions of Linux''', and how to launch a shell terminal.<br><br>[[Image:ssh-settings-window.png|thumb|right|150px|SSH Settings Dialog Box ]]
You can '''configure''' the SSH application to adjust elements such as the '''window size''' and '''text font type''' and text '''font size'''. We will be showing you how to configure your SSH Secure Shell Client, but the other applications can allow you to configure their settings.<br><br>
# You now should notice that you have customized your SSH shell terminal. You can use the settings screen to also change your background and text colours if you are interested in doing so.<br><br>
# To exit your Matrix session, type the following command and press ENTER: <span style="color:blue;font-weight:bold">exit</span><br><br>'''NOTE:''' You should notice that the colour of the text changes slightly when disconnected and you are unable to issue Linux commands from that window.<br><br>
# After you have disconnected from your account, then close the SSH Secure Shell Client application window.<br><br>
# It is recommended to repeat these steps with connecting to your Matrix account from a Seneca lab workstation until you become comfortable with the process.<br><br>
In the next sectioninvestigation, you will learn how to connect issue Linux commands from the command prompt (referred to as the "shell"), learn how to get help with Linux commands, use command-line editing short cut keys, and run a program to confirm that you connected to your Matrix server account from a different computer in order to get marks for this online tutorial. =INVESTIGATION 2: USING THE LINUX SHELL =In this investigation, you will learn how to use the Linux Shell. Topics in the section include: :* Learn the basic '''Linux command structure''' (''arguments'' and ''options''):* Learn how to get '''help''' for exampleLinux commands via the '''online manual''' (i.e. '''man''' command).:* Perform '''Basic Shell Editing''': * Issue a '''program''' to confirm that you connected to your laptop computer at Seneca College or your computer at homeMatrix account ==Linux Command Structure== The Bash shell allows you to interact with Linux by typing commands. '''The basic Linux command structure is as follows:''' <span style="font-family:courier;color:blue;font-weight:bold">command argument1 argument2 ... </span> Some Linux commands can be used as-is (e.g. '''pwd''', '''date''', '''ls''', '''cal'''), but many Linux commands can also be issued with arguments (e. In that sectiong. '''cal 2002''', '''cd /bin''', we will introduce you '''ls -l -a /bin''' ). '''What is an argument?''' An argument is used to change the other SSH application called "default behaviour of a command. Arguments come in three major forms: # A command '''option'''.#* Example: <code>-l</code># A '''file pathname'''.#* Example: <code>/etc</code># A series of characters (i.e. '''Puttytext''') that the command can use.#* Example: <code>"Hello, world."<br/code> An '''argument''' <bru>must be separated</u> from a command (and from other arguments) by whitespace (a '''SPACE''', '''MULTIPLE SPACES''' or a '''TAB''').
'''Perform the Following Steps:'''[[Image:meta-key.png|thumb|right|370px|To make '''alt-f''' key work, select '''Edit''' -> '''Settings''' -> '''Keyboard''', and select the checkbox '''Use ALT as Meta key (and Escape)'''.]]# Type the following Linux command, but DON’T press the ''ENTER'' key:<br><span style="font-family:courier;color:blue;font-weight:bold">cd /bin</span><br><br>In this section# Press the <span style="font-family:courier;color:blue;font-weight:bold">ctrl-a</span> key combination. What happens?<br><br>'''NOTE:''' To make '''alt-f''' key work when use the '''GRAPHICAL Windows SSH Client application''', select '''Edit''' -> '''Settings''' -> '''Keyboard''', and select the checkbox '''Use ALT as Meta key (and Escape)'''.<br><br># Press the <span style="font-family:courier;color:blue;font-weight:bold">alt-f</span> key combination '''two times'''<br>(OPTION+right-arrow for Mac OSx).<br><br># Press the <span style="font-family:courier;color:blue;font-weight:bold">alt-b</span> key combination '''one time'''.<br>(OPTION+left-arrow for Mac OSx).<br><br><table align="right"><tr valign="top"><td>[[Image:ctrl-b.png|thumb|right|150px|'''alt-b''' moves one word backwards for Windows OS]]</td><td>[[Image:ctrl-w.png|thumb|right|150px|'''ctrl-w''' deletes a word to <u>left</u> of the cursor.]]</td><td>[[Image:new-ls.png|thumb|right|150px|After command is deleted, then type new command and press '''ctrl-e''' to move to end of the command line.]]</td></tr></table># Press the <span style="font-family:courier;color:blue;font-weight:bold">ctrl-w</span> shortcut key. What happens?<br><br># Type the following command: <span style="font-family:courier;color:blue;font-weight:bold">ls</span><br><br># Press the <span style="font-family:courier;color:blue;font-weight:bold">ctrl-e</span> key combination<br><br>What happens?<br><br># Press the <span style="font-family:courier;color:blue;font-weight:bold">ENTER</span> key to execute the command.<br><br># Press the <span style="font-family:courier;color:blue;font-weight:bold">up arrow</span> key. What happens?<br><br># Press the <span style="font-family:courier;color:blue;font-weight:bold">ctrl-u</span> key combination. What happens?<br><br># Press the <span style="font-family:courier;color:blue;font-weight:bold">up arrow</span> key combination, and see what happens when you will learn how press <span style="font-family:courier;color:blue;font-weight:bold">BACKSPACE</span> , <span style="font-family:courier;color:blue;font-weight:bold"><ctrl><BACKSPACE></span> and <span style="font-family:courier;color:blue;font-weight:bold"><ctrl><h></span>.<br>Why is it important to know those series of key combinations?<br><br># Press the <span style="font-family:courier;color:blue;font-weight:bold">ctrl-u</span> key combination to use clear the line.<br><br># Press the <span style="font-family:courier;color:blue;font-weight:bold">ctrl-l</span> key combination. What happens? What is the Linux advantage of using '''ctrl-u''' as opposed to '''ctrl-l'''?<br><br>The Bash shortcut keys that you just learned are sufficient to perform Bash Shellediting. Topics <br>Although you are NOT required to learn other short-cut keys, here is a link to a listing in the section includecase you are interested:<br>[https:// ostechnix.com/list-useful-bash-keyboard-shortcuts/ Useful Bash Shell Keyboard Shortcuts]
'''Running a Shell Script to Check Student Online Tutorial Participation'''<table align="right"><tr valign==Part "top"><td>[[Image:script-check-1.png|thumb|right|250px|If all all check pass, then user performed can proceed.]]</td><td>[[Image: Using the Linux Shell ===script-check-2.png|thumb|right|450px|If there is a warning, then feedback is provided to user to correct and re-run checking script.]]</td></table>
NOTE:'''Perform the following steps:'''ONLINE ASSIGNMENTS ARE RETIRED AND REPLACED WITH ONLINE TUTORIALS and REVIEW QUESTIONS
= LINUX PRACTICE QUESTIONS =
The purpose of this section is to obtain '''extra practice ''' to help with your assignment #1, '''quizzes''', your '''midterm''', and your '''final ezamexam'''.
Here is a link to the MS a Word Document document of ALL of the questions displayed below but with extra room to answer on the document tosimulate a quiz:
: https://ictwiki.cdot.senecacollege.ca/~murray.saululi101/uli101files/uli101_week1_practice.docx
Your instructor may take-up these questions during class. It is up to the student to attend classes in order to obtain the answers to the following questions. Your instructor will NOT provide these answers in any other form (eg. e-mail, etc).
'''Review Questions:'''
# What is a “'''Linux Cluster'''”? What is an advantage of using a Linux cluster?
# List '''three unique server names ''' at Seneca college and briefly explain the purpose of that server. # List the steps to connect and login to your Matrix Linux server Seneca College account from a workstation in a on your '''laptop''' or your '''home computer lab at Seneca College'''.# List the steps alternative methods to connect and login to your Matrix Seneca College account on your home , including if you have an '''Apple Mac''' computeror are running the '''Linux''' operating system.
# List 3 unique ways to '''log-out''' of your Matrix account (not including closing the SSH window or application).
Author: Murray Saul
License: LGPL version 3
Link: https://www.gnu.org/licenses/lgpl.html
_________________________________________________________________________________
[[Category:ULI101]]