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Tutorial2: Unix / Linux File Management

19 bytes added, 01:29, 24 September 2022

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=UNIX / LINUX FILE MANAGEMENT CONCEPTS=

{{Admon/important|IMPORTANT: The due date for this tutorial has been extended to Monday, September 26, 2022 at 11:59pm EST.|This extension is for all sections of ULI101.}}

===Main Objectives of this Practice Tutorial===

|- valign="top" style="padding-left:15px;"

|colspan="1" |'''Slides:'''<ul><li>Week 2 Lecture 1 Notes: [https://github.com/ULI101/slides/raw/main/ULI101-2.1.pdf PDF] | [https://~~ict~~github.com/ULI101/slides/raw/main/ULI101-2.~~senecacollege~~1.capptx PPTX]</li><li>Week 2 Lecture 2 Notes: [https://~~~murray~~github.~~saul~~com/ULI101/slides/~~uli101~~raw/main/ULI101-~~Week2~~2.2.pdf PDF] | [https://~~ict~~github.~~senecacollege.ca~~com/ULI101/slides/~~~murray.saul~~raw/~~uli101~~main/ULI101-~~Week2~~2.2.pptx PPTX]</li></ul>'''Tutorials:'''<ul><li>[http://www.cheat-sheets.org/saved-copy/Nano_Cheat_Sheet.pdf Nano Reference Sheet (PDF)]</li><li>[https://www.smashingmagazine.com/2010/05/vi-editor-linux-terminal-cheat-sheet-pdf Vi Reference Sheet (PDF)]</li><li>[http://czegel.com/seneca/uli101/lectures/Lecture2.html Les Czegel's Week 2 Notes (HTML)]</li></ul>

| style="padding-left:15px;" |'''File Management:'''

*[http://man7.org/linux/man-pages/man1/pwd.1.html pwd]

*[http://man7.org/linux/man-pages/man1/cd.1p.html cd]

*[http://man7.org/linux/man-pages/man1/rm.1.html rm] , [http://man7.org/linux/man-pages/man1/rm.1.html rm -r]

| style="padding-left:15px;"|'''Text Editors / File Content:'''

*[http://man7.org/linux/man-pages/man1/vi.1p.html vi] , *[https://linux.die.net/man/1/nano nano]

*[http://man7.org/linux/man-pages/man1/cat.1.html cat]

*[http://linuxcommand.org/lc3_man_pages/grep1.html grep]

|colspan="1" style="padding-left:15px;" width="30%"|'''Brauer Instructional Videos:'''<ul><li>[https://www.youtube.com/watch?v=UfAFAipked0&list=PLU1b1f-2Oe90TuYfifnWulINjMv_Wr16N&index=3 Basic File Actions (touch, ls -l, cp, cp -r, mv, mkdir, mkdir -p, rm, rmdir, rm -r)]</ul>

|}

=INVESTIGATION 1: CREATING & MANAGING DIRECTORIES=

'''ATTENTION''': ~~Depending on your ULI101 instructor, you may~~ This online tutorial will be required to complete this tutorial for '''marks''' in this course. Please refer to your instructor's course notes and lecture notes regarding evaluation for this course. The due date for successfully completing this tutorial (i.e. '''tutorial 2''') is be completed by '''Friday in week 3 by midnight''' ~~next week (i.e.~~ to obtain a grade of '''~~Week 3~~2%'''~~). If your instructor has NOT assigned marks for completing~~ towards this ~~tutorial, you can perform it for '''practice'''.~~course

In this investigation, you will learn how to '''create''', '''navigate''', '''list directory contents''' and '''remove''' directories in your Matrix account.

# '''Login''' to your matrix account (you should know how to do this from performing [https://wiki.cdot.senecacollege.ca/wiki/Tutorial_1:_Using_Your_Matrix_Server_Account#INVESTIGATION_1:_ACCESSING_YOUR_MATRIX_LINUX_ACCOUNT Tutorial 1 INVESTIGATION 1]]).

# Issue a command to '''confirm''' that you are located in your home directory (you should know how to do this from performing [[https://wiki.cdot.senecacollege.ca/wiki/Tutorial_1:_Using_Your_Matrix_Server_Account#INVESTIGATION_2:~~_USING_THE_LINUX_SHELL_.2F_ONLINE_ASSIGNMENTS~~ _USING_THE_LINUX_SHELL Tutorial 1 INVESTIGATION 2]]

# Issue the following Linux command: mkdir /home/your-seneca-id/uli101xx (remember: use your Seneca username instead of "your-seneca-id") '''NOTE:''' You should always confirm that you have created a directory. This can be done by issuing the '''ls''' command. [[Image:directory-structure-4.png|thumb|right|350px|'''Creating''' and '''Confirming''' the Creation of a Directory.]]

# Issue the following Linux command: ls /home/your-seneca-id/uli101xx There are no contents that are contained in this newly-created directory; therefore, no contents appear. A useful option '''-d''' can be used to confirm that the actual directory has been created as opposed to viewing the contents of the directory.

# Issue the following Linux command: ls -ld /home/your-seneca-id/uli101xx Is the output from this command the same was the output from the previous command? If so, what does this say about how to use multiple options for Linux commands?

# Issue the following Linux command to create the '''acp100xx''' and '''xyz100xx''' directories: mkdir /home/your-seneca-id/acp100xx /home/your-seneca-id/xyz100xx '''NOTE:''' You can create multiple directories by issuing the '''mkdir''' command with multiple arguments.

# Issue the following Linux command to confirm that those directories have been created: ls -ld /home/your-seneca-id/acp100xx /home/your-seneca-id/xyz100xx '''Using a FULL pathname starting from the root directory (i.e. /) requires is a LOT of typing!. Since we are already located in our home directory, we don't have to start from the root directory . This is called a "relative" pathname.'''

# We will now create the subdirectories that are contained in the '''uli101xx''' directory. Issue the following Linux command to move to the '''uli101xx''' directory using a '''relative''' pathname: cd uli101xx

# Issue a Linux command to confirm that your current location is in the ''uli101xx'' directory. You should know how to issue this command from a previous tutorial.

# Issue a Linux command to confirm that you are now located in your home directory. Although we will teach you how to '''remove''' directories and their contents in another investigation, let's remove the created directory structure' and '''recreate''' the same directory structure using just one command using pathnames.

# Issue the following Linux command to remove all of the directories that you have created: rm -r uli101xx acp100xx xyz100xx

# Issue a Linux command to confirm that the '''uli101xx''', '''acp100xx''' and '''xyz100xx''' ~~that~~ directories have been removed.

# Issue the following single Linux command to create the entire directory structure: mkdir -p uli101xx/notes uli101xx/tutorials uli101xx/samples acp100xx xyz100xx '''NOTE:''' The '''-p''' option allows "parent" directories to be automatically created first to then create their subdirectories.

# Issue the following Linux command to confirm that all of the directories have been created: ls -ld uli101xx/ uli101xx/notes uli101xx/tutorials uli101xx/samples acp100xx xyz100xx

To check for mistakes, a '''shell script''' has been created to check your work. If the checking shell script detects an '''error''', then it will provide feedback and offer constructive feedback on how to fix that problem so you can re-run the checking shell scripts until your work is correct.

# Make certain that your current directory is '''your home directory'''.

# Issue the following Linux command to run a checking script: ~~bash /home/murray.saul/myscripts~~~uli101/week2-check-1

# If you encounter errors, then view the feedback to make corrections, and then re-run the checking script. If you receive a congratulation message that there are no errors, then proceed to the next part.

# Issue the following Linux command: tree '''NOTE:''' You should see the directory structure that you created in the previous investigation. You can also issue the '''tree''' command using a directory pathname to display the directory structure for a specific scope. You can also use the '''-R''' option for the '''ls''' command to display all directories and subdirectories for a specified directory path (referred to as a '''recursive directory listing''').

# Issue the following Linux command: ls -lR What directories do you see?

# Issue the following Linux command: ls -lR ~~uli101xxx~~uli101xx Note the differences between both of these commands (i.e. using and not using a pathname). You can copy and move entire directories (and their contents) to other directories. <table align="right"><tr valign="top"><td>[[Image:directory-structure-7.png|thumb|right|250px|Output of the '''tree''' command to confirm copy of '''uli101xx''' directory (and contents) to the '''xyz100xx''' directory.]]</td><td>[[Image:directory-structure-8.png|thumb|right|300px|Output of the '''tree''' command to confirm movement of '''acp100 directory''' directory (and contents) to the '''xyz100xx''' diredtory.]]</td></tr></table>

# Issue the following Linux command: cp -R uli101xx xyz100xx

#Issue the following Linux command to display the directory structure of your home directory to confirm you copied the uli101xx directory: tree

# Issue the following Linux command: mv acp100xx xyz100xx/uli101xx/tutorials

#Issue the following Linux command to display the directory structure of your home directory to confirm you moved the acp100xx directory: tree Let's run a checking script to see if you moved and copied the directories correctly.

# Make certain that your current directory is '''your home directory'''.

# Issue the following Linux command run checking script: ~~bash /home/murray.saul/myscripts~~~uli101/week2-check-2

# If you encounter errors. make corrections and re-run the checking script until you receive a congratulations message, and proceed to the next investigation.

# Issue the following Linux command (entering "y" when prompted): rm -ri xyz100xx '''NOTE:''' You should have removed all directories that you have created. Let's run a checking script to confirm that you have correctly removed all of those directories.

# Issue the '''tree''' command to confirm that all of those recently created directories have been removed.

# Issue the following Linux command to run a checking script to confirm removal of those directories: ~~bash /home/murray.saul/myscripts~~~uli101/week2-check-3

# If you encounter errors, make corrections and re-run the checking script until you receive a congratulations message, and proceed to the next INVESTIGATION.

# Issue the same command that you performed in '''Step #2''' to confirm that you had properly edited that file.

# '''Save''' and '''exit''' your vi editing session. [[Image:vi-text-editor-2.png|right|250px|thumb|The online vi-tutorial provides users "hands-on" experience of using the vi text editor.]]An '''online tutorial''' has been created to give you "hands-on" experience on how to use vi text editor. It is recommended that you run this online tutorial in your Matrix account to learn how to create and edit text files with the vi text editor.

# Issue the following to run the vi online tutorial: /home/~~murray~~jason.~~saul~~carman/vi-tutorial

# In the tutorial menu, select the first menu item labelled "'''USING THE VI TEXT EDITOR'''"

#Read and follow the instructions in the tutorial. Eventually, it will display a '''simulated''' vi environment and will provide you with "'''hands-on'''" practice using the vi text editor. As far as this author is aware, there is NO "hands-on" tutorial for the nano text editor in this particular format.

# Issue the following Linux command: rm aa.txt b.txt a.txt.bk c.txt

# Issue the '''ls''' command to verify that these files have been removed.

# ~~After you complete~~ Complete the '''LINUX PRACTICE QUESTIONS''' to get additional practice~~, then work on '''online assignment #1''', '''section 2''' "''Basic Unix Commands''" (parts '''4''' to '''6''') labelled: "''Managing Files''" , "''Accessing Files''" and "''Review Exercise''"~~.

= LINUX PRACTICE QUESTIONS =

simulate a quiz:

https://~~ict~~github.~~senecacollege.ca~~com/ULI101/labs/~~~murray.saul~~raw/~~uli101~~main/uli101_week2_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).

# Write a Linux command to display unique occurrences of consecutive lines in a file called '''practice/customers.txt'''

# Create a '''table''' listing each Linux command, useful options that are displayed near the top of this tutorial labelled: '''Tutorial Reference Material'''

_________________________________________________________________________________

Author: Murray Saul

License: LGPL version 3

Link: https://www.gnu.org/licenses/lgpl.html

_________________________________________________________________________________

[[Category:ULI101]]

Chris.johnson

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