Command Line Console Terminal Quick-Start for Lubuntu 14.04 Trusty LTS Easy Guide

October 15th, 2014 by thelinuxevangelist

Getting-Started with Command Line on Lubuntu Linux

The Linux Tutorial Shows You How-to Quick-Start with the Command Line Console Terminal for Lubuntu 14.04 Trusty Tahr LTS Linux.

This is Just a ‘Quick and Dirty’ Introduction to the Command Line Basics by Example on Linux Command Line Console Terminal.

The Tutorial is Step-by-Step and You Can Just Getting-Started Following and Executing each Command without any Harm for Your System :)

After all only ‘Practice Makes the Master‘; so Do Not try to Getting-Started too Hard but Just ‘Take it Easy!‘ ;)

The Commands are Intended for Execution the Default Bash Linux Shell but Most should Works also for the Bourne, C, TC and Korn Shells…

Lubuntu Linux Command Line Console Terminal Quick-Start - Featured
  1. First Initiation is to Open a Command Line Terminal Session
    Press: Ctrl+Alt+t
    Or: Cmd/Win and Search ‘terminal’
    Press “Enter” to Execute Commands on Console

    Getting-Started with Command Line Console Terminal for Lubuntu 14.04 Trusty LTS - Featured
  2. To List a Directory Content (Directories and Files included)

    ls /[path]

    For Example to List the Content of the Root Directory:

    ls /

    Or to List the Content of the Home Directory:

    ls $HOME
  3. Next practice the Change of Directory
    Change to the Root Directory:

    cd /

    * Again find out how ‘cd‘ is an Abridgement of ‘changing directory‘ *
    Then Go to /usr/bin:

    cd /usr/bin

    Now to Navigate to the Parent Use the ‘..‘!
    So Back to the root with:

    cd ../..

    (It’s like to say: ‘One Step Back and then One Step Back’ again)
    Finally to Return Home is simple as:

    cd  

    Hey Congratulations! You achieved the First Walk into the Linux Directory Tree :)

  4. Furthermore about Linux Terminology, there are 3 different Entities Appelled as ‘Root’:

    • The System’s root: /
    • The root Directory: /root
    • The root User: the SuperAdmin than can Execute Any Command
  5. Again experiment the Creative powers
    With a test Directory like:

    mkdir $HOME/livingroom

    * See how ‘mkdir‘ is an Abbreviation of ‘making directory‘ *

    How you should have already understood, $HOME and ‘~‘ are both synonymous of your’s Home Folder.
    And the Home Directory is where your’s User Contents are Stored by Default.

    Moreover, to enhance your Memorization and Fun I rightly Use some Metaphoric term. So here you can Immagine a directory like a Room into your Home :)

    Try Making Multiple Directories at once with:

    mkdir $HOME/bedroom $HOME/bathroom $HOME/garden

    Finally use the ‘touch‘ Command to Make a New Empty File:

    touch $HOME/livingroom/box

    And how you could already have perceived I Make Use Here of the following Mnemonic Linking:

    • Directory -> Spatial Entity
    • File -> Thing

    And so in the Previous Command to an ‘Empty File’ corresponds an ‘Empty Thing’ like a ‘box’ ;)

  6. Experiment How to Copy Directories and Files

    • To Copy a Single File:
      * As in the other cases here ‘cp‘ is the Abbreviation for ‘copying‘ *

      cp $HOME/livingroom/box $HOME/bedroom/

      You see how in this Example we moved our ‘box’ from the ‘livingroom’ to the ‘bedroom’ :)

      Now verify the correctness of the operation Listing your’s bedroom contents:

      ls $HOME/bedroom/

      And the Output will exactly display as:

      box
    • Now for Instance to Copy a Single Directory inside to another do:
      cp -r $HOME/livingroom $HOME/garden

      List the ‘garden’ contents:

      ls $HOME/garden

      And you’ll Find:

      livingroom

      Now you have also a ‘livingroom’ copy into your ‘garden’ O:

      Moreover to Copy-Duplicate-Rename a Directory:

      First to be sure you are again into the $HOME area:

      cd 

      And then Make a newly duplicated room do:

      cp -r ./livingroom ./room

      Finally, to Copy-Displace-Rename at the same time:

      cp -r $HOME/livingroom $HOME/bedroom/wardrobe

      But this is Magically Crazy, we have trasformed our ‘livingroom’ into a ‘wardrobe’ inside to the ‘bedroom’ :))

  7. Next Experiments the Dynamics of Files and Directories
    And in this Moving dimension Files or Directories are taken as the Same.
    * Again you find here the ‘mv‘ Command as a Contraction of ‘moving‘ *
    So now for instance Make and Empty ‘bottle’:

    touch ~/livingroom/bottle

    And then we Displace it in another Room:

    mv ~/livingroom/bottle ~/bedroom/

    Then verify Listing the ‘bedroom’ contents:

    ls ~/bedroom/

    And what you Find? The:

    bottle

    Also if only an empty one, sorry :))

    Again you can Move & Rename at the same time like:

    mv ~/bedroom/bottle ~/bathroom/can

    Here we have magically trasformed an empty ‘bottle’ inside the ‘bedroom’ in an empty ‘can’ inside to the ‘bathroom’.
    And as I said in the introduction the Command for Directories works the Same!
    So now ‘Like Alice in the Wonderland’ we Move the Directory ‘livingroom’ we set into the ‘garden’ in a ‘teapot’ in the bedroom!

    mv ~/garden/livingroom ~/bedroom/teapot

    Patiently Verify it with:

    ls ~/bedroom/teapot

    Finding What? An:

    
    

    Empty Space!

  8. Finally we try investigating our Magical Destroying Powers
    Deleting Directories and Files!

    Especially Releant: in Normal Activity you should Triple Check the Commands Before Execution
    As in Shell there’s Not a Trash Bin and so the stuff is directly Annihilated!!!

    * As in all other cases also ‘removing‘ is here Abreviated by ‘rm‘ *

    • How Removing Files

      First we Wipe Out the ‘box’ in the ‘livingroom’ with:

      rm $HOME/livingroom/box

      Check it with:

      ls $HOME/livingroom/

      Now we try the same for Multiple Entities
      First we Make a Copy of the ‘can’ into then ‘bathroom’ in a ‘jar’ into the ‘bedroom’, always Magics Here ;) with:

      cp $HOME/bathroom/can $HOME/bedroom/jar

      And then how to Liquidate Both? Simply like that:

      rm $HOME/bathroom/can $HOME/bedroom/jar
    • How Removing Directories

      Now we Start to Hollow our beautiful Home… ((:
      First we Raze the ‘livingroom’:

      rm -rf $HOME/livingroom

      And finally we Desert All the Remaining Spaces:

      rm -rf ~/bathroom ~/bedroom ~/garden

    Sorry, we Transformed our Home into a Blank Space, but What a Fun! :))

  9. Last How-to Get the Admin Super-Powers

    To Login as SuperUser:

    sudo su

    If Got “User is Not in Sudoers file” then Look: Solution

    Then to Logout:

    exit

    (To Protect Your System from the possible Damages of an Hazardous ‘Crazy’ Command Execution the Logout ‘Should’ be Executed Every Time a Conscious and Meaningful Series of Commands has been Achieved… )
    Finally to Execute a Single Command as SuperUser:

    sudo su -c 'myCommand'

    Or:

    sudo myCommand
  10. How-to Set Permissions on Lubuntu File System:

    Lubuntu Permissions Quick-Start
  11. Here is achieved the ‘Quick&Dirty’ Initiation to the Lubuntu Linux Command Line Sphere :)
    I’ll be Back Very Soon to Show the Basics of the Apt Software Packages and Repository Administration Commands!

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