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

October 15, 2014 | By the+gnu+linux+evangelist.

Getting-Started with Command Line on Kubuntu Linux

The Tutorial shows you How to Quick Start with the Command Line Console Terminal for Kubuntu 14.04 Trusty Tahr LTS Linux.

This is Just a ‘Quick and Dirty’ Introduction to the Command Line 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…

Kubuntu Linux Command Line Console Terminal Quick Start - Featured

First, Initiation is to Open a Command Line Terminal Session
Press “Enter” to Execute Commands on Console
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
```
Next practice the Change of Directory
Change to the Root Directory:
```
cd /
```
[Again find out how “cd” is an Abridgement for “Changing Directory“]
Then Go to /usr/bin:
```
cd /usr/bin
```
Now to Navigate Back to the Parent use the “..” option.
So non to Return to the Root of the Directory Tree you may play:
```
cd ../..
```
(It’s like to say: ‘One Step Back and then One Step Back’ again)
Finally, to Return Home is simple as:
```
cd  
```
Then to Verify you are in that Location Use:
```
pwd
```
[In this case the “pwd” Command is a Shortcut for “Print Working Directory“]
Hey Congratulations! you achieved the First, Step-by-step Walk into the Linux Directory Tree! :)

Especially relevant, about the Shell Terminology, there are 3 different Entities named as “Root”:

The System’s Directory Tree Root: /
The root User’s Directory: /root
The root User: the SuperAdmin that can Execute Any Command

Again experiment the Creative powers
With a test Directory like:
```
mkdir $HOME/livingroom
```
[See here again how “mkdir” is an Abbreviation for “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 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
```
Try to use the “ls” Command to Check your creative Work:)
```
ls ~
```
Finally, use the ‘touch‘ Command to Make a New Empty File:
```
touch $HOME/livingroom/box
```
And how you could already have perceived, in my creative Examples I make use of the following Mnemonic Linking:
- Directory -> Spatial Entity
- File -> Thing
And so in the Previous Command to an “Empty File” corresponds a natively “Empty Thing” like a “box”, or otherwise you may take it as a simple Label/Name ;)

5. Copying Stuff

Experiment How to Copy Directories and Files.
- To Copy a Single File:
  * As in the other cases here ‘cp‘ is the Abbreviation for ‘Copy‘ *
```
cp $HOME/livingroom/box $HOME/bedroom/
```
  You see how in this Example we copied 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
```
  By the way with this “magically crazy” Command we have trasformed our ‘livingroom’ into a ‘wardrobe’ inside to the ‘bedroom’ :))

6. Moving Stuff

Next Experiments the Dynamics of Files and Directories
And in this Moving dimension Files or Directories are taken as the Same.
[Again find out here how the “mv” Command is 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
```
Again we have “magically changed” 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 again like “Alice in the Wonderland” we Reshape the Folder “livingroom” in the “garden” into a “teapot” in the bedroom! :}}
```
mv ~/garden/livingroom ~/bedroom/teapot
```
Patiently Verify it with:
```
ls ~/bedroom/teapot
```
Finding What?
```
 
```
Simple :) Emptiness! :}

7. Annihilating

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

Especially Releant: in a Working Environment you should Triple Check the Commands Before Execution…
Because in the Shell Environment there’s No Trash Bin and so the stuff is directly Annihilated!!!

[And as you may have already wittily perceived, here “Removing” is just Resumed in “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’, Magically as before… :)) with:
```
cp $HOME/bathroom/can $HOME/bedroom/jar
```
  And now how to brutally Get Rid of Both? Simply like that:
```
rm $HOME/bathroom/can $HOME/bedroom/jar
```
- How Removing Directories.
  
  Now we Start to furiously Destroying our nice Home… [[[:
  First, we Raze the ‘livingroom’:
```
rm -rf $HOME/livingroom
```
  “-rf” is a combination of Flags. “r” for Recursively and “f” for Forced
  And finally, finally, we simply Desert All-in-one the Remaining Habitats:
```
rm -rf ~/bathroom ~/bedroom ~/garden
```
Sorry, we have Turned our Home into Empty Space, but What a JOKE! {{{:

8. Getting Admin Power

Last How to Get the Admin Super-Powers.

To Login as SuperUser:
```
sudo su
```
If Got “User is Not in Sudoers file” then see: How to Enable sudo
Then to Logout:
```
exit
```
To Protect your System from the potential Damage of an Hazardous Crazy Command Execution the Logout should be executed every Time your Setup is Achieved!
Finally, to Execute a Single Command as SuperUser:
```
sudo su -c 'myCommand'
```
Or:
```
sudo myCommand
```
So for instance to List the Protected root Directory try to run:
```
sudo ls /root
```
How to Set Permissions on Kubuntu File System

Kubuntu Permissions Quick Start

Setting Up Permissions on Kubuntu

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

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

Getting-Started with Command Line on Kubuntu Linux

5. Copying Stuff

6. Moving Stuff

7. Annihilating

8. Getting Admin Power