Navigation on the Raspberry Pi - Revision history

EdmondLascaris: /* Learn how to navigate the Linux directory */

2022-03-07T23:34:14Z

Learn how to navigate the Linux directory

EdmondLascaris: /* Navigating up and down directories */

2022-03-07T23:33:26Z

Navigating up and down directories

EdmondLascaris at 23:31, 7 March 2022

2022-03-07T23:31:44Z

← Older revision		Revision as of 23:31, 7 March 2022
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	[[File:Screen Shot 2021-12-16 at 9.55.17 pm.png]]		[[File:Screen Shot 2021-12-16 at 9.55.17 pm.png]]

	~~MAKING DIRECTORIES AND FILES IN THE TERMINAL~~


	== Making Directories and Files in the Terminal ==		== Making Directories and Files in the Terminal ==
	=== Creating a Directory ===		=== Creating a Directory ===

			* Up to now we have navigated up and down directories. In this lesson we will show you have to make new directories and also to populated them with files.
			* To make a new directory techschool we enter the command '''mkdir techschool'''

			[[File:Mkdir techschool.png]]

	* To check that the new directory has been created use the '''ls''' command.		* To check that the new directory has been created use the '''ls''' command.
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	[[File:Mkdir backup.png]]		[[File:Mkdir backup.png]]

	== ~~Making Directories and Files in the Terminal~~ ==		=== Navigating back to home directory ===
	=== ~~Creating a directory~~ ===
	* Up to now we have navigated up and ~~down directories~~. ~~In this lesson~~ we ~~will show you have to make~~ new ~~directories and also~~ to ~~populated them with files~~.		* After all this fun we need to navigate back to our home directory.
	* To ~~make a new directory techschool~~ we enter the command '''~~mkdir techschool~~'''		* The easy way to do this is to enter the command '''cd ~''' (tilde symbol - below the Escape key).
			* You can prove that you are in the pi user home directory with the command '''pwd'''

			[[File:Cd-home-directory.png]]

			== Updating the Raspberry Pi System Software Library ==
			The great thing about the Raspberry Pi is that you can install lots of free software.

			The software is written by a community of computer enthusiasts who believe that most things in life should be free - especially computer software and operating systems.

			Before we can install or search for any new software we need to update a software library catalog stored on our computer.

			* To update our local library we need to enter the command '''sudo apt-get update'''
			** '''sudo''' is short for Super User. It gives us special powers
			** '''apt-get''' is the program or application that is responsible for maintain the software library
			** '''update''' is the instruction to update the library

			When you enter the command your computer will start the update process.

			Sometimes this takes only a few seconds, but it can take longer depending on the speed of your internet connection and also how many updates to the library are required.

	[[File:~~Mkdir techschool~~.png]]		[[File:Sudo-apt-get-update.png]]

EdmondLascaris: /* Checking your Raspberry Pi internal IP address */

2022-03-07T23:23:03Z

Checking your Raspberry Pi internal IP address

← Older revision		Revision as of 23:23, 7 March 2022
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	[[File:Screen Shot 2021-12-16 at 9.55.17 pm.png]]		[[File:Screen Shot 2021-12-16 at 9.55.17 pm.png]]

			MAKING DIRECTORIES AND FILES IN THE TERMINAL
			== Making Directories and Files in the Terminal ==
			=== Creating a Directory ===

			* To check that the new directory has been created use the '''ls''' command.
			* To enter into the techschool directory we enter the command '''cd techschool'''
			* You can also check to see if you have entered the /home/pi/techschool directory correctly be entering the command '''pwd''' (present working directory).

			[[File:Cd techschool.png]]

			=== Looking inside the directory ===

			* If we type in the command ls we can have a look inside the techschool directory.
			* At the moment the directory is empty.

			[[File:Ls empty directory.png]]

			=== Creating a file within the directory ===

			* We can now quickly create an empty file in the techschool directory
			* Enter the command '''touch test1.txt''' we create a new file called text1.txt
			* The file name and extension do not matter.
			* You don't have to write a file extension, and you could also add any extension (e.g. .dat .exe .csv)

			[[File:Touch test1.png]]

			* Let's create another file called dummy.txt by entering the command '''touch dummy.txt'''
			* Then enter ''ls'' to check that its been created.

			[[File:Touch dummy txt.png]]

			* Create a few more files with the '''touch''' command and then enter the '''ls''' command to list them.

			[[File:Touch demo1.png]]

			* We have just been using the ls command by itself.
			* We can add an '''Option''' to the ls command.
			* By entering '''ls -l''' (-l is short for long format) it will list all files in long format.
			* This will include other details about each file such as who the owner is and when the file was created.

			[[File:Ls minus l.png]]

			=== Creating another directory ===

			* Once again, we can make a new directory called backup with the command '''mkdir backup'''
			* If we enter the command '''ls -l''' we can see that there is a lower case d in the line with the directory backup. The d tells us that this item is a directory.

			[[File:Mkdir backup.png]]

	== Making Directories and Files in the Terminal ==		== Making Directories and Files in the Terminal ==

EdmondLascaris: /* Creating a directory */

2022-03-07T23:05:52Z

Creating a directory

← Older revision		Revision as of 23:05, 7 March 2022
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	=== Creating a directory ===		=== Creating a directory ===
	* Up to now we have navigated up and down directories. In this lesson we will show you have to make new directories and also to populated them with files.		* Up to now we have navigated up and down directories. In this lesson we will show you have to make new directories and also to populated them with files.
	* To make a new directory techschool we enter the command mkdir techschool		* To make a new directory techschool we enter the command '''mkdir techschool'''

	[[]]		[[File:Mkdir techschool.png]]

EdmondLascaris: /* Learning Objectives */

2022-01-09T23:13:33Z

Learning Objectives

← Older revision		Revision as of 23:13, 9 January 2022
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	* Learn how to read and modify files		* Learn how to read and modify files
	* Updating the Raspberry Pi system software library		* Updating the Raspberry Pi system software library
	* hello

	== Learn how to navigate the Linux directory ==		== Learn how to navigate the Linux directory ==

EdmondLascaris: /* Learning Objectives */

2022-01-09T23:10:19Z

Learning Objectives

← Older revision		Revision as of 23:10, 9 January 2022
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	* Learn how to read and modify files		* Learn how to read and modify files
	* Updating the Raspberry Pi system software library		* Updating the Raspberry Pi system software library
			* hello

	== Learn how to navigate the Linux directory ==		== Learn how to navigate the Linux directory ==

EdmondLascaris: /* Finding your IP address */

2021-12-16T11:03:00Z

Finding your IP address

← Older revision		Revision as of 11:03, 16 December 2021
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	* You should see your IP address on the third line.		* You should see your IP address on the third line.
	* In the example below by Raspberry Pi IP address is 192.168.0.32		* In the example below by Raspberry Pi IP address is 192.168.0.32
	* Everyone's IP address will be different.		* Everyone's IP address will be different and the IP address may change each time you start your Raspberry Pi.
			* There are also ways to make sure your IP address stays the same.

	[[File:Screen Shot 2021-12-16 at 9.48.10 pm.png]]		[[File:Screen Shot 2021-12-16 at 9.48.10 pm.png]]

EdmondLascaris at 11:01, 16 December 2021

2021-12-16T11:01:37Z

← Older revision		Revision as of 11:01, 16 December 2021
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	[[File:Screen Shot 2021-12-16 at 9.49.39 pm.png]]		[[File:Screen Shot 2021-12-16 at 9.49.39 pm.png]]

			* Scroll to the end of the Terminal output and look for wlan0
			* wlan is short for Wireless Local Area Network.
			* If you look closely on the second line you will see the IP address after inet - 192.168.0.73

			[[File:Screen Shot 2021-12-16 at 9.55.17 pm.png]]

			== Making Directories and Files in the Terminal ==
			=== Creating a directory ===
			* Up to now we have navigated up and down directories. In this lesson we will show you have to make new directories and also to populated them with files.
			* To make a new directory techschool we enter the command mkdir techschool

			[[]]

EdmondLascaris at 10:54, 16 December 2021

2021-12-16T10:54:28Z

← Older revision		Revision as of 10:54, 16 December 2021
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	[[File:Screen Shot 2021-12-16 at 9.12.09 pm.png]]		[[File:Screen Shot 2021-12-16 at 9.12.09 pm.png]]

	~~== Navigating on the Raspberry Pi ==~~
	=== Check for files and directories ===		=== Check for files and directories ===
	* Now that we know how to open up the Terminal we can use it to navigate around the Raspberry Pi.		* Now that we know how to open up the Terminal we can use it to navigate around the Raspberry Pi.

← Older revision		Revision as of 23:34, 7 March 2022
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	== Learn how to navigate the Linux directory ==		== Learn how to navigate the Linux directory ==
	=== Open the Raspberry Pi Terminal ===		=== Open the Raspberry Pi Terminal ===
	* From the Raspberry Pi desktop open up the Terminal.		* From the Raspberry Pi desktop open up the '''Terminal'''.
	* The Terminal is the small black box looking icon at the top left of the Desktop		* The Terminal is the small black box looking icon at the top left of the Desktop
	* When you open the Terminal it will appear as a large window with a black background.		* When you open the Terminal it will appear as a large window with a black background.
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	=== Adjusting font settings ===		=== Adjusting font settings ===
	* When you first open the Terminal you may need to adjust the Font settings.		* When you first open the Terminal you may need to adjust the Font settings.
	* To edit settings, from the top drop-down menu select Edit > Preferences.		* To edit settings, from the top drop-down menu select '''Edit > Preferences'''.
	* Click on the box to the right of Terminal font.		* Click on the box to the right of Terminal font.

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	* Now that we know how to open up the Terminal we can use it to navigate around the Raspberry Pi.		* Now that we know how to open up the Terminal we can use it to navigate around the Raspberry Pi.
	* When we start we are in the user pi home directory.		* When we start we are in the user pi home directory.
	* To list all the files and directories we enter the command ls		* To list all the files and directories we enter the command '''ls'''
	* You should see a list appear:		* You should see a list appear:
	** white items are files		** white items are files

← Older revision		Revision as of 23:33, 7 March 2022
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	=== Navigating up and down directories ===		=== Navigating up and down directories ===
	* The directory structure on the Raspberry Pi is arranged in the form of a tree.		* The directory structure on the Raspberry Pi is arranged in the form of a tree.
	* To go back down the tree - towards the root - we need to enter the command cd .. (cd and two dots)		* To go back down the tree - towards the root - we need to enter the command '''cd ..''' (cd and two dots)
	* cd is short for Change Directory		* cd is short for Change Directory
	* Every time we enter this command (cd ..) it will take us down the tree.		* Every time we enter this command ('''cd ..''') it will take us down the tree.
	* The Terminal tells us that we have moved down one branch and are now in the /home directory		* The Terminal tells us that we have moved down one branch and are now in the /home directory

	[[File:Screen Shot 2021-12-16 at 9.18.06 pm.png]]		[[File:Screen Shot 2021-12-16 at 9.18.06 pm.png]]

	* If we enter the command cd .. again it will take us right down to the root of the tree.		* If we enter the command '''cd ..''' again it will take us right down to the root of the tree.
	* This is symbolised by the / (forward slash) symbol.		* This is symbolised by the / (forward slash) symbol.

	[[File:Screen Shot 2021-12-16 at 9.34.09 pm.png]]		[[File:Screen Shot 2021-12-16 at 9.34.09 pm.png]]

	* Using the ls command we can have a look around to see what branches are coming up out of the root (/) directory.		* Using the '''ls''' command we can have a look around to see what branches are coming up out of the root (/) directory.
	* Enter the command ls		* Enter the command '''ls'''

	[[File:Screen Shot 2021-12-16 at 9.37.12 pm.png]]		[[File:Screen Shot 2021-12-16 at 9.37.12 pm.png]]

	* Another way we can find out where we are in the Raspberry Pi (Linux) directory is to enter the command pwd		* Another way we can find out where we are in the Raspberry Pi (Linux) directory is to enter the command '''pwd'''
	* pwd is short for Present Working Directory.		* pwd is short for Present Working Directory.
	* In the root directory, the output will be the / symbol (forward slash).		* In the root directory, the output will be the / symbol (forward slash).