User:AvitalB/prototyping

Prototyping

Session 1

Unix

Unix is a portable, multitasking, multiuser, time-sharing operating system (OS) originally developed in 1969 by a group of employees at AT&T.

Raspberry Pi

Raspberry Pi is the name of a series of single-board computers made by the Raspberry Pi Foundation, a UK charity that aims to educate people in computing and create easier access to computing education.

Session 2

Session 2 pad

Creating a key

• Key for our user in pi (created in the first session)
• Our ssh key

Output in terminal when creating a key

+---[RSA 2048]----+         
|BEo       .      |
|**o      +       |
|=o+     . +      |
|.=o..  . +       |
|.ooo.o  S        |
|.oooo+.B +       |
|. o ..B.B        |
|      .= .       |
|     .ooB+       |
+----[SHA256]-----+

Making a secure login for the pi with our key

ls -a gives hidden files

Question: How do we create hidden files?

Git

The software that runs git softwares or companies based on git (GitHub,gitlab or git.xpub.nl)

It’s a way to keep track versions of projects (text, code, websites, images)

A git project will have a parent folder.

Parent folder- might have other folders in it with other files

git init- stating the git program in your folder (makes a git. Folder)

Command to make git track your project:
git status- shows in red what isn’t tracked and in green what is tracked
git add <file name>- starts tracking that file or files
git commit -m <“a comment about what change has been made”>- saves the version in the .git folder

HEAD- like a brunch, the version I am in right now

MASTER- like in Abstract

git diff <file name>- shows the what have change since previous commit

git checkout -- <file name>- deletes the changes that where made and comes back to the last commit

git add -u - will add all the tracked ones

git reset HEAD <name of file> - Undo a commit

git log- shows the commits

Publishing on XPUB GIT

• Create a new repository
• When you create it gives instructions (choose SSH in the toggle)
• pushing= publish to git website

Pushing from git to raspberry pi

• For now raspberry pi will just host our website
• On the git website we see the published file in dashboard

*** sudo let’s you install thing on pi- sudo apt install <software name> ***

*** sudo su- you can be someone else ***

• use HTTPS link (top right)
• Command to clone to pi git clone <HTTPS link> name the new folder

Work flow

• Clone to your computer the folder from GIT (with the ssh url)
• Then you can pull changes from the GIT
• Or push changes back to the GIT

More GIT

You can always revert to a previous commit on git with git log> than you copy the “name” (very long digits and numbers) of the commit. Than you do git checkout <insert name of commit you copied before>

git checkout HEAD> takes you back to the latest commit git checkout MASTER> takes you to the master

git status>shows you what is happening right now in the repository

.DS_store files that Mac makes (we want bot to see them)

cd.. go back to parent directory

ls -al > shows you regular+invisible files

Nano basic text editor (a bit like ne)

Nano .gitignore git will ignore this type of files

Example:

• .DS_store
• tmp/*- will ignore everything in this folder
• *.jpeg- will ignore all jpeg files

git commit -m “gitignore file” .gitignore

-m is a message specific for one file

-a will commit a bundle of all files added

Commit is local

Push makes it public