Git Basics

Question 1

what command displays the installed git version?

Answer 1

git –version

Question 2

what is > ?

echo ‘# README #’ > README.md

Answer 2

redirection operator

It takes the output of the command and places it in the file whose name appears to the right.

Question 3

what command creates a repository?

and what does it do?

Answer 3

git init

it creates a .git directory was added to the git_basics directory,

Note: only issue the git init command from within the directory that you wish to turn into a git repository.

Question 4

how do you make a directory NOT a git repository?

Answer 4

delete the .git directory within that directory.

Question 5

what is the .git Directory?

Answer 5

This directory will contain all of the configuration and metadata necessary for git to keep track of our files and the changes that we make to them.

Question 6

What are the 3 places on your system where git keeps its configuration information?

Answer 6

/etc/gitconfig
Contains settings that are system-wide and apply to all users and all of their repositories.

~/.gitconfig
Configuration that is specific to your user account. This file overrides /etc/gitconfig.

/.git/config
Configuration that is specific to a repository. This file overrides both of the other files.

Question 7

How do you configure your identity for git (AKA store your identity information, like name and email, in the ~/.gitconfig file)?

Answer 7

git config –global user.name “Maya Angelou”

git config –global user.email MayaAngelou@poets.com

Question 8

what does the –global flag do for a git command?

Answer 8

tells git to save the configuration in the user-wide configuration file, ~/.gitconfig

Question 9

what does the –system flag do for a git command?

Answer 9

tells git to save the configuration in /etc/gitconfig

thereby applying to all users on this computer

Question 10

what happens if you do not pass the git config command any flags?

Answer 10

it will save the name and email in the current repo’s config file, git_basics/.git/config

Question 11

what is the .gitignore file for?

Answer 11

a list of files and/or directories that you do not want included in your repository.

Question 12

What is a git commit?

Answer 12

a way to logically group a bundle of various changes together.

A commit can contain changes across many files, it can contain the addition of new files, as well as the deletion of existing files.

Question 13

In git, what is forked and merged?

Answer 13

only commits, not staged files, are forked and merged.

In git, we only move commits around.

Question 14

what command lists all the remote repositories that your local repository knows about

Answer 14

git remote

Question 15

what is origin in git?

Answer 15

alias to the remote repo

Question 16

what does the fetch command do?

Answer 16

download the commit data for each branch that the remote repo contains

Question 17

what are the 2 different ways of authenticating with Github from the command line? And what credentials do they use?

Answer 17

1. HTTPS
   authenticate using username and password and Password Caching

required cloning git repo with HTTPS

2. SSH
   authenticate using SSH keys