git

Question 1

git init

Answer 1

initializes a git repository

creates a .git directory, which if deleted will remove the git tracking

Question 2

/etc/gitconfig
~/.gitconfig
REPOSITORY/.git/config

Answer 2

Git configuration files.
/etc/gitconfig = system wide, applicable to all users
~/.gitconfig = user specific
REPOSITORY/.git/config = repository specific

Question 3

git config –global user.name “Maya Angelou”

Answer 3

Sets a user.name variable in gitconfig
git config –system sets variables in system gitconfig
git config without flags sets variables in the repository gitconfig

Question 4

git status

Answer 4

displays the working tree and staging area.

Working tree = files that will be in next submit
staging area = files not impacted by a submit

Question 5

.gitignore

Answer 5

tells git which files / directories to ignore
e.g. will do as comment indicates:
# Ignore all SQLite databases
db/*.sqlite3

Question 6

git add

Answer 6

Add a file to git for tracking. Changes made after git add will not be included in a commit
Prior to adding, the file is untracked, and changes can still be made as part of current revision

Question 7

git commit

Answer 7

a bundle or group of changes which are posted back to main branch.
Can contain multiple files, including new files, and deletion of existing files.
-m flag allows addition of message to the commit

Question 8

git log

Answer 8

displays a history of commits

Question 9

branch

Answer 9

copy of all the files in the codebase.
Each branch has an identifying name, and seter of version of commit history
A branch is made by forking
branch commits (not files!) can be merged back into main branch

Question 10

git fetch

Answer 10

pulls all changes from github down to local git repository

Question 11

git push

Answer 11

“push” a local git repository to github to track
use “git push -u origin main” to push setting the default upstream repository for push / pull, etc.
sets the “main” branch in the “origin” repository

Question 12

git diff

Answer 12

used to compare remot to local repositories.  
use 
git diff main origin/main
or
git diff origin/main main

Question 13

git pull

Answer 13

used to pull changes in local repository from remote

git pull –ff-only

Question 14

git clone

Answer 14

makes exact copy of remote repository to new local repository