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Essentials

Modern JavaScript cheatsheet

Introduction

Git is a decentralized version management software: It allows to store data remotely but also locally. Git does not rely on a centralized server, but uses a peer-to-peer connection system. The developed computer code is stored not only on the computer of each project contributor, but it can also be stored on a dedicated server (Remote).

Git init

Initialize a .git repository. It can be used to convert an existing, unversioned project to a Git repository or initialize a new, empty repository.

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git init

Git config

Setup user details. Git will associate them with locally created commits.

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git config --global user.email "myemail@gmail.com"
git config --global user.name "MyUsername"

To see current config :

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git config --list
Result 
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user.name=MyUsername
user.email=myemail@gmail.com

Git status

Get informations about the current git directory (Untracked/new/changed/removed files) 

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git status

Git add/reset

Add/remove files from git tracking

Git add

Add to tracking (Stage changes)

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git add readme.md
Info

readme.md file is staged

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git add *.html
Info

Every HTML files are staged

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git add --all
Tip

Every available files are staged.
You should git status first to make sure you are not tracking unwanted files.

Git reset

Remove files from git tracking

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git reset HEAD readme.md
Info

readme.md file is not tracked anymore (But changes made to the file remain unchanged)

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git reset HEAD
Info

Cancels all last git add (Unstage all)

Git commit

Commit changes to git. Only tracked files are committed. You can add files and commit with the same command line

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git commit -m "Mon premier commit"

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git commit -a -m "Premiere modif"

Git log

Git logging to see details about commits.

  • Git log : Basic operation
  • Oneline : Use One-line Display
  • File Specific : Display commits associated with a specific file
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git log  # Shows last commits
git log -n 2 # Shows the last 2 commits

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git log --oneline
Exemple 
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1653f44 Create README.md
8f3add2 Add requirements.txt
1a5c42c New theme material
3af103e First commit

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git log -p readme.md

Git diff

Display what changed since last commit

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git diff

Gitignore

Setup files to ignore when versioning with a .gitignore file

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*.tmp        # Ignore tout les fichiers .tmp
log.txt      # Ignore le fichier log.txt
tmp/*        # Ignore tout les fichiers du dossier tmp

Sources

  1. Git Docs ↩