Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.
Useful commands
Start a project from scratch: git init and then git remote add origin {repository-url}
Pull the last commits from the distant server: git pull
Add all the modifications to the stack: git add .
Do a commit with a description: git commit -m "message"
Push the commit(s) on the distant server: git push
Discard the changes on uncommited files: git checkout .
Create a new branch: git branch {new-branch}
Merge the current branch with another: git merge {other-branch}
Delete a local branch: git branch -d {local-branch}
Delete a remote branch: git push origin --delete {remote-branch}
Change your working branch: git checkout {branch-name}
Visualization
Get the repo's status git status or the repo's history: git log
Get the list of branches: git branch or git branch -v to get more info
Get the the commit-tree of all branches: git log --oneline --abbrev-commit --all --graph --decorate --color
Configuration
Keep the password in memory for the next 8 hours: git config --global credential.helper 'cache --timeout 28800'
Add a shortcut to add and commit at the same time: git config --global alias.ac '!git add -A && git commit' and then git ac -m "message"
Configure an alias to display the commit-tree: git config --global alias.gg 'log --oneline --abbrev-commit --all --graph --decorate --color' and then use git gg