* Installing git
$ sudo apt install git-all // Use this command if you’re on a Debian-based distribution, such as Ubuntu. For other operating system follow https://git-scm.com/book/en/v2/Getting-Started-Installing-Git
$ git --version // check version

* Set your username
$ git config --global user.name "Firstname Lastname"

* Set your email address
$ git config --global user.email "name@example.com" 

* Initialize a local git repository 
$ git init  

* Check status
$ git status

* Add a file to staging area
$ git add [filename]

* Add all files to staging area. Use any of the following two commands
$ git add -A 
$ git add .

* Add commit message
$ git commit -m "message"

* Add a remote repository
$ git remote add origin git@github.com:USERNAME/REPOSITORY.git 

* Push changes to remote repository
$ git push -u origin [branch name] 

* Pull changes from remote repository 
$ git pull origin [branch name] 

* List existing remotes    
$ git remote -v

* Change remote repository
$ git remote set-url origin git@github.com:USERNAME/NEW_REPOSITORY.git 

* List branches    
$ git branch 
$ git branch -a	// list all branches (local and remote)

* Create new branch 
$ git branch [branch name]	

* Delete a branch from local repository
$ git branch -d [branch name]

* Delete remote branch
$ git push origin --delete [branch name]

* Create new branch and switch to it
$ git checkout -b [branch name]	

* Rename branch
$ git branch -m [old branch name] [new branch name] 

* Switch to a branch
$ git checkout [branch name]

* Discard changes to a file
$ git checkout -- [filename]

* Change last commit message 
$ git commit --amend -m "New commit message."

* Change last commit message if already pushed to remote
$ git commit --amend -m "New commit message."
$ git push --force [branch-name] 

* Merge a branch into current branch
$ git merge [branch-name]

*  When a conflict occurs, this option can be used to finish the merge after resolving the conflicts
$ git merge --continue

* When a conflict occurs, this option can be used to abort the merge and restore the project's state
$ git merge --abort 

* Delete last commit from remote repository
$ git reset --hard HEAD^ 
$ git push origin -f

* Delete last commit from local repository
$ git reset --hard HEAD^ 

* Delete last n commits.
$ git reset --hard HEAD~n // n= 1,2,3 etc

* Uncommit the last commit, but keeps the changes
$ git reset HEAD^ 

* Stash 
$ git stash // git stash temporarily shelves (or stashes) changes you've made to your working copy so you can work on something else, and then come back and re-apply them later on.
$ git stash pop //  throws away the (topmost, by default) stash after applying it
$ git stash clear // deletes all stash

* Inspecting changes
$ git diff

* Viewing commit history
$ git log

* Rebase
$ git rebase [branch name] // rebase a branch 
$ git rebase --continue // to finish a rebase after resolving conflicts
$ git rebase --abort // to completely undo the rebase

* Example Workflow to rebase master and feature/1 branch
$ git checkout master
$ git pull
$ git checkout feature/1
$ git rebase master
$ git checkout master
$ git rebase feature/1
$ git push