Git essentials commands

git.sh

# Configuration
git config user.name "My Name"
git config user.email "[email protected]"

# Initialize a git repository
git init

# Add all files to be commited
git add .

# Add one file to be commited
git add -- name_of_file.ext

# Add all files inside one folder to be commited
git add -- name_of_folder

# Commit
git commit -m 'Commit description'

# Update local repository from a remote (origin = remote name, master = branch name)
git pull origin master

# Send commit to a remote repository
git push origin master

# Clone a remote repository
git clone git@host:user/repository.git
ex: git clone [email protected]:dtelaroli/docker-rails.git

# Show origin details (origin = remote name)
git remote show origin

# Create a branch
git checkout branch_to_be_copied
git checkout -b branch_name

# Merge branches
git checkout branch_to_receive_merge
git merge branch_to_be_merged

# Undo all changes
git checkout .

# Undo changes in specific file
git checkout -- file_name.ext

# Undo commit definetelly
git reset --hard hash_to_commit_or_branch

# Finding the guilty
git blame filename.ext

# Checking steps
git reflog

# Checking commits
git log