Git

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.

Git is easy to learn and has a tiny footprint with lightning fast performance. It outclasses SCM tools like Subversion, CVS, Perforce, and ClearCase with features like cheap local branching, convenient staging areas, and multiple workflows.

[Git, free and open source https://git-scm.com/]

Tutorial's

Git Cheat Sheets German

git Reference

git Book

Git-Grundlagen für Entwickler - Alles was man zum Einstieg wissen muss | Thomas Claudius Huber

Wie man mit Git richtig produktiv wird | Michael Kaufmann

Set global username/email:

   git config --global user.name "NAME"

   git config --global user.email "mail@example.com"

Set repository-specific username/email:

   git config user.name "NAME"

   git config user.email "mail@example.com"

   git config --global --edit

   cat .git/config

Create empty/new repository or reinitialize an existing repository:

   git init
   Initial commit is the first commit at Branch Master

Show repository/dir status:

  git status

Show log status:

  git log

  git log --stat

  git log --oneline

  git log --oneline --decorate

  git log -n 1

  git log --after "2020-09-01"

  git log --before "2020-09-01"

Show os language and change it temporarily

  echo $LANG

  export LANG="en_US.UTF-8

Create new empty file

  nano testfile

  touch testfile

  vi testfile

Add file or directory to "StageArea"

  git add testfile

  git add .
  add all "files/directories" from current directory

  git reset HEAD filename
  remove file from StageArea

Remove file or directory from "StageArea"

  git rm --cached filename

Remove and delete file or directory from "StageArea and Filesystem"

  git rm -f filename

Commit file or directory to branch

  git commit
  add message manually

  git commit -m "Message for commit"

  git commit --amend --reset-author
  change commit author

  git commit -am "Message for commit"

Create ignore file

  nano|touch|vi .gitignore

Branches

Show Branch

  git branch

  git branch -d NAME
  delete branch

  git branch -d NAME1 NAME2 MORE
  delete 2 or more branches

  git branch -D NAME
  force delete branch
  
  git branch --merged

  git branch --no-merged

checkout

  git checkout NAME

  git checkout -b

merge

  git merge NAME
  normal merge without errors

  git merge --abort
  

  git checkout