Git is a free and open source distributed version control system used to handle projects of any size with speed and efficiency. GitHub allows for collaboration by forking repositories, sending pull requests, and managing public and private git repositories. Key git commands include git log to view commit logs, git status to check the status, git add to add files, and git commit to commit changes.

1. Sangjung Woo again4you@gmail.com How to use Git

2. Git Git is a free & open source, distributed version control system designed to handle everything from small to very large projects with speed and efficiency. http://git-scm.com/

3. Github GitHub is the best way to collaborate with others. Fork, send pull requests and manage all your public and private gitrepositories. https://github.com/

4. git install on Ubuntu system Install debian package sudo apt-get install git-coregit-doc gitk SSH key registration Send again4you@gmail.com How to check

5. User information setting Type shell prompt gitconfig --global user.name "SangjungWoo” gitconfig --global user.emailagain4you@gmail.com gitconfig --global color.ui "auto” gitconfig --global color.diffauto gitconfig --global color.statusauto gitconfig --global color.branchauto gitconfig --global core.editor "vim” Check gitconfig --global --list

6. Clone repository Make local repository git clone git@github.com:sangjung/linux-kernel-study.git

7. git command git log Show commit log

8. git command git status Show the working tree status

9. git command git add Add file contents to the index git add [files] gitadd .

10. git command git commit Record changes to the repository git commit -m "Message” git commit Show time!

11. git command git tag Create, list, delete or verify a tag object signed with GPG git tag gittag -a [Tag Name] gittag -d [Tag Name]

12. git command git reset Reset current HEAD to the specified state gitreset HEAD^ gitreset --hard (committed or tag)

13. git command gitclean Remove untracked files from the working tree git clean –f gitclean –d gitclean -df

14. git command gitpull Fetch from and merge with another repository or a local branch

15. git command git push Update remote refs along with associated objects gitpush gitpush --tags

16. git command git show Show various types of objects

17. git command git diff Show changes between commits, commit and working tree, etc

18. git command git help [command] git branch git fetch git merge gitk