A 45 minutes presentation slides on Version Control History and Git Basics by 1. Sreedath N S, Devops Engineer, Zesty Beanz Technologies Pvt. Ltd. http://in.linkedin.com/in/sreedathnamangalam 2. Fahad Basheer, Cloud Computing Consultant, Zesty Beanz Technologies Pvt. Ltd. http://in.linkedin.com/in/fahadpv http://www.zbeanztech.com/

1. Git - Basics

2. ● Management of changes to collection of Information
● Identified by revision number
● Revisions can be compared restored and merged
● Coordinating Teams
Version Control Software

3. Centralised VCS vs Distributed VCS

4. ● One true source code
● Commit and Checkout from a central location
● No need to keep many copies of single file in hard disk
● Eg:- SVN, OpenCVS and Perforce
● Difference in workflow and performance
● Typical CVCS Workflow
○ Pull down any changes other people have made from the central
server
○ Make your changes, and make sure they work properly
○ Commit your changes to the central server, so other programmers
can see them
Centralised VCSs

5. ● Every repository is good as any other
● Do not necessarily rely on a central server
● Developer “clones” a copy of a repository and has the full history of the
project on their own hard drive
● “Pulling” and “Pushing”
● Act of cloning
Distributed VCSs

6. ● Actions other than pushing and pulling to repositories are extremely fast
● Committing new changesets can be done locally
● Work and commit changes from anywhere without Internet, push them
all to git server at once
● Share with one or two people to get feedback and then share with all
Advantages of DVCS

7. ● Space needed to store all version of large binary files can accumulate
quickly
● Long history projects can take an impractical amount of time and disk
space
Disadvantages of DVCS

8. ● Location in which data is stored and managed
○ Central location
○ Distributed location
Repository

9. ● Centralized VCS
○ List of file based changes
● Distributed VCS
○ Set of snapshots of a miniature filesystem
Data Storage in a repository

10. ● Difference between same file in different versions of a VCS
● Eg :-
What is a Diff?

11. ● Distributed revision control system
● Designed and developed by Linus Torvalds
● A Git working repository is a fully-fledged repository
● Distributed under GNU General Public License version 2
Git

12. ● Development began in April 2005
● BitKeeper - A proprietary source control management system
● Necessity of an distributed open source SCM
● Other design Criterias
○ Take Concurrent Versions System (CVS) as an example of what not to
do; if in doubt, make the exact opposite decision
○ Support a distributed, BitKeeper-like workflow
○ Very strong safeguards against corruption, either accidental or
malicious
● “The unpleasant person”
Evolution of Git

13. Linus Torvalds Junio Hamano

14. ● Bazaar
● Mercurial
● Monotone
Other softwares like Git

15. ● Command-line method
○ git init
○ git init <reponame>
○ git --bare init
Make your first git repository

16. ● SVN Checkout and Git Clone
● SVN Update and Git Pull
● SVN Commit and Git commit & push
Confusions of a Subversion user

17. ● git add .
● git commit
● git push
Your first commit

18. ● Tell Git who you are
○ git config --global user.name "Sam Smith"
○ git config --global user.email sam@example.com
● Create a new local repository
○ git init
● Checkout a repository
○ git clone /path/to/repository
○ git clone username@host:/path/to/repository
● Add files
○ git add <filename>
○ git add .
Git common commands

19. ● Commit
○ git commit -m “commit message”
○ git commit -a
● Push
○ git push origin master
● Status
○ git status
● Connect to a remote repository
○ git remote add origin <server>
○ git remote -v
Git common commands (Contd.)

20. ● Branches
○ git checkout -b <branchname>
○ git checkout <branchname>
○ git branch
○ git branch -d <branchname>
○ git push origin <branchname>
○ git push --all origin
○ git push origin :<branchname>
Git common commands (Contd.)

21. ● Update from the remote repository
○ git pull
○ git merge <branchname>
○ git diff
○ git diff --base <filename>
○ git diff <sourcebranch> <targetbranch>
○ git add <filename>
● Tags
○ git tag 1.0.0 <commitID>
○ git log
○ git push --tags origin
Git common commands (Contd.)

22. ● Undo local changes
○ git checkout -- <filename>
○ git fetch origin
○ git reset --hard origin/master
● Search
○ git grep "foo()"
Git common commands (Contd.)

23. ● Creating a new repository
● Cloning a remote repository
Git for subversion users

24. ● Inspecting history
● Committing local changes
○ Inspect your local changes
Git for subversion users (Contd.)

25. ● Committing local changes
○ add/remove changed files
○ commit your changes
Git for subversion users (Contd.)

26. ● Sharing & collaborating
Git for subversion users (Contd.)

28. Thank You
&
Next Presentation will be on
unit testing