The document provides an overview of Git, a distributed version control system created by Linus Torvalds, highlighting its key features and advantages over traditional systems like CVS and SVN. It covers basic Git commands for repository management, including setup, committing changes, branching, merging, and handling common situations. Additionally, it offers resources for further learning about Git commands and best practices.

1. Git Basics
Md. Emran Ul Hadi
Software Engineer
WNeeds Ltd

2. What we'll cover
• Concept of Version control system
• Concept of Git
• Some basic commands

3. Version control
Most used Concurrent version system(CVS) and
Subversion(SVN).
Key concepts:
• Central source control system
• users check code into server
• requires connection to the server to perform commits,
updates etc.

4. Git ???????
• Distributed Version Control System
• Like sub-version but better...
• Created by Linus Torvald

5. WHY Git??????
Distributed repository
• Self contained
• Full history of commit
• You can commit/branch/merge locally
• Read fast and offline
• No "latest revision": revision unique ID

6. Get Started

7. Git Started
getting started
• move to a directory with code you’d like to manage
with git:
# git init
• you’ve now created your first git repository!
For remote repository access:
# git clone remote_git_repository_url
Example:
# git clone git@github.com:mobbazaar/api

8. Work Flow

9. Useful basics commands
git init ‣ repository setup
git add ‣ add files to queue for next commit
git commit ‣ commit queued files
git push ‣ push commit(s) to remote repository
git pull ‣ fetch changes from remote repository
git clone ‣ clone repository into a local directory
.gitignore ‣ ignore specific files by adding them here

10. Continue...
git status ‣ Show uncommited changes
git rm ‣ Remove a file from a repository
git mv ‣ Move a file within repository
git diff ‣ Generate a differences between
multiple commits
git log ‣ View a log of commits

11. Git Level

12. Branches

13. Branching
git branch new_branch create new branch
git branch -b feature2 create new branch and switch
to that branch
git commit save some work
git checkout master switch back
git merge feature2 work is merged in
git rebase feature2 work played on top
git branch -d feature2 delete branch

14. tagging and merging
git merge branch_name Merge changes from
branch_name to the current
branch
git tag -a name Add a tag with a indicated
name
git tag -l List tags
git push --tags Push tags to remote
repository

15. Handling Some critical situation
• Changing your last commit
# git commit --amend
• Unstaging a staged File
# git reset HEAD FILE_NAME
• Unmodifying a modified File
# git checkout -- FILE_NAME

16. Some rules have to follow
• NEVER pull when you have uncommitted changes - commit
your work first.
• First PULL then PUSH
• If working on a feature, use a local branch, then this
leaves the master open for other fixes.

17. Let's
Discuss

18. Resources
• http://gitref.org [For basics commands]
• http://progit.org/book/
• http://www.slideshare.net/search/slideshow?
searchfrom=header&q=git