Git tutorial

+Distributed Version Control

Nuttapon Pattanavijit

Reference

• http://git-scm.com

• https://www.atlassian.com/git/tutorial

1. WTF is Version Control ?

Collaboration

If someone blow up your code!

what will you do if you use something like dropbox?

Snapshot sounds good

Snapshot sounds good?

Local Version Control

Centralized Version Control Systems

Distributed Version Control Systemgit is DVCS

2. Git?

History of Git

• Developed for Linux Kernel project.

• Speed, Simple design

• Non-linear development

• Fully distributed

• Able to handle large projects

Snapshot of project over time

basically takes a picture of what all your files look like at that moment and stores a reference to that snapshot. To be efficient, if files have not changed, Git doesn’t store the file again—just a link to the previous identical file it has already stored.

Git workflow

1. You modify files in your working directory.

2. You stage the files, adding snapshots of them to your staging area.

3. You do a commit, which takes the files as they are in the staging area and stores that snapshot permanently to your Git directory.

3. Git Basic

Git Basic

git init initializes new repository

git clone create a copy

Git Basic

Git Basic

git add add files to staging

git commit snapshot project

4. Undoing changes

Undoing Changesgit checkout previous version

git revert undo committed snapshot

git reset undo changes in working directory

5. Branching

git branch testing

git checkout testing

git commit -a -m “made a change”

git checkout master

git commit -a -m “made other changes”

6. Merging

git checkout mastergit merge iss53

git checkout mastergit merge iss53

If two branches edit same file?

How to handle merge conflict?

7. Remote Repositories

Demo

Remote Repositories

git pull fetch + merge into current branch

git push update local repo to remote repo

8. Feature Branch Workflow

git checkout -b my_feature master

=git checkout master

git branch my_feature

git push -u origin master

git pull

git push -u origin my_featuregit checkout master

git pullgit merge my_feature

git push