Zeger-Jan van de Weg Starting with git and GitLab · Lets use the terminal again. Working together...

Starting with git and GitLabZeger-Jan van de Weg

What is git?

Version Control System

- Contains history of the codebase

- Directed graph state to all other states

- Offline

- But online single source of truth

- Distributed

- Using snapshots

● (I use the CLI exclusively recommend you to do the same)

Let’s get started

● Diverge from a chosen point in history

○ Isolates changes

○ Feature branches

○ git can track how to merge

Branching

New Branch

● $ git branch iss53

● $ git checkout iss53

After one commit

Another feature branch

● $ git checkout -b hotfix

● $ vim email.rb

● $ git commit -a -m ‘Fixed the broken email address’

Basic merge - Fast forward merging

● $ git checkout master

● $ git merge hotfix

Basic merge - Merge commit

● $ git checkout master

● $ git merge iss53

○ How does git resolve this?

Basic merge - Merge commit

● Cleanup:

○ $ git branch --delete iss53

Basic merge - Merge Conflicts

● What if multiple commits edit the same file?

○ Merge conflicts!

● Lets use the terminal again

Working together

● You need a source of truth

○ GitLab!

● First, let’s setup GitLab for our team

Working with Remotes

● $ git remote add git@git.science.uu.nl:group/project.git

● $ git push

○ $ git clone

Syncing changes

● Your changes to upstream

○ $ git push --set-upstream origin <branch-name>

● Pulling changes from upstream

○ $ git pull

●

Questions?

● Further reading:

○ ProGit

○ GitLab Flow

● Feature Proposals || Bugs

○ https://gitlab.com/gitlab-org/gitlab-ce/issues

● Email: zegerjan@gitlab.com