Git & GitHub

Renee LIN
2 min readJul 13, 2020


GitHub is a well known website, even among non-tech people. It is built around Git to help developers from all over the world collaborate on a same project, in a organized way.

What is Git?

It is a version control system.

For example, if you are writing a article, you update it regularly with non-trival modification, when you save your file, you don’t want to overwrite it just in case you might change your mind and go back to previous version. Instead of creating many files names ended with v1, v2, v3… you find a software to record the changes.

Git is a software recording all the changes your team-member and you make.

How to use Git?

We use command line to setup a Git repository and record different changes. There are also visual tools to interact with Git repo, but command line is neat. Several important commands are listed below.

git init create/setup repo locally

git clone— copy repo remotely

git add — add new changes, which means staging the changes

git commit confirm the staged changes, create a snapshot

git push — push the committed changes to remote repo

git pull — pull new changes from repo, align with new versions of the codes

git merge — merge different version of the same file

git status — check the current modification, stage, commit information

git remote — check remote repo information

git branch — check, create branches

git reset — reset to status before staging, soft reset to staged period

GitHub Flow

GitHub is a hosting service, the local repositories got to be hosted here allowing cooperation among developers.

A typical working flow is introduced in this interactive tutorial:

which covers the steps from create new branches, making changes and commit, open a pull request in order to merge the changes to master branch, discussion on the new changes and deploy to test, finally commit and merge to the master.



Renee LIN

Passionate about web dev and data analysis. Huge FFXIV fan. Aiming to work with healthcare data for a living in 2024.