Packages:

sudo apt install git

To login via GitHub install gh:

sudo apt install gh

Login to GitHub via (just follow the prompts)

gh auth login

Config username and email: → add –global option to just configure the login for one specific repository/directory

git config user.email "<email-address>"

git config user.name "<github-username>"

Replace email-address with your GitHub email and github-username with your username.

Change to the highest directory of your project, then intialize repository:

git init

Add the remote:

git remote add origin '<url>'

In case of GitHub <url> for example can be https://github.com/<username>/<repository>/.

Add files to commit:

git add /path/to/file(s)

View status of changes:

git status

Before starting to edit, sync external changes:

git fetch <remote-repo>

git pull origin <branch>

Create commit:

git commit -vs

Or use the more simplier command:

git commit -m <message>

Push changes:

git push origin <branch>

Replace branch with the concerning branch, e.g. main.

Reset to previous commit (deletes all changes, use stash before to save changes and only delete the commit itself):

git reset --hard <commit>

To then push changes/reset:

git push --force

Merge:

git merge

Rebase:

git rebase

Differences:

Sourced from: stackoverflow.com - git merge & git rebase