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git refresher

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Paweł Radecki�With love for geeksessions.io�At Loule 2nd April 2025

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git refresher

…or a short story of very important values in engineering…�

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git refresher

…or a short story of very important values in engineering…��reverse engineering �intrinsic motivation, �self-learning yet another technology �and digging for truth�

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git refresher

Git experienced I-know-all-basics-well users go to chapter 4�

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Once upon a time…

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Once upon a time…�…I was kicked out of project and wanted to use between project time to share knowledge…

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Once upon a time…�…I was kicked out of project and wanted to use between project time to share knowledge…�…because I love sharing knowledge and experience to confront it with others to know the truth

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What is git vs. GitHub / gittea / forgejo ?�What was it created for?�Why has it become de-facto standard of version control?�Why is it so confusing?��

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What is git?�What was it created for?�Why has it become de-facto standard of version control?�Why is it so confusing?��My inner child wants never to stop asking questions�

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What is git?�What was it created for?�Why has it become de-facto standard of version control?�Why is it so confusing?��My inner child wants never to stop asking questions�My curious self keeps scribbling and brain dumping observing all possible questions arriving

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Git�basic �concepts�and �commands

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repository�commit�Directed Acyclic Graph, version graph�branch�HEAD�garbage collection����

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Let’s connect �and check� some repository…�…with tmate����

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git clone� init� add� commit� checkout� merge

rebase

cherry-pick� pull� push [--force]����

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Let’s try some �commands locally…�…with tmate����

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Github

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Let’s collaborate�on GitHub��- Agree on workflow - feature branch�- Write README.md�- Write fizz_buzz API & stub�- Write dummy fizz_buzz[.rb] for 1 < n < 4�- Write fizz_buzz[.rb] for any n�- Write fizz_buzz_test[.rb]

- Fix bugs if test finds them�

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Challenge yourself

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Basics�https://gitimmersion.com�https://github.com/eficode-academy/git-katas�https://ohmygit.org/��Intermediate�https://learngitbranching.js.org��Advanced�https://github.com/nnja/advanced-git/tree/master/exercises

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Questions?�Ask anything about git now�Or later by discord/signal/e-mail

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THANK YOU

Paweł Radecki @GeekSessions Discord

Signal: @paweljradecki.12

E-mail: pawel.j.radecki@gmail.com

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