Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Git: Beyond the Basics
Search
John Bohn
July 10, 2012
Programming
4
190
Git: Beyond the Basics
John Bohn
July 10, 2012
Tweet
Share
More Decks by John Bohn
See All by John Bohn
SOLID Design Principles in Ruby
jjbohn
2
100
Other Decks in Programming
See All in Programming
GoのIteratorに詳しくなってしまう
inatonix
1
200
LangChainの現在とv0.3にむけて
os1ma
4
920
How to Break into Reading Open Source
kaspth
2
210
AndroidアプリのUIバリエーションをあの手この手で確認する / Check UI variations of Android apps by various means
tkmnzm
1
170
Lessons by WebAssembly app in production on CDN Edge Computing Service
tetsuharuohzeki
0
210
LangChainでWebサイトの内容取得やGitHubソースコード取得
shukob
0
160
[DroidKaigi 2024] Android ViewからJetpack Composeへ 〜Jetpack Compose移行のすゝめ〜 / From Android View to Jetpack Compose: A Guide to Migration
syarihu
1
630
Rubyとクリエイティブコーディングの輪の広がり / The Growing Circle of Ruby and Creative Coding
chobishiba
1
270
RAGの回答精度評価用のQAデータセットを生成AIに作らせた話
kurahara
0
250
マルチモジュールにおけるテスト最適化
fxwx23
0
210
状態管理ライブラリZustandの導入から運用まで
k1tikurisu
3
470
GraphQLの魅力を引き出すAndroidクライアント実装
morux2
3
660
Featured
See All Featured
Practical Orchestrator
shlominoach
185
10k
Large-scale JavaScript Application Architecture
addyosmani
508
110k
A designer walks into a library…
pauljervisheath
201
24k
GitHub's CSS Performance
jonrohan
1030
450k
How To Stay Up To Date on Web Technology
chriscoyier
786
250k
Bash Introduction
62gerente
608
210k
Speed Design
sergeychernyshev
22
430
[Rails World 2023 - Day 1 Closing Keynote] - The Magic of Rails
eileencodes
28
1.6k
The Power of CSS Pseudo Elements
geoffreycrofte
71
5.3k
Faster Mobile Websites
deanohume
304
30k
Being A Developer After 40
akosma
84
590k
Evolution of real-time – Irina Nazarova, EuRuKo, 2024
irinanazarova
0
120
Transcript
gitbeyond the basics Thursday, August 2, 12
John Bohn @jjbohn Thursday, August 2, 12
Developer at OpenSky curated social commerce Thursday, August 2, 12
git what is Thursday, August 2, 12
git is fast and lightweight free/open source distributed crazy simple
Thursday, August 2, 12
init branch add commit merge Thursday, August 2, 12
Almost any VCS works does this (more or less) What
is special about git? Thursday, August 2, 12
Interactivity Thursday, August 2, 12
git add --patch git add --interactive Thursday, August 2, 12
Arduino Example Thursday, August 2, 12
Change Blink Thursday, August 2, 12
Change Blink - Two logical changes - Don’t want to
bother undoing one - Can’t git add . or git add [file] Thursday, August 2, 12
git add --patch Thursday, August 2, 12
git add --patch Thursday, August 2, 12
git add --patch Thursday, August 2, 12
git add --patch Commit the change Thursday, August 2, 12
git add --patch Stage other changes Diff is now empty
(everything is staged or commited) Thursday, August 2, 12
git stash Thursday, August 2, 12
is super boring Thursday, August 2, 12
until you throw some flags at it... Thursday, August 2,
12
git stash --no-keep-index git stash --keep-index git stash --patch git
stash --include-untracked My Favorites Thursday, August 2, 12
Finding these commands is just a matter of digging Thursday,
August 2, 12
git anything --help Thursday, August 2, 12
git reset is not git revert Thursday, August 2, 12
git reset --soft [sha] git reset --hard [sha] git reset
--mixed [sha] Thursday, August 2, 12
You can also: git reset --patch (but not with those
modes) Thursday, August 2, 12
Bisecting aka: Finding a commit that screwed things up. Thursday,
August 2, 12
Bisecting Thursday, August 2, 12
Bisecting 7b35b 91296 9680d 2ab1f c6d43 6 Commits - One
Bug We know that 7b35b is good We know that cfc332 is bad But we have no idea where the bug was introduced cfc332 Thursday, August 2, 12
Bisecting 7b35b 91296 9680d 2ab1f c6d43 Tell git what is
known good and bad cfc332 good bad Thursday, August 2, 12
Bisecting 7b35b 91296 9680d 2ab1f c6d43 cfc332 good bad Thursday,
August 2, 12
Bisecting 7b35b 91296 9680d 2ab1f c6d43 cfc332 good bad good
Thursday, August 2, 12
Bisecting 7b35b 91296 9680d 2ab1f c6d43 cfc332 good bad good
good Thursday, August 2, 12
Bisecting 7b35b 91296 9680d 2ab1f c6d43 cfc332 good bad good
good 2ab1f is most likely good because the commit after it is Thursday, August 2, 12
Bisecting 7b35b 91296 9680d 2ab1f c6d43 cfc332 good bad good
good bad Thursday, August 2, 12
Bisecting 7b35b 91296 9680d 2ab1f c6d43 cfc332 good bad good
good bad bad Thursday, August 2, 12
Recovering lost commits Thursday, August 2, 12
git reflog Thursday, August 2, 12
git reflog Technically shows any action where the tip of
a branch is modified git reflog --all shows stashes, bisects, etc. Thursday, August 2, 12
Recovery Let’s say I reset --hard and wiped out the
commit that changed my LED to pin 10 Use combination of reflog and cherry-pick to get it back Thursday, August 2, 12
Recovery Found it! 3ecdba3 Thursday, August 2, 12
Recovery Double check that 3ecdba3 is really the commit we
want git diff 3ecdba3^.. 3ecdba3 Shows me the difference between the commit I want to cherry pick and the commit prior. Thursday, August 2, 12
git cherry-pick Now cherry pick 3ecdba3 into our working tree
Note: the sha has changed because this commit now has a different parent than it did when it was recorded into the reflog Thursday, August 2, 12
Recovery Checkout the reflog again to see the cherry-pick Thursday,
August 2, 12
Interactive Rebasing Changing the past one commit at a time
Thursday, August 2, 12
git rebase -i [commit] Thursday, August 2, 12
git rebase -i [commit] Thursday, August 2, 12
git rebase -i [commit] Thursday, August 2, 12
git rebase -i [commit] Thursday, August 2, 12
Interactive rebase Thursday, August 2, 12
git internals The plumbing and the porcelain Thursday, August 2,
12
git internals git stores snapshots, not differences Storing differences is
slow and inflexible CVS/Subversion git Thursday, August 2, 12
git internals git stores snapshots, not differences Storing differences is
slow and inflexible CVS/Subversion git Thursday, August 2, 12
git internals What does a commit look like? Thursday, August
2, 12
git internals Let’s investigate a repo Sorry for the bad
“investigation” image ;-) Thursday, August 2, 12
Thanks! Come work with me at OpenSky! We’re Hiring Thursday,
August 2, 12