The everyday developer's guide to version control with Git

The everyday developer’s guide to version control with git

so, what’s git?

“ Git is distributed version control system focused on speed, effectivity and real- world usability on large projects. - git-scm.com

basic source control system (example) http://hoth.entp.com/output/git_for_designers.html

but why git?

lots of people use it (it’s common) http://en.wikipedia.org/wiki/Git_(software)

let’s git started

create (initialize) a repository $ cd (project-directory) $ git init Initialized empty Git repository in .git/

your ﬁrst save (commit) $ git commit -m 'Initial commit'

create some ﬁles $ touch README

see what’s changed $ git status # On branch master # # Initial commit # # Untracked files: # (use "git add <file>..." to include in what will be committed) # # README nothing added to commit but untracked files present (use "git add" to track)

adding files Adding a individual file $ git add README Adding a multiple files $ git add .

see what’s changed (again) $ git status # On branch master # # Initial commit # # Changes to be committed: # (use "git rm --cached <file>..." to unstage) # # new file: README #

save (commit) your changes $ git commit -m 'Added README file' Created initial commit c1195b5: Added README file 0 files changed, 0 insertions(+), 0 deletions(-) create mode 100644 README

check your history $ git log commit c1195b51d6e99dcc6e88b6ae44eea20ba1f0868e Author: Erin Carter <me@erincarter.com> Date: Thu Oct 29 12:21:24 2009 -0500 Added README file

developing with git

undoing your changes $ git checkout README

reverting to speciﬁc version $ git checkout 3607253d20c7a295965f798109f9d4af0fbeedd8 <file name>

reverting back $ git reset HEAD <file name>

developing parallel with branching http://hoth.entp.com/output/git_for_designers.html

create a branch $ git checkout -b bugfix Switched to a new branch “bugfix”

switching branches $ git status # On branch bugfix nothing to commit (working directory clean) $ git checkout master Switched to branch “master”

collaborating with git

public repos = free private repos = cheap http://github.com

clone a hosted repository $ git clone git://github.com/git/hello- world.git Initialized empty Git repository in /Users/me/Projects/hello- world/.git/ remote: Counting objects: 158, done. remote: Compressing objects: 100% (79/79), done. remote: Total 158 (delta 54), reused 157 (delta 54) Receiving objects: 100% (158/158), 15.62 KiB, done. Resolving deltas: 100% (54/54), done. $ cd hello-world

pull changes (and pull often) $ git pull origin master

add changes to master $ git checkout master $ git merge bugfix

push changes $ git push origin master

conﬁgure & customize git

conﬁguring $ git config --global user.name "Erin Carter" $ git config --global user.email "me@erincarter.com"

add pretty colors $ git config --global color.diff auto $ git config --global color.status auto $ git config --global color.branch auto

git tools

gitk usually comes with git - http://gitk.sourceforge.net/

GitX http://gitx.frim.nl

TortoiseGit http://code.google.com/p/tortoisegit/

git resources

Pro Git (book) free online at http://progit.org/book/

Pragmatic Version Control Using Git (book) http://www.pragprog.com/titles/tsgit/pragmatic-version-control-using-git

Git Community Book http://book.git-scm.com/

Git Cheat Sheet http://ktown.kde.org/~zrusin/git/git-cheat-sheet-large.png

what to remember ‣ commit often ‣ pull often ‣ use checkout and reset with caution ‣ create your own repository anywhere http://hoth.entp.com/output/git_for_designers.html

@erincarter me@erincarter.com linkedin.com/in/erincarter illustrations by Simon Oxley of idokungfood.com theme inspired by Scott Chacon’s git-scm.com

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The everyday developer's guide to version control with Git

by E Carter on Oct 30, 2009

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