M.Mozūras - git

Jun 3, 20120 likes592 views

1. Git is a distributed version control system that allows for faster workflows, easier branching and merging, and a more flexible model than other VCSs like SVN. 2. Git uses snapshots of the project rather than file differences, making it very efficient. It also allows users to work offline and has fast operations. 3. Common Git commands include add, commit, branch, merge, pull and push. Users can also rewrite history through commands like rebase, commit --amend, and interactive rebasing.

git
or: how I learned to stop
worrying and love source control

Traditional version control
systems have deficiencies

OH, T
SLOW HE PA
TREE CONFLICTS IN!
MERGING IS CHALLENGING
BRANCHES ARE JUST COPIES

It’s distributed!
Distributed Version Control System

add status diff log commit branch

git mercurial bazaar

Very efficient.

git clone rails - 53 seconds
40mb, 2356 files, 29045 commits

Linus Torvalds Blessed repository

Lieutenants

Developers

Linux:
apt-get install git-core
Mac OS X:
brew install git
Windows:
chocolatey install msysgit

git config --global user.name ...
git config --global user.email ...

master has no special meaning.
It’s just a default branch.

Staging area stores info about
what will go into next commit.

working
staging area repository
directory
checkout the project

stage files

commit

Commit “name” is a 40-digit SHA
189f30b664981e4397625791c8ea3bbb5f2279a3

commit 189f30b...
tree e8455...
parent(s) nil
author Mindaugas...
committer Mindaugas...
Initial commit

SVN, CVS, Perforce store
differences between commits.

commit0 commit1 commit2
tree0 tree1 tree2
blob A blob A blob A2
blob B blob B2 blob B2

Branch is a reference to the
head of a line of work.

merge is fine, but in a lot of
cases, rebase is better.

Interactive rebase lets you:
reword, edit, squash, fixup,
exec, remove and reorder.

Be carefu
l!
You can change history of remote
repository with git push --force.

More than
1.6 million people,
2.8 million repositories.

blame bisect cherry-pick clean
cvsimport describe diff fetch
filter-branch grep request-pull
revert svnimport stash
submodule tag and more...

RES
git-scm.com OUR
gitready.com CES
gitimmersion.com
ontwik.com/category/git-github

The slogan of Subversion for a
while was "CVS done right". If you
start with that kind of slogan,
there's nowhere you can go. There
is no way to do CVS right.
Linus Torvalds

thanks to:
Zach Holman @holman
thenounproject.com

thanks!
codingfearlessly.com
twitter.com/mmozuras
github.com/mmozuras

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