intro to git - cs.uns.edu.armc/disenio/downloads/talleres/2019 - charla git - lisandro perez... ·...
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Intro to GitScott Chacon
What is Git?
Git is an open source, distributed version control system designed for speed
and efficiency
Git is an open source, distributed version control system designed for speed
and efficiency
git-scm.com
Git is an open source, distributed version control
system designed for speed and efficiency
Fully Distributed
(almost) everything is local
which means
which means
everything is fast
which means
everything is fast
every clone is a backup
which means
everything is fast
every clone is a backup
work offline
Git is an open source, distributed version control
system designed for speed and efficiency
Immutable
(almost) never removes data
Snapshots, not Patches
deltastorage
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snapshotstorage
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snapshotstorage
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snapshotstorage
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snapshotstorage
deltastorage
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snapshotstorage
deltastorage
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deltastorage
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deltastorage
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snapshotstorage
How is this DifferentThan {cvs|svn|p4}?
Git Ist Schnell!
No Network Needed
No Network Needed
Performing a diff
No Network Needed
Performing a diff
Viewing file history
No Network Needed
Performing a diff
Viewing file history
Committing changes
No Network Needed
Performing a diff
Viewing file history
Committing changes
Merging branches
No Network Needed
Performing a diff
Viewing file history
Committing changes
Merging branches
Obtaining any other revision of a file
No Network Needed
Performing a diff
Viewing file history
Committing changes
Merging branches
Obtaining any other revision of a file
Switching branches
jQuery tests
Work Offline
No .svn Directories
Cheap Branching
$ du -h testrepo/ 78M testrepo/$ cd testrepo/$ time git checkout -b newbranchSwitched to a new branch "newbranch"
real 0m0.091suser 0m0.016ssys 0m0.023s
$ du -h testrepo/ 78M testrepo/$ cd testrepo/$ time git checkout -b newbranchSwitched to a new branch "newbranch"
real 0m0.091suser 0m0.016ssys 0m0.023s
$ du -h testrepo/ 78M testrepo/$ cd testrepo/$ time git checkout -b newbranchSwitched to a new branch "newbranch"
real 0m0.091suser 0m0.016ssys 0m0.023s
$ du -h testrepo/ 78M testrepo/$ cd testrepo/$ time git checkout -b newbranchSwitched to a new branch "newbranch"
real 0m0.091suser 0m0.016ssys 0m0.023s
$ du -h testrepo/ 78M testrepo/$ cd testrepo/$ time git checkout -b newbranchSwitched to a new branch "newbranch"
real 0m0.091suser 0m0.016ssys 0m0.023s
$ time cp -Rf testrepo r2
real0m13.684suser0m0.085ssys 0m1.215s
Easy Merging
How Do I Use Git?
First Steps
$ git config --global user.name “Scott Chacon”
$ git config --global user.email “schacon@gmail.com”
Getting A Repo
git init
$ touch hello_world.rb$ git init$ git add .$ git commit -m ‘first commit’
$ touch hello_world.rb$ git init$ git add .$ git commit -m ‘first commit’
$ tree -a.|-- .git| |-- HEAD| |-- branches| |-- config| |-- description| |-- hooks| | |-- post-commit.sample| | |-- post-receive.sample| | |-- ...| | |-- pre-rebase.sample| | `-- update.sample| |-- info| | `-- exclude| |-- objects| | |-- info| | `-- pack| |-- refs| | |-- heads| | `-- tags| `-- remotes`-- hello_world.rb
11 directories, 25 files
$ tree -a.|-- .git| |-- HEAD| |-- branches| |-- config| |-- description| |-- hooks| | |-- post-commit.sample| | |-- post-receive.sample| | |-- ...| | |-- pre-rebase.sample| | `-- update.sample| |-- info| | `-- exclude| |-- objects| | |-- info| | `-- pack| |-- refs| | |-- heads| | `-- tags| `-- remotes`-- hello_world.rb
11 directories, 25 files
$ tree -a.|-- .git| |-- HEAD| |-- branches| |-- config| |-- description| |-- hooks| | |-- post-commit.sample| | |-- post-receive.sample| | |-- ...| | |-- pre-rebase.sample| | `-- update.sample| |-- info| | `-- exclude| |-- objects| | |-- info| | `-- pack| |-- refs| | |-- heads| | `-- tags| `-- remotes`-- hello_world.rb
11 directories, 25 files
git clone
$ git clone
$ git clone git://github.com/schacon/grit.git
$ git clone git://github.com/schacon/grit.git mygrit
$ git clone git://github.com/schacon/grit.git mygritInitialized empty Git repository in /home/schacon/mygrit/.git/remote: Counting objects: 3220, done.remote: Compressing objects: 100% (2093/2093), done.remote: Total 3220 (delta 1134), reused 3149 (delta 1081)Receiving objects: 100% (3220/3220), 1.79 MiB | 357 KiB/s, done.Resolving deltas: 100% (1134/1134), done.
$ git clone git://github.com/schacon/grit.git mygritInitialized empty Git repository in /home/schacon/mygrit/.git/remote: Counting objects: 3220, done.remote: Compressing objects: 100% (2093/2093), done.remote: Total 3220 (delta 1134), reused 3149 (delta 1081)Receiving objects: 100% (3220/3220), 1.79 MiB | 357 KiB/s, done.Resolving deltas: 100% (1134/1134), done.
$ cd mygrit$
$ git clone git://github.com/schacon/grit.git mygritInitialized empty Git repository in /home/schacon/mygrit/.git/remote: Counting objects: 3220, done.remote: Compressing objects: 100% (2093/2093), done.remote: Total 3220 (delta 1134), reused 3149 (delta 1081)Receiving objects: 100% (3220/3220), 1.79 MiB | 357 KiB/s, done.Resolving deltas: 100% (1134/1134), done.
$ cd mygrit$ lsAPI.txt Manifest.txtREADME.txt benchmarks.rb examples libHistory.txt PURE_TODORakefile benchmarks.txt grit.gemspectest$
The Git Directory
git init
$ tree -a.|-- .git| |-- HEAD| |-- branches| |-- config| |-- description| |-- hooks| | |-- post-commit.sample| | |-- post-receive.sample| | |-- ...| | |-- pre-rebase.sample| | `-- update.sample| |-- info| | `-- exclude| |-- objects| | |-- info| | `-- pack| |-- refs| | |-- heads| | `-- tags| `-- remotes`-- hello_world.rb
11 directories, 25 files
$ tree -a.|-- .git| |-- HEAD| |-- branches| |-- config| |-- description| |-- hooks| | |-- post-commit.sample| | |-- post-receive.sample| | |-- ...| | |-- pre-rebase.sample| | `-- update.sample| |-- info| | `-- exclude| |-- objects| | |-- info| | `-- pack| |-- refs| | |-- heads| | `-- tags| `-- remotes`-- hello_world.rb
11 directories, 25 files
Areas of Interest
$ tree -a.|-- .git| |-- HEAD| |-- branches| |-- config| |-- description| |-- hooks| | |-- post-commit.sample| | |-- post-receive.sample| | |-- ...| | |-- pre-rebase.sample| | `-- update.sample| |-- info| | `-- exclude| |-- objects| | |-- info| | `-- pack| |-- refs| | |-- heads| | `-- tags| `-- remotes`-- hello_world.rb
11 directories, 25 files
/etc/gitconfig
/etc/gitconfig
~/.gitconfig
/etc/gitconfig
~/.gitconfig
.git/config
$ tree -a.|-- .git| |-- HEAD| |-- branches| |-- config| |-- description| |-- hooks| | |-- post-commit.sample| | |-- post-receive.sample| | |-- ...| | |-- pre-rebase.sample| | `-- update.sample| |-- info| | `-- exclude| |-- objects| | |-- info| | `-- pack| |-- refs| | |-- heads| | `-- tags| `-- remotes`-- hello_world.rb
11 directories, 25 files
$ tree -a.|-- .git| |-- HEAD| |-- branches| |-- config| |-- description| |-- hooks| | |-- post-commit.sample| | |-- post-receive.sample| | |-- ...| | |-- pre-rebase.sample| | `-- update.sample| |-- info| | `-- exclude| |-- objects| | |-- info| | `-- pack| |-- refs| | |-- heads| | `-- tags| `-- remotes`-- hello_world.rb
11 directories, 25 files
$ tree -a.|-- .git| |-- HEAD| |-- branches| |-- config| |-- description| |-- hooks| | |-- post-commit.sample| | |-- post-receive.sample| | |-- ...| | |-- pre-rebase.sample| | `-- update.sample| |-- info| | `-- exclude| |-- objects| | |-- info| | `-- pack| |-- refs| | |-- heads| | `-- tags| `-- remotes`-- hello_world.rb
11 directories, 25 files
$ touch hello_world.rb$ git init$ git add .$ git commit -m ‘first commit’
$ touch hello_world.rb$ git init$ git add .$ git commit -m ‘first commit’
$ tree -a.|-- .git| |-- COMMIT_EDITMSG| |-- HEAD| |-- branches| |-- config| |-- description| |-- hooks| | |-- applypatch-msg.sample| | `-- update.sample| |-- index| |-- info| | `-- exclude| |-- logs| | |-- HEAD| | `-- refs| | `-- heads| | `-- master| |-- objects| | |-- 32/09658ac8d80bc9726d3a33d77e3dfc5fe6035e| | |-- 53/9cd7886a627841d525a78d45cbc6396be20b41| | |-- e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391| | |-- info| | `-- pack| |-- refs| | |-- heads| | | `-- master| | `-- tags| `-- remotes`-- hello_world.rb
17 directories, 33 files
$ tree -a.|-- .git| |-- COMMIT_EDITMSG| |-- HEAD| |-- branches| |-- config| |-- description| |-- hooks| | |-- applypatch-msg.sample| | `-- update.sample| |-- index| |-- info| | `-- exclude| |-- logs| | |-- HEAD| | `-- refs| | `-- heads| | `-- master| |-- objects| | |-- 32/09658ac8d80bc9726d3a33d77e3dfc5fe6035e| | |-- 53/9cd7886a627841d525a78d45cbc6396be20b41| | |-- e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391| | |-- info| | `-- pack| |-- refs| | |-- heads| | | `-- master| | `-- tags| `-- remotes`-- hello_world.rb
17 directories, 33 files
$ tree -a.|-- .git| |-- COMMIT_EDITMSG| |-- HEAD| |-- branches| |-- config| |-- description| |-- hooks| | |-- applypatch-msg.sample| | `-- update.sample| |-- index| |-- info| | `-- exclude| |-- logs| | |-- HEAD| | `-- refs| | `-- heads| | `-- master| |-- objects| | |-- 32/09658ac8d80bc9726d3a33d77e3dfc5fe6035e| | |-- 53/9cd7886a627841d525a78d45cbc6396be20b41| | |-- e6/9de29bb2d1d6434b8b29ae775ad8c2e48c5391| | |-- info| | `-- pack| |-- refs| | |-- heads| | | `-- master| | `-- tags| `-- remotes`-- hello_world.rb
17 directories, 33 files
A Basic Workflow
A Basic Workflow
Edit files
Stage the changes
Review your changes
Commit the changes
working directory
repository
index
git add
git commit
working directory
repository
index
git add
git commit
a working copy of your project
working directory
repository
index
git add
git commit
object database
working directory
repository
index
git add
git commit
“staging”
A Basic Workflow
Edit files
Stage the changes
Review your changes
Commit the changes
$ find ../app.yaml./index.yaml./main.py
$ find ../app.yaml./index.yaml./main.py
$ find ../app.yaml./index.yaml./main.py
#!/usr/bin/env pythonimport wsgiref.handlersfrom google.appengine.ext import webapp
class MainHandler(webapp.RequestHandler):
def get(self): self.response.out.write('Hello world!')
def main(): application = webapp.WSGIApplication([('/', MainHandler)], debug=True) wsgiref.handlers.CGIHandler().run(application)
if __name__ == '__main__': main()~ ~ "main.py" 16L, 402C
$ vim main.py
#!/usr/bin/env pythonimport wsgiref.handlersfrom google.appengine.ext import webapp
class MainHandler(webapp.RequestHandler):
def get(self): self.response.out.write('Hello world!')
def main(): application = webapp.WSGIApplication([('/', MainHandler)], debug=True) wsgiref.handlers.CGIHandler().run(application)
if __name__ == '__main__': main()~ ~ "main.py" 16L, 402C
$ vim main.py
#!/usr/bin/env pythonimport wsgiref.handlersfrom google.appengine.ext import webapp
class MainHandler(webapp.RequestHandler):
def get(self): self.response.out.write('Hello world!')
def main(): application = webapp.WSGIApplication([('/', MainHandler)], debug=True) wsgiref.handlers.CGIHandler().run(application)
if __name__ == '__main__': main()~ ~ "main.py" 16L, 402C
$ vim main.py
#!/usr/bin/env pythonimport wsgiref.handlersfrom google.appengine.ext import webapp
# this program prints out ‘hello world’
class MainHandler(webapp.RequestHandler):
def get(self): self.response.out.write('Hello world!')
def main(): application = webapp.WSGIApplication([('/', MainHandler)], debug=True) wsgiref.handlers.CGIHandler().run(application)
if __name__ == '__main__': main()~ ~ "main.py" 16L, 402C
$ vim main.py
$ git status
$ git status# On branch master# Changed but not updated:# (use "git add <file>..." to update what will be committed)##modified: main.py#no changes added to commit (use "git add" and/or "git commit -a")
$ git status# On branch master# Changed but not updated:# (use "git add <file>..." to update what will be committed)##modified: main.py#no changes added to commit (use "git add" and/or "git commit -a")
$ git status# On branch master# Changed but not updated:# (use "git add <file>..." to update what will be committed)##modified: main.py#no changes added to commit (use "git add" and/or "git commit -a")
$ git status# On branch master# Changed but not updated:# (use "git add <file>..." to update what will be committed)##modified: main.py#no changes added to commit (use "git add" and/or "git commit -a")
$ git status# On branch master# Changed but not updated:# (use "git add <file>..." to update what will be committed)##modified: main.py#no changes added to commit (use "git add" and/or "git commit -a")
$ git status# On branch master# Changed but not updated:# (use "git add <file>..." to update what will be committed)##modified: main.py#no changes added to commit (use "git add" and/or "git commit -a")
$ git status# On branch master# Changed but not updated:# (use "git add <file>..." to update what will be committed)##modified: main.py#no changes added to commit (use "git add" and/or "git commit -a")
STAGED
$ git status# On branch master# Changed but not updated:# (use "git add <file>..." to update what will be committed)##modified: main.py#no changes added to commit (use "git add" and/or "git commit -a")
STAGED
A Basic Workflow
Edit files
Stage the changes
Review your changes
Commit the changes
git add
working directory
repository
index
git add
git commit
working directory
repository
index
git add
git commit
$ git add main.py$ git status# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)##modified: main.py#
$ git add main.py$ git status# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)##modified: main.py#
$ git add main.py$ git status# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)##modified: main.py#
# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)##modified: main.py#
$ git add main.py$ git status
# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)##modified: main.py#
$ git add main.py$ git status
THAT ARE STAGED
$ vim app.yamlapplication: chaconversion: 1runtime: pythonapi_version: 1
handlers:- url: .* script: main.py~ ~ ~ "app.yaml" 8L, 101C
$ vim app.yamlapplication: chaconversion: 1runtime: pythonapi_version: 1
handlers:- url: .* script: main.py~ ~ ~ "app.yaml" 8L, 101C
$ vim app.yamlapplication: chaconversion: 1runtime: pythonapi_version: 1
handlers:- url: .* script: main.py~ ~ ~ "app.yaml" 8L, 101C
application: chaconversion: 1runtime: pythonapi_version: 1
handlers:- url: .* script: main.py~ ~ ~ "app.yaml" 8L, 101C
$ vim app.yaml
application: chaconversion: 2runtime: pythonapi_version: 1
handlers:- url: .* script: main.py~ ~ ~ "app.yaml" 8L, 101C
$ vim app.yaml
# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: main.py## Changed but not updated:# (use "git add <file>..." to update what will be committed)## modified: app.yaml#
$ git status
# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: main.py## Changed but not updated:# (use "git add <file>..." to update what will be committed)## modified: app.yaml#
$ git status
# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: main.py## Changed but not updated:# (use "git add <file>..." to update what will be committed)## modified: app.yaml#
$ git status
$ vim main.py#!/usr/bin/env pythonimport wsgiref.handlersfrom google.appengine.ext import webapp
# this program prints out ‘hello world’
class MainHandler(webapp.RequestHandler):
def get(self): self.response.out.write('Hello world!')
def main(): application = webapp.WSGIApplication([('/', MainHandler)], debug=True) wsgiref.handlers.CGIHandler().run(application)
if __name__ == '__main__': main()~ ~ "main.py" 16L, 402C
$ vim main.py#!/usr/bin/env pythonimport wsgiref.handlersfrom google.appengine.ext import webapp
# this program prints out ‘hello world’
class MainHandler(webapp.RequestHandler):
def get(self): self.response.out.write('Hello world!')
def main(): application = webapp.WSGIApplication([('/', MainHandler)], debug=True) wsgiref.handlers.CGIHandler().run(application)
if __name__ == '__main__': main()~ ~ "main.py" 16L, 402C
$ vim main.py#!/usr/bin/env pythonimport wsgiref.handlersfrom google.appengine.ext import webapp
# this program prints out ‘hello world’
class MainHandler(webapp.RequestHandler):
def get(self): self.response.out.write('Hello world!')
def main(): application = webapp.WSGIApplication([('/', MainHandler)], debug=True) wsgiref.handlers.CGIHandler().run(application)
if __name__ == '__main__': main()~ ~ "main.py" 16L, 402C
#!/usr/bin/env pythonimport wsgiref.handlersfrom google.appengine.ext import webapp
# this program prints out ‘hello world’
class MainHandler(webapp.RequestHandler):
def get(self): self.response.out.write('Hola world!')
def main(): application = webapp.WSGIApplication([('/', MainHandler)], debug=True) wsgiref.handlers.CGIHandler().run(application)
if __name__ == '__main__': main()~ ~ "main.py" 16L, 402C
$ vim main.py
#!/usr/bin/env pythonimport wsgiref.handlersfrom google.appengine.ext import webapp
# this program prints out ‘hello world’
class MainHandler(webapp.RequestHandler):
def get(self): self.response.out.write('Hola Mundo!')
def main(): application = webapp.WSGIApplication([('/', MainHandler)], debug=True) wsgiref.handlers.CGIHandler().run(application)
if __name__ == '__main__': main()~ ~ "main.py" 16L, 402C
$ vim main.py
# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: main.py## Changed but not updated:# (use "git add <file>..." to update what will be committed)## modified: app.yaml# modified: main.py#
$ git status
# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: main.py## Changed but not updated:# (use "git add <file>..." to update what will be committed)## modified: app.yaml# modified: main.py#
$ git status
# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: main.py## Changed but not updated:# (use "git add <file>..." to update what will be committed)## modified: app.yaml# modified: main.py#
$ git status
# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: main.py## Changed but not updated:# (use "git add <file>..." to update what will be committed)## modified: app.yaml# modified: main.py#
$ git status
Staged
# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: main.py## Changed but not updated:# (use "git add <file>..." to update what will be committed)## modified: app.yaml# modified: main.py#
$ git status
Unstaged
# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: main.py## Changed but not updated:# (use "git add <file>..." to update what will be committed)## modified: app.yaml# modified: main.py#
$ git status
#!/usr/bin/env pythonimport wsgiref.handlersfrom google.appengine.ext import webapp
# this program prints out ‘hello world’
class MainHandler(webapp.RequestHandler):
def get(self): self.response.out.write('Hola Mundo!')
def main(): application = webapp.WSGIApplication([('/' debug=True) wsgiref.handlers.CGIHandler().run(applicat
if __name__ == '__main__': main()
#!/usr/bin/env pythonimport wsgiref.handlersfrom google.appengine.ext import webapp
# this program prints out ‘hello world’
class MainHandler(webapp.RequestHandler):
def get(self): self.response.out.write('Hello World!')
def main(): application = webapp.WSGIApplication([('/' debug=True) wsgiref.handlers.CGIHandler().run(applicat
if __name__ == '__main__': main()
Staged In Working Directory
#!/usr/bin/env pythonimport wsgiref.handlersfrom google.appengine.ext import webapp
# this program prints out ‘hello world’
class MainHandler(webapp.RequestHandler):
def get(self): self.response.out.write('Hola Mundo!')
def main(): application = webapp.WSGIApplication([('/' debug=True) wsgiref.handlers.CGIHandler().run(applicat
if __name__ == '__main__': main()
#!/usr/bin/env pythonimport wsgiref.handlersfrom google.appengine.ext import webapp
# this program prints out ‘hello world’
class MainHandler(webapp.RequestHandler):
def get(self): self.response.out.write('Hello World!')
def main(): application = webapp.WSGIApplication([('/' debug=True) wsgiref.handlers.CGIHandler().run(applicat
if __name__ == '__main__': main()
Staged In Working Directory
You have to stage a file after you edit it
You have to stage a file after you edit it
You have to stage a file after you edit it
$ git status# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: app.yaml# modified: main.py#
$ git add app.yaml main.py
$ git status# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: app.yaml# modified: main.py#
$ git add app.yaml main.py
$ git status# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: app.yaml# modified: main.py#
$ git add app.yaml main.py
A Basic Workflow
Edit files
Stage the changes
Review your changes
Commit the changes
git commit
working directory
repository
index
git add
git commit
working directory
repository
index
git add
git commit
$ git commit
# Please enter the commit message for your changes. Lines starting# with '#' will be ignored, and an empty message aborts the commit.# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: app.yaml# modified: main.py#~ ~ ~ ~ ".git/COMMIT_EDITMSG" 10L, 279C
$ git commit
# Please enter the commit message for your changes. Lines starting# with '#' will be ignored, and an empty message aborts the commit.# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: app.yaml# modified: main.py#~ ~ ~ ~ ".git/COMMIT_EDITMSG" 10L, 279C
$ git commit
# Please enter the commit message for your changes. Lines starting# with '#' will be ignored, and an empty message aborts the commit.# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: app.yaml# modified: main.py#~ ~ ~ ~ ".git/COMMIT_EDITMSG" 10L, 279C
descriptive commit message# Please enter the commit message for your changes. Lines starting# with '#' will be ignored, and an empty message aborts the commit.# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: app.yaml# modified: main.py#~ ~ ~ ~ ".git/COMMIT_EDITMSG" 10L, 279C
$ git commit
descriptive commit message# Please enter the commit message for your changes. Lines starting# with '#' will be ignored, and an empty message aborts the commit.# On branch master# Changes to be committed:# (use "git reset HEAD <file>..." to unstage)## modified: app.yaml# modified: main.py#~ ~ ~ ~ ".git/COMMIT_EDITMSG" 10L, 279C
$ git commit
$ git commitCreated commit 77d3001: descriptive commit message 2 files changed, 4 insertions(+), 2 deletions(-)
A Basic Workflow
Edit files
Stage the changes
Review your changes
Commit the changes
vim / emacs / etc
git add (file)
repo status
git commit
A Basic Workflow
Edit files
Stage the changes
Review your changes
Commit the changes
vim / emacs / etc
git add (file)
repo status
git commit
A Basic Workflow
Edit files
Stage the changes
Review your changes
Commit the changes
vim / emacs / etc
git add (file)
repo status
git commit
A Basic Workflow
Edit files
Stage the changes
Review your changes
Commit the changes
vim / emacs / etc
git add (file)
git status
git commit
A Basic Workflow
Edit files
Stage the changes
Review your changes
Commit the changes
vim / emacs / etc
git add (file)
git status
git commit
cheating...
A Basicerer Workflow
Edit files
Commit the changes
vim / emacs / etc
git commit
A Basicerer Workflow
Edit files
Stage & commit the changes
vim / emacs / etc
git commit -a
A Basicerer Workflow
Edit files
Stage & commit the changes
vim / emacs / etc
git commit -a
What’s going on here?
$ git commitCreated commit 77d3001: descriptive commit message 2 files changed, 4 insertions(+), 2 deletions(-)
$ git commitCreated commit 77d3001: descriptive commit message 2 files changed, 4 insertions(+), 2 deletions(-)
77d3001
77d3001
77d3001a1de6bf8f5e431972fe4d25b01e595c0b
77d3001a1de6bf8f5e431972fe4d25b01e595c0b
77d3001a1de6bf8f5e431972fe4d25b01e595c0b
77d3001a1de6bf8f5e431972fe4d25b01e595c0b
commit size
ae668..
tree
parent
author
committermy commit message goes hereand it is really, really cool
c4ec5
a149eScott
Scott
77d3001a1de6bf8f5e431972fe4d25b01e595c0b
commit size
ae668..
tree
parent
author
committermy commit message goes hereand it is really, really cool
c4ec5
a149eScott
Scott
tree c4ec543b0322744e55c5efc9b6c4e449d398dbffparent a149e2160b3f7573768cdc2fce24d0881f3577e1author Scott Chacon <schacon@gmail.com> 1223402504 -0700committer Scott Chacon <schacon@gmail.com> 1223402504 -0700
descriptive commit message
77d3001a1de6bf8f5e431972fe4d25b01e595c0b
commit size
ae668..
tree
parent
author
committermy commit message goes hereand it is really, really cool
c4ec5
a149eScott
Scott
77d3001a1de6bf8f5e431972fe4d25b01e595c0b
commit size
ae668..
tree
parent
author
committermy commit message goes hereand it is really, really cool
c4ec5
a149eScott
Scott
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
commit size
ae668..
tree
parent
author
committermy commit message goes hereand it is really, really cool
c4ec5
a149eScott
Scott
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
commit size
tree
parent
author
committerthis is the previous commitand I am very proud of it
2de54
38defScott
Scott
commit size
ae668..
tree
parent
author
committermy commit message goes hereand it is really, really cool
c4ec5
a149eScott
Scott
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
commit size
tree
parent
author
committerthis is the previous commitand I am very proud of it
2de54
38defScott
Scott
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
commit size
ae668..
tree
parent
author
committermy commit message goes hereand it is really, really cool
c4ec5
a149eScott
Scott
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
commit size
tree
parent
author
committerthis is the previous commitand I am very proud of it
2de54
38defScott
Scott
commit size
tree
parent
author
committerthis is the commit before thatand I'm not sure why
2fe65
90ecdScott
Scott
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
commit size
tree
parent
author
committerthis is the commit before thatand I'm not sure why
2fe65
90ecdScott
Scott
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
commit size
ae668..
tree
parent
author
committermy commit message goes hereand it is really, really cool
c4ec5
a149eScott
Scott
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
commit size
tree
parent
author
committerthis is the previous commitand I am very proud of it
2de54
38defScott
Scott
commit size
tree
parent
author
committerthis is the commit before thatand I'm not sure why
2fe65
90ecdScott
Scott
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
commit size
tree
parent
author
committerthis is the commit before thatand I'm not sure why
2fe65
90ecdScott
Scott
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
48e 77da1438d
c4e
3d5
1d3
03e
f46
23f
30e
67e
32a
5b1
commit size
ae668..
tree
parent
author
committermy commit message goes hereand it is really, really cool
c4ec5
a149eScott
Scott
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
commit size
tree
parent
author
committerthis is the previous commitand I am very proud of it
2de54
38defScott
Scott
commit size
tree
parent
author
committerthis is the commit before thatand I'm not sure why
2fe65
90ecdScott
Scott
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
commit size
tree
parent
author
committerthis is the commit before thatand I'm not sure why
2fe65
90ecdScott
Scott
app.yaml
index.yaml
main.py
./ c4e
03e
1d3
3d5
48e
77d
a14
38d
c4e
3d51d3
03e
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Repository
3d4
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ffe
38d
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a14
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de3
c4ec4e
77d
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Repository
3d4
03e
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5b1
1d3
c36
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23f
6fe
30e
67e
32a
ffe
38d
5b1
1d3
254
a14
d23
2d3
48e
735
de3
c4ec4e
77d
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git checkout ae635
Repository
3d4
03e
ae6
5b1
1d3
c36
f46
23f
6fe
30e
67e
32a
ffe
38d
5b1
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254
a14
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c4ec4e
77d
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git checkout ae635
Working DirectoryIndex
Rakefile
README
simplegit.rb
./
lib/
./Rakefile
./README
./lib/simplegit.rb
./
./lib/ c36
3d4
03e
5b1
1d3
Repository
3d4
03e
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5b1
1d3
c36
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23f
6fe
30e
67e
32a
ffe
38d
5b1
1d3
254
a14
d23
2d3
48e
735
de3
c4ec4e
77d
3d5
Repository
3d4
03e
ae6
5b1
1d3
c36
f46
23f
6fe
30e
67e
32a
ffe
38d
5b1
1d3
254
a14
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2d3
48e
735
de3
c4ec4e
77d
3d5
Working DirectoryIndex
Rakefile
README
simplegit.rb
./
lib/
./Rakefile
./README
./lib/simplegit.rb
./
./lib/ c36
3d4
03e
5b1
1d3
Repository
3d4
03e
ae6
5b1
1d3
c36
f46
23f
6fe
30e
67e
32a
ffe
38d
5b1
1d3
254
a14
d23
2d3
48e
735
de3
c4ec4e
77d
3d5
Working DirectoryIndex
Rakefile
README
simplegit.rb
./
lib/
./Rakefile
./README
./lib/simplegit.rb
./
./lib/ c36
3d4
03e
5b1
1d3
Repository
3d4
03e
ae6
5b1
1d3
c36
f46
23f
6fe
30e
67e
32a
ffe
38d
5b1
1d3
254
a14
d23
2d3
48e
735
de3
c4ec4e
77d
3d5
Working DirectoryIndex
Rakefile
README
simplegit.rb
./
lib/
./Rakefile
./README
./lib/simplegit.rb
./
./lib/ c36
3d4
03e
5b1
1d3
Repository
3d4
03e
ae6
5b1
1d3
c36
f46
23f
6fe
30e
67e
32a
ffe
38d
5b1
1d3
254
a14
d23
2d3
48e
735
de3
c4ec4e
77d
3d5
Working DirectoryIndex
Rakefile
README
simplegit.rb
./
lib/
./Rakefile
./README
./lib/simplegit.rb
./
./lib/ c36
3d4
03e
5b1
1d3
git add
Repository
3d4
03e
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1d3
c36
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67e
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ffe
38d
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254
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2d3
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735
de3
c4ec4e
77d
3d5
Working DirectoryIndex
Rakefile
README
simplegit.rb
./
lib/
./Rakefile
./README
./lib/simplegit.rb
./
./lib/ c36
3d4
03e
5b1
1d3
git add
34f
Repository
3d4
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5b1
1d3
c36
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23f
6fe
30e
67e
32a
ffe
38d
5b1
1d3
254
a14
d23
2d3
48e
735
de3
c4ec4e
77d
3d5
Working DirectoryIndex
Rakefile
README
simplegit.rb
./
lib/
./Rakefile
./README
./lib/simplegit.rb
./
./lib/ c36
3d4
03e
5b1
1d3
git commit
34f
a083da34f
ae9
Repository
3d4
03e
ae6
5b1
1d3
c36
f46
23f
6fe
30e
67e
32a
ffe
38d
5b1
1d3
254
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d23
2d3
48e
735
de3
c4ec4e
77d
3d5
Working DirectoryIndex
Rakefile
README
simplegit.rb
./
lib/
./Rakefile
./README
./lib/simplegit.rb
./
./lib/ c36
3d4
03e
5b1
1d334f
a083da34f
ae9
Repository
3d4
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5b1
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23f
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67e
32a
ffe
38d
5b1
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254
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48e
735
de3
c4ec4e
77d
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Working DirectoryIndex
Rakefile
README
simplegit.rb
./
lib/
./Rakefile
./README
./lib/simplegit.rb
./
./lib/ c36
3d4
03e
5b1
1d334f
a083da34f
ae9
object model
blob
commit
tree
C1}
object model
blob
commit
tree
C1}directory list
file contents
pointer to a snapshot
object model
blob
commit
tree
C1}directory list
file contents
pointer to a snapshot
Branching and Merging
branches
brancheslightweight, movablepointers to a commit
C1
branch
branching
git branch
git checkout
C1
master
C0
C2 C3
experiment
HEAD
default
C1
master
C0
C2 C3
experimentC1
master
C0
C2 C3
C4
experiment
C5
T1
git branch experiment
HEAD
default
C1
master
C0
C2 C3
experimentC1
master
C0
C2 C3
C4
experiment
C5
T1
git branch experiment
HEAD
default
C1
master
C0
C2 C3
experimentC1
master
C0
C2 C3
C4
experiment
C5
T1
HEAD
$ git branch* default experiment
default
C1
master
C0
C2 C3
experimentC1
master
C0
C2 C3
C4
experiment
C5
T1
HEAD
$ git branch* default experiment
default
C1
master
C0
C2 C3
experimentC1
master
C0
C2 C3
C4
experiment
C5
T1
git checkout experiment
HEAD
default
C1
master
C0
C2 C3
experiment
C1
master
C0
C2 C3
C4
experiment
C5
T1
git commit
HEAD
default
C1
master
C0
C2 C3
experiment
C1
master
C0
C2 C3
C4
experiment
C5
T1
git commit
HEAD
default
C1
master
C0
C2 C3
experiment
C1
master
C0
C2 C3
C4
experiment
C5
T1
git commit
HEAD
default
C1
master
C0
C2 C3
experiment
C1
master
C0
C2 C3
C4
experiment
C5
T1
git commitgit commit
HEAD
default
C1
master
C0
C2 C3
experiment
C1
master
C0
C2 C3
C4
experiment
C5
T1
HEAD
git checkout defaultdefault
C1
master
C0
C2 C3
experiment
C1
master
C0
C2 C3
C4
experiment
C5
T1
HEAD
git checkout defaultdefault
C1
master
C0
C2 C3
C4
experiment
C5
T1
C1
master
C0
C2 C3
C4
experiment
C5
T1git commit
HEAD
default
C1
master
C0
C2 C3
C4
experiment
C5
T1
C1
master
C0
C2 C3
C4
experiment
C5
T1git commit
HEAD
default
C1
master
C0
C2 C3
C4
experiment
C5
T1
C1
master
C0
C2 C3
C4
experiment
C5
T1git commit
HEAD
default
C1
master
C0
C2 C3
C4
experiment
C5
T1
git checkout experimentgit commit
HEAD
default
merging
git merge
C1
master
C0
C2 C3
C4
experiment
C5
T1
HEAD
default
C1
master
C0
C2 C3
C4
experiment
C5
T1
HEAD
git checkout default
default
C1C0
C2 C3
C4
experiment
C5
C6
masterT1
git checkout defaultgit merge experiment
HEAD
default
C1C0
C2 C3
C4
experiment
C5
C6
masterT1
git checkout defaultgit merge experiment
HEAD
default
C1C0
C2 C3
C4
C5
C6
C7
C8
default
experiment
HEADgit checkout experiment
C1C0
C2 C3
C4
C5
C6
C7
C8
default
experiment
HEADgit commit
C1C0
C2 C3
C4
C5
C6
C7
C8
default
experiment
HEAD
git checkout default
C1C0
C2 C3
C4
C5
C6
C7
C8
default
experiment
HEAD
git merge experiment
Hot 3 Way Merge
Action
C1
master
C0
C2 C3
C4
experiment
C5
C1
master
C0
C2 C3
C4
experiment
C5
C1C0
C2 C3
C4
C5
C6
C7
C1C0
C2 C3
C4
C5
C6
C7
C1C0
C2 C3
C4
C5
C6
C7
Remotes
Distributed Workflow
public repo
local repo
local repo
public repo
internet
A B C
public repo
local repo
local repo
public repo
git push(ssh)
internet
A B C
A B C
public repo
local repo
local repo
public repo
git push(ssh)
git fetch(git)
internet
A B C
A B C
A B C
public repo
local repo
local repo
public repo
git push(ssh)
git fetch(git)
internet
A B C
A B C
A B C
D E F git commit
public repo
local repo
local repo
public repo
git push(ssh)
git fetch(git)
git push(ssh)
internet
A B C
A B C
A B C
D E F
A B C
D E F
public repo
local repo
local repo
public repo
git fetch(http)
git push(ssh)
git fetch(git)
git push(ssh)
internet
A B C
A B C
A B C
D E F
A B C
D E F
D E F
public repo
local repo
local repo
public repo
git fetch(http)
git push(ssh)
git fetch(git)
git push(ssh)
internet
A B C
A B C
A B C
D E F
A B C
D E F
D E FD E F
Multiple Remotes
developernick
developerjessica
my repo5ec
e4a4a7ce0 master
developernick
developerjessica
my repo5ec
e4a4a7ce0 master
commit
developernick
developerjessica
my repo5ec
e4a4a7ce0 master
tree
developernick
developerjessica
my repo5ec
e4a4a7ce0 master
blobs
schacon/project
developernick
developerjessica
"public"
my repo5ec
e4a4a7ce0 master
git push public
public/master
5ece4a
4a7ce0
schacon/project
developerjessica
"public"
my repo5ec
e4a4a7ce0 master
git clone (url)
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nick
schacon/project
developerjessica
"public"
my repo5ec
e4a4a7ce0 master
git commit
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f git clone (url)
5ece4a
4a7ce0developer
jessica
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09git commit
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09git push
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git remote add nick git://github.com/nickh/project.git
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick"
git remote add nick git://github.com/nickh/project.git
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git remote add nick git://github.com/nickh/project.git
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick"“nick”
git remote add nick git://github.com/nickh/project.git
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git remote add jess git://github.com/jessica/project.git
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
git remote add jess git://github.com/jessica/project.git
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git remote add jess git://github.com/jessica/project.git
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
git remote add jess git://github.com/jessica/project.git
“jess”
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git remote add jess git://github.com/jessica/project.git
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git fetch nick
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
c12ec524f nick/master
git fetch nick
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git remote add jess git://github.com/jessica/project.git
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git fetch nick
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
c12ec524f nick/master
git fetch nick
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git fetch nick
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
c12ec524f nick/master
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git remote add jess git://github.com/jessica/project.git
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
git fetch jess
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git fetch jess
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
ec524f nick/master
2fbdf74eaa09
jess/masterc12
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git fetch nick
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
c12ec524f nick/master
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git remote add jess git://github.com/jessica/project.git
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
git fetch jess
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git fetch jess
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
ec524f nick/master
2fbdf74eaa09
jess/masterc12
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git fetch nick
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
c12ec524f nick/master
schacon/project
"public"
my repo5ec
e4a4a7ce0 master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git fetch jess
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
ec524f nick/master
2fbdf74eaa09
jess/masterc12
schacon/project
"public"
my repo5ec
e4a4a7ce0
master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
ec524f nick/master
2fbdf74eaa09
jess/masterc12
b3bc63
git merge nick jess
schacon/project
"public"
my repo5ec
e4a4a7ce0
master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
git push public
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
ec524f nick/master
2fbdf74eaa09
jess/masterc12
b3bc63
e4aec524f
2fbdf74eaa09
c12
b3bc63
schacon/project
"public"
my repo5ec
e4a4a7ce0
master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
ec524f nick/master
2fbdf74eaa09
jess/masterc12
b3bc63
e4aec524f
2fbdf74eaa09
c12
b3bc63
schacon/project
"public"
my repo5ec
e4a4a7ce0
master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
ec524f nick/master
2fbdf74eaa09
jess/masterc12
b3bc63
e4aec524f
2fbdf74eaa09
c12
b3bc63
schacon/project
"public"
my repo5ec
e4a4a7ce0
master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
ec524f nick/master
2fbdf74eaa09
jess/masterc12
b3bc63
e4aec524f
2fbdf74eaa09
c12
b3bc63
schacon/project
"public"
my repo5ec
e4a4a7ce0
master
public/master
5ece4a
4a7ce0
5ece4a
4a7ce0developer
nickc12ec524f
5ece4a
4a7ce0developer
jessica2fbdf74ea
a09
5ece4a
4a7ce0nickh/project
c12ec524f
5ece4a
4a7ce0jessica/project
2fbdf74eaa09"nick" "jess"
ec524f nick/master
2fbdf74eaa09
jess/masterc12
b3bc63
e4aec524f
2fbdf74eaa09
c12
b3bc63
Remotes Are Branches
C0
default
scott jessica
C1
C0
default
scott jessica
C1
C0
scott/default default
C1
C0
default
scott jessica
C1
C0
scott/default default
C1
git clone
C0
default
scott jessica
C1
C0
scott/default default
C1
C0
default
scott jessica
C1
C0
scott/default default
C1
C0
default
scott jessica
C1 C1
C0
scott/default
default
C2
C3
C4
C0
default
scott jessica
C1 C1
C0
scott/default
default
C2
C3
C4
C0
default
scott jessica
C1 C1
C0
scott/default
default
C2
C3
C4
C0
default
scott
C1
C5
C6
C7
jessica
C1
C0
scott/default
default
C2
C3
C4
C0
default
scott
C1
C5
C6
C7
jessica
C1
C0
scott/default
default
C2
C3
C4
C0
default
scott jessica
C1
C0
scott/default default
C2
C3
C4
C1
C5
C6
C7
C5
C6
C7
C0
default
scott jessica
C1
C0
scott/default default
C2
C3
C4
C1
C5
C6
C7
C5
C6
C7
experiment
C8
C9
C0
default
scott jessica
C1
C0
scott/default default
C2
C3
C4
C1
C5
C6
C7
C5
C6
C7
experiment
C8
C9
C0
default
scott jessica
C1
C0
scott/default default
C2
C3
C4
C1
C5
C6
C7
C5
C6
C7
experiment
C8
C9
git merge experiment
git merge scott/default
C0
default
scott jessica
C1
C0
scott/default default
C2
C3
C4
C1
C5
C6
C7
C5
C6
C7
experiment
C8
C9
C0
default
scott jessica
C1
C0
scott/default default
C2
C3
C4
C1
C5
C6
C7
C5
C6
C7
experiment
C8
C9
a “remote” branch is simply alocal pointer to the last known
state of another repository
Why is this cool?
non-linear development
• clone the code that is in production
• clone the code that is in production
• create a branch for issue #53 (iss53)
• clone the code that is in production
• create a branch for issue #53 (iss53)
• work for 10 minutes
• clone the code that is in production
• create a branch for issue #53 (iss53)
• work for 10 minutes
• someone asks for a hotfix for issue #102
• clone the code that is in production
• create a branch for issue #53 (iss53)
• work for 10 minutes
• someone asks for a hotfix for issue #102
• checkout ‘production’
• clone the code that is in production
• create a branch for issue #53 (iss53)
• work for 10 minutes
• someone asks for a hotfix for issue #102
• checkout ‘production’
• create a branch (iss102)
• clone the code that is in production
• create a branch for issue #53 (iss53)
• work for 10 minutes
• someone asks for a hotfix for issue #102
• checkout ‘production’
• create a branch (iss102)
• fix the issue
• clone the code that is in production
• create a branch for issue #53 (iss53)
• work for 10 minutes
• someone asks for a hotfix for issue #102
• checkout ‘production’
• create a branch (iss102)
• fix the issue
• checkout ‘production’, merge ‘iss102’
• clone the code that is in production
• create a branch for issue #53 (iss53)
• work for 10 minutes
• someone asks for a hotfix for issue #102
• checkout ‘production’
• create a branch (iss102)
• fix the issue
• checkout ‘production’, merge ‘iss102’
• push ‘production’
• clone the code that is in production
• create a branch for issue #53 (iss53)
• work for 10 minutes
• someone asks for a hotfix for issue #102
• checkout ‘production’
• create a branch (iss102)
• fix the issue
• checkout ‘production’, merge ‘iss102’
• push ‘production’
• etc
C0
production
C1origin/master
git clone
C0
production
C1origin/master iss53
git checkout -b iss53
C0
production
C1origin/master
iss53
C2
git commit
C0
production
C1origin/master
iss53
C2
C3
git commit
C0
production
C1origin/master
iss53
C2
C3
iss102
git checkout productiongit checkout -b iss102
C0
production
C1origin/master
iss53
C2
C3 iss102
C4
git commit
C0
production
C1origin/master
iss53
C2
C3
iss102 C4
git checkout productiongit merge iss102
C0
production
C1
origin/master
iss53
C2
C3
C4
git push
C0
production
C1
origin/master
iss53
C2
C3
C4
C5
git checkout iss53git commit
C0
production
C1
origin/master
iss53
C2
C3
C4
C5
iss53v2
git checkout productiongit checkout -b iss53v2
C0
production
C1
origin/master
iss53
C2
C3
C4
C5
iss53v2
C6
C7
git commitgit commit
try out an idea
isolate work units
long running topics
pain freecontext switching
Changes
deltastorage
!
!
! !
! ! !
snapshotstorage
deltastorage
!
!
! !
! ! !
snapshotstorage
deltastorage
!
!
! !
! ! !
snapshotstorage
git diff
What is not yet staged?
git diff
git diff
working directory
repository
index
What is staged?
git diff --cached
git diff --cached
working directory
repository
index
Unified Diff
git diff > change.patch
git diff > change.patch
patch -p1 < change.patch
git diff > change.patch
patch -p1 < change.patch
git apply change.patchor
History
git log
What am I about to submit?
git log [branch]..
git log origin/master..
git log origin/master..
what you’ve committed that isn’t pushed yet
Git Help
git [command] --help
git help [command]
git-scm.com
git-scm.com
Basic Commands Review
12
git init
12
git init
git clone
12
git init
git clone
git add 12
git init
git clone
git add
git commit 12
git init
git clone
git add
git commit
git branch12
git init
git clone
git add
git commit
git branch
git checkout
12
git init
git clone
git add
git commit
git branch
git checkout
git merge
12
git init
git clone
git add
git commit
git branch
git checkout
git merge
git remote
12
git init
git clone
git add
git commit
git branch
git checkout
git merge
git remote
git fetch 12
git init
git clone
git add
git commit
git branch
git checkout
git merge
git remote
git fetch
git push 12
git init
git clone
git add
git commit
git branch
git checkout
git merge
git remote
git fetch
git push
git diff12
git init
git clone
git add
git commit
git branch
git checkout
git merge
git remote
git fetch
git push
git diff
git log
12
that’s it!
Resources
Resources
git-scm.com
Resources
git-scm.com
gitcasts.com
Resources
git-scm.com
gitcasts.com
learn.github.com
Resources
git-scm.com
gitcasts.com
learn.github.com
#git / #github on IRC
Resources
git-scm.com
gitcasts.com
learn.github.com
#git / #github on IRC
peepcode - git book and screencast
top related