VCSThree letters that can change your life
WHY DO I TALK ABOUT THIS?
MEET MAIN CHARACTERSThis is a story with a few characters. Let meet
them!
Cthulhu The Cute
Twilight The Gentoo Pony
Shadow The Gamer
ONCE UPON A TIME IN R'LYEHPROGRAMMING UNIVERSITY...
Shadow played games the whole semester. Atthe end of the semester he had to do a lot of
tasks but he did not know how.
So he asked Twilight for help
And then the terrible thing happened
CUTE CTHULHU'S WISE WORDS:
SO WHY DO I TALK ABOUTTHIS?
BECAUSE...Sharing source code as attachments in social
networks is like using stone instrumentsnowadays
BECAUSE...Version control systems simplify software
development
Especially when several people work on thesame code together
BECAUSE...It is vital to programmer to know how to use
version control systems
BORING PART
WHAT IS VERSION CONTROLSYSTEM?
“ Version control is a system thatrecords changes to a file or set of
files over time so that you canrecall specific versions later.”
GOALS OF VCSAllow developers to work simultaneously.
Do not overwrite each other’s changes.
Maintain history of every version ofeverything.
VCS CLASSIFICATIONCentralized version control systems (CVCS)
Distributed version control systems (DVCS)
CENTRALIZED VCSThere is a single “central” copy of your projectsomewhere, and programmers commit their
changes to this central copy.
CVCS WORKFLOW1. Pull down any changes other people have
made from the central server.
2. Make your changes, and make sure theywork properly.
3. Commit your changes to the central server,so other programmers can see them.
DISTRIBUTED VCSDo not necessarily rely on a central server to
store all the versions of a project’s files.
Every developer clones a copy of a repositoryand has the full history of the project on their
own hard drive
ADVANTAGES OVER CVCSFaster
Nobody sees unfinished work
Less dependent on Internet
THE MOST POPULAR VCSSubversion
Git
Mercurial
INTERESTING PART
HELLO, GIT!
INITIALIZE AN EMPTYREPOSITORY
git init
ADD FILESgit add
COMMIT CHANGESgit commit
WHAT IS YOUR STATUS?git status
LOCAL HISTORYgit log
BRANCHESgit branch
SWITCH WORKING TREEgit checkout
GET IT TOGETHERgit merge
PUT ONE ONTO ANOTHERgit rebase
WORKING IN TEAM
REMOTESgit remote add <name> <address>
SEND COMMITS TO REMOTEgit push <remote> <branch>
UPDATE FROM REMOTEgit fetch <remote>git pull <remote>
WHAT TO READ NEXT?
GITGit documentation
Atlassian tutorials about git
Git in 15 minutes
Git tree planting
What to do if you messed your Git repository
MERCURIALMercurial official website
Great Mercurial tutorial
Comparison of Git and Mercurial
Working qwith bookmarks
THE ENDANY QUESTIONS?
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