Learn what is Version control By cblsolutions.com

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Version Control And TortoiseSVN
Nithin Narendra
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Agenda

• What is Version Controlling
• What is a Version Control
• Why we use it
• How we use it
• Tortoise SVN functionality

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What Is Version Controlling

• keeping track of a software system consisting of
  many versions and configurations well organized

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What Is A Version Control

• A tool for managing changes to a set of files
• Each set of changes is saved as a new revision of
  the file
• Allows users to recover old revisions reliably
• Helps manage conflicting changes made by
  different users
• Backup system

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Why We Use

• It works like Save As function
• Enables parallel development
• Brings collaboration between developers
• Maintains history of the whole project
• Enables reversibility

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How We Use?

• Every time we make significant changes to the
  existing files, we save the revision
• Each revision is associated to a description and
  a date
• It is a good practice to update before we commit
  to avoid possible conflicts
• If a conflict arise, we can compare the files to
  resolve it

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Tortoise SVN

• Tortoise SVN is an easy to use version control
  software for Windows
• Based on Apache Subversion
• Free of cost
• Can be used with any development tool
• All the features are directly accessed from the
  windows explorer, it acts like a plug-in

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The Repository

• Also referred to as the a depot or root
• The repository holds information including dates,
  labels, branches, versions, etc.,
• The repository saves the changes between versions
  every time but not the whole project there by
  saves space

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Version Management In TortoiseSVN

• All code resides in trunk
• Code versions are detached in branches
• Snapshots for releases are tagged

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Trunk?

• Trunk is the location where the stable code
  resides
• It always have the latest version
• We never directly make/commit changes to the
  trunk

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Branch

• In SVN terms, a branch is just a copy of a
  current files
• Branch is copy of trunk on which the changes are
  to be made
• After making changes to the branch it is updated
  back to the trunk

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Tags

• Tags are snapshots/pictures
• Usually made on version branches
• Can also be made on trunk
• Are used to keep track whats happened b/w change
  log

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How do we use subversion

• We can easily download and install the Tortoise
  SVN from http//tortoisesvn.net/
• Tortoise SVN provides all the features right in
  the windows explorer, you need not open any
  application to use it
• After installation when ever you right click, the
  options of Tortoise SVN are readily available in
  the panel
• To access a particular repository, Admin team
  will be responsible in granting access to certain
  developer/team

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Cont..

• Create an empty folder in certain location where
  you would like to download project/files from the
  repository
• Right click on the newly created folder, in the
  menu we see the SVN Checkout option

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Cont..

• Clicking on SVN Checkout option as shown above
  pops out a configuration window
• We provide the URL of the Repository where the
  original copy of the project is saved and click
  ok

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Cont..

• When we check out, an authentication window pops
  up asking username and password(if any) for
  accessing the repository
• Provide them and check the save authentication to
  avoid repeating this process

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Cont..

• Files get synced to the folder from the
  repository
• This will be the folder on which you work further
• Revision 30 in the image indicates the current
  project had 29 versions previously

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Cont..

• Folder with green check mark indicates the folder
  is in proper sync with the repository and is up
  to date

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Cont..

• When we create a new file in the project, it
  needs to be added to the repository
• We can do this by selecting the add option as
  shown aside

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Cont..

• Any kind of change occured to the file/folder can
  be observed with a red warning kind of sign on it
• Newly added files are represented with a blue
  on it before it is checked in

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Cont..

• After making changes to the project it needs to
  be committed to reflect the changes in repository
• Right click on the folder and select SVN Commit

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Cont..

• Select the files that need to be updated in the
  changes made column of the window
• Message window can take the comments related to
  the update made

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Cont..

• Unless there occurs any errors, a window pops up
  as shown reflecting the changes applied to the
  repository

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Cont..

• It is a good practice to update every time before
  you start working on a copy/commit your changes
• This avoids most of the conflicts

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Summary

• Manageable file change history
• Better collaboration b/w developers
• Clearer release management
• More then one version of same code base
• Easier to rollback in case of emergency