1

What is version control. Goals of version control system. centralized version control system basics. Subversion of basics. distributed version control system basics. Advantages. Weaknesses

2

A version control system is a piece of software that helps the developers on a software team together and also achieve a complete history of their work.

3

We want people to be able to work simultaneously, not serially.

When people are working at the same time, we want their changes to not conflict with each other.

We want to archive every version of every thing that has ever exited.

4

Create◦ Create a new, empty repository.

Checkout◦ Create a working copy.

Commit◦ Apply the modifications in the working copy to the

repository as a new changeset.

5

Update◦ update the working copy with respect to the

repository

Add◦ Add a file or directory

6

Edit◦ Modify a file.

Delete◦ Delete a file or directory.

7

Rename◦ Rename a file or directory.

Move◦ Move a file or directory.

8

Status◦ List the modifications that have been made to

the working copy.

Diff◦ List the modifications that have been made to the

working copy.

9

Revert◦ Undo modifications that have been made to the

working copy.

Log ◦ Show the history of changes to the repository.

10

Tag◦ Associate a meaningful name with a specific

version in the repository.

Branch◦ Create another line of development.

11

Merge◦ Apply changes from one branch to another.

Resolve◦ Handle conflicts resulting from a merge.

12

Lock◦ Prevent other people from modifying a file.

13

Operation Subversion Command

Create svnadmin create

Checkout svn checkout

Commit svn commit

Update svn update

Add svn add

Edit a

Delete svn delete

14

Rename svn move

Move svn move

Status svn status

Diff svn diff

Revert svn revert

Log svn log

Tag svn copyb

15

Branch svn copyc Merge svn merge Resolve svn resolve Lock svn lock

A Automatic: Subversion will notice that the file has changed. B Built on Subversion’s “cheap copy” mechanism. Appears as a directory in the tree. Equivalent to a branch that never gets modified. C Built on Subversion’s “cheap copy” mechanism. Appears as a directory in the tree.

16

Clone ◦ Create a new repository instance that is a copy of

another. Push

◦ Copy changesets from a local repository instance to a remote one.

Pull ◦ Copy changesets from a remote repository

instance to a local one.

17

A variety of version numbering schemes have been created to keep track of different versions of a piece of software.

Some schemes use a zero in the first sequence to designate alpha or beta status for releases that are not stable enough for general or practical deployment and are intended for testing or internal use only.

18

It can be used in the third position:

◦ 0 for alpha (status)◦ 1 for beta (status)◦ 2 for release candidate◦ 3 for (final) release

19

Private Workspace Fast Offline Flexible Workflows Easier Merging

20

Locks Very Large Repositories Integration

21

http://www.ericsink.com/vcbe

22

23