How to install subversion

When changes are complete, the new release is made from the branch and a corresponding tag is created. The following Project-A example outlines the general workflow for patch management of source code:. The current version developing under the trunk directory is version 2.

The three previous releases of Project-A are 1. The release build can then be made from the tag. For more information on directory structure conventions, see the section about the recommended repository layout in Version Control with Subversion at:. If you have existing projects that you want to manage in your repository, you can import them using the SVN client's import command:.

Make changes. Use the svn add , svn delete , svn copy , and svn move commands as needed to edit your files. Review changes through the svn status and svn diff commands. Fix mistakes. You can revert and abandon changes using the svn revert command. Resolve conflicts. When they are resolved, mark them using the svn resolve command.

Commit changes using the svn commit or svn ci command. Figure shows the complete life cycle of an SVN operation:. In a continuous integration development process, this workflow remains largely unchanged.

Committed change sets tend to be smaller and occur more frequently than in a noncontinuous integration process. You must commit the active trunk or branch code for the target release so that the continuous integration system can perform an integration build. Avoid creating a personal branch with the intention of merging back to the main-line code base in the future.

The personal branch and merge technique defers integration and runs counter to continuous integration precepts. When you are working with Subversion projects, you check out the files into your local file system.

Then, when you are ready to commit the files to the repository, you check the project in. To begin working on a Subversion-managed project, you must first check out the files into your local file system. The SVN client copies the project files to your system, including Subversion metadata in. In this case, a directory called test-project is created and the project contents are recursively copied into the directory from the server.

After the project is checked out once on your system, there is no need to perform subsequent checkouts on that source code. To stay synchronized with the Subversion repository content, you can run the svn update command on a checked out directory or even on individual files.

It is important to tag releases, as tags provide a simple mechanism for patching releases. When a bug is found in a release, you can branch from the tag for that release, implement the fix, and then create a patch for the release. In the preceding example, 3. A tag is important for future work that might be necessary for patch creation or bug-fix releases.

Another importance of a release tag is to facilitate investigation regarding issues in the associated release. If a patch or subsequent change of a tag is considered necessary, then you must create a branch. A branch is a copy of a location elsewhere in the repository and does not differ in composition from a tag.

After a copy of the tag is made under the branches directory, you can check out the code and modify it as necessary. When changes are complete, the new release is made from the branch and a corresponding tag is created. The current version developing under the trunk directory is version 2. The three previous releases of Project-A are 1. A problem is discovered in version 1. The release build can then be made from the tag. For more information on directory structure conventions, see the section about the recommended repository layout in Version Control with Subversion at the following URL:.

If you have existing projects that you want to manage in your repository, you can import them using the SVN client's import command:. Make changes. Use the svn add , svn delete , svn copy , and svn move commands as needed to edit your files.

Review changes through the svn status and svn diff commands. Fix mistakes. You can revert and abandon changes using the svn revert command. Resolve conflicts. When they are resolved, mark them using the svn resolve command. Commit changes using the svn commit or svn ci command.

In a continuous integration development process, this workflow remains largely unchanged. Committed change sets tend to be smaller and occur more frequently than in a noncontinuous integration process. You must commit the active trunk or branch code for the target release so that the continuous integration system can perform an integration build. Avoid creating a personal branch with the intention of merging back to the main-line code base in the future.

Moreover, Subversion repository can contain a number of unrelated projects and it is better to have a dedicated working copy for each of them, not a single working copy for all of the projects. You are not the only person working on the project, right? This means that your colleagues are also making modifications to the project's data. To stay up to date and to fetch the modifications committed by others, you should run the svn update command in your working copy.

As a result, your working copy will sync with the repository and download the changes made by your colleagues. It is a good practice to update your working copy before committing local modifications to the repository. Most of the time, you are going to perform modifications to the project's data by modifying the contents of the working copy.

As soon as you are satisfied with the modifications and you've reviewed them thoroughly, you are ready to commit them to the central repository. Modify the files as you usually do using your favorite text processor, graphics editor, audio editing software, IDE, etc. As soon as you save the changes to disk, Subversion will recognize them automatically.

In order to publish the changes you made in your working copy, you should run the svn commit command. Review your changes before committing them! Use the svn status and svn diff commands to review the changes. Note the -m --message option. You should always include a descriptive commit log message. It should help others including yourself understand the reason why you made this commit. It is a good idea to include a summary of your changes in the log message, too. You can perform any actions with your project's data within the working copy, but operations that involve copying, moving, renaming and deleting must be performed using the corresponding svn commands.

Subversion does not use heurisic-tracking for tree changes in a working copy. Subversion requires explicit tracking of tree changes. If you perform a tree changes such as move or copy with regular filesystem commands, Subversion will not know about this operation. To track tree changes Subversion should be made aware of them. Put new files or directories to the working copy and Subversion will see them as "unversioned".

It will not automatically start tracking the new files unless you run the svn add command:. Move and rename files and directories using the svn move or svn rename command:. Copy files and directories using the svn copy command:.