[High speed].

" Please make sure your seat backs are in their full, upright position and that your tray tables are stored. Flight attendants, prepare for take-off…. " What follows is a quick tutorial that walks you through some basic Subversion configuration and operation. When you finish it, you should have a general understanding of Subversion's typical usage. The examples used in this appendix assume that you have svn, the Subversion command-line client, and svnadmin, the administrative tool, ready to go on a Unix-like operating system. (This tutorial also works at the Windows command-line prompt, assuming you make some obvious tweaks.) We also assume you are using Subversion 1.2 or later (run svn-version to check). Subversion stores all versioned data in a central repository. To begin, create a new repository: $ cd /var/svn $ svnadmin create repos $ ls repos conf/ dav/ db/ format hooks/ locks/ README.txt $ This command creates a Subversion repository in the directory /var/svn/repos, creating the repos directory itself if it doesn't already exist. This directory contains (among other things) a collection of database files. You won't see your versioned files if you peek inside. For more information about repository creation and maintenance, see Chapter 5, Repository Administration. Subversion has no concept of a " project. " The repository is just a virtual versioned filesystem, a large tree that can hold anything you wish. Some administrators prefer to store only one project in a repository, and others prefer to store multiple projects in a repository by placing them into separate directories. We discuss the merits of each approach in the section called " Planning Your Repository Organization ". Either way, the repository manages only files and directories, so it's up to humans to interpret particular directories as " projects. " So while you might see references to projects throughout this book, keep in mind that we're only ever talking about some directory (or collection of directories) in the repository. In this example, we assume you already have some sort of project (a collection of files and directories) that you wish to import into your newly created Subversion repository. Begin by organizing your data into a single directory called myproject (or whatever you wish). For reasons explained in Chapter 4, Branching and Merging, your project's tree structure should contain three top-level directories named branches, tags, and trunk. The trunk directory should contain all of your data, and the branches …