Version Control with Subversion - Login

Basic Usagethe entire thing, but you'd be well served to take a look through the working copy for unversionedfiles. To find these files, run svn status and review any files that are prefixed witha ? to make certain that they're not of importance. After you're done reviewing, you cansafely delete your working copy.Recovering from an InterruptionWhen Subversion modifies your working copy (or any information within .svn), it tries todo so as safely as possible. Before changing the working copy, Subversion writes its intentionsto a logfile. Next, it executes the commands in the logfile to apply the requestedchange, holding a lock on the relevant part of the working copy while it works—to preventother Subversion clients from accessing the working copy mid-change. Finally, Subversionremoves the logfile. Architecturally, this is similar to a journaled filesystem. If a Subversionoperation is interrupted (e.g, if the process is killed or if the machine crashes), the logfilesremain on disk. By reexecuting the logfiles, Subversion can complete the previously startedoperation, and your working copy can get itself back into a consistent state.And this is exactly what svn cleanup does: it searches your working copy and runs anyleftover logs, removing working copy locks in the process. If Subversion ever tells you thatsome part of your working copy is “locked,” this is the command that you should run. Also,svn status will display an L next to locked items:$ svn statusL somedirM somedir/foo.c$ svn cleanup$ svn statusM somedir/foo.cDon't confuse these working copy locks with the ordinary locks that Subversion users createwhen using the lock-modify-unlock model of concurrent version control; see the sidebarThe Three Meanings of “Lock” for clarification.SummaryNow we've covered most of the Subversion client commands. Notable exceptions arethose dealing with branching and merging (see Chapter 4, Branching and Merging) andproperties (see the section called “Properties”). However, you may want to take a momentto skim through Chapter 9, Subversion Complete Reference to get an idea of all the differentcommands that Subversion has—and how you can use them to make your work easier.39