Updating subversion

------------------------------------------------------------------------ r98 | sally | 2002-02-22 -0600 (Fri, ) | 2 lines Changed paths: A /calc/trunk/integer.c * integer.c: adding this file to the project.

------------------------------------------------------------------------ $ pwd /home/sally/calc $ svn log -v integer.c ------------------------------------------------------------------------ r344 | sally | 2002-11-07 -0600 (Thu, ) | 2 lines Changed paths: M /calc/trunk/integer.c * integer.c: fix a bunch of spelling errors.

For each updated item, it prints a line that starts with a character reporting the action taken.

These characters have the following meaning: A character in the first column signifies an update to the actual file, whereas updates to the file's properties are shown in the second column. As with most subcommands, you can limit the scope of the update operation to a particular tree depth using the , the update operation will omit or reenlist individual working copy members by modifying their recorded ambient depth to the depth you specify (fetching information from the repository as necessary).

In fact, this feature is the basis of how commits work in Subversion: each revision is a method in Subversion's design documents.) Of course, these internal mechanics of copying and sharing data are hidden from the user, who simply sees copies of trees.

The main point here is that copies are cheap, both in time and in space.

As further changes are made to files and directories beneath the copied directory, Subversion continues to employ this hard link concept where it can.It duplicates data only when it is necessary to disambiguate different versions of objects.This is why you'll often hear Subversion users talk about It doesn't matter how large the directory is—it takes a very tiny, constant amount of time and space to make a copy of it.You may think of the directory differently, or treat it differently, but to Subversion it's just an ordinary directory that happens to carry some extra historical information.also removes any stale locks (see the section called “Sometimes You Just Need to Clean Up”) found in the working copy.

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