The overall structure of the repository is a directory tree corresponding to the directories in the working directory. For example, supposing the repository is in
/usr/local/cvsroot
here is a possible directory tree (showing only the directories):
/usr
|
+--local
| |
| +--cvsroot
| | |
| | +--CVSROOT
| (administrative files)
|
+--gnu
| |
| +--diff
| | (source code to GNU diff)
| |
| +--rcs
| | (source code to RCS)
| |
| +--cvs
| (source code to CVS)
|
+--yoyodyne
|
+--tc
| |
| +--man
| |
| +--testing
|
+--(other Yoyodyne software)
With the directories are history files for each file under version control. The name of the history file is the name of the corresponding file with `,v' appended to the end. Here is what the repository for the `yoyodyne/tc' directory might look like:
$CVSROOT
|
+--yoyodyne
| |
| +--tc
| | |
+--Makefile,v
+--backend.c,v
+--driver.c,v
+--frontend.c,v
+--parser.c,v
+--man
| |
| +--tc.1,v
|
+--testing
|
+--testpgm.t,v
+--test2.t,v
The history files contain, among other things, enough
information to recreate any revision of the file, a log
of all commit messages and the user-name of the person
who committed the revision. The history files are
known as RCS files, because the first program to
store files in that format was a version control system
known as RCS. For a full
description of the file format, see the man page
rcsfile(5), distributed with RCS, or the
file `doc/RCSFILES' in the CVS source
distribution. This
file format has become very common--many systems other
than CVS or RCS can at least import history
files in this format.
The RCS files used in CVS differ in a few ways from the standard format. The biggest difference is magic branches; for more information see section Magic branch numbers. Also in CVS the valid tag names are a subset of what RCS accepts; for CVS's rules see section Tags--Symbolic revisions.
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