By default, CVS will assign numeric revisions by
leaving the first number the same and incrementing the
second number. For example, 1.1, 1.2,
1.3, etc.
When adding a new file, the second number will always
be one and the first number will equal the highest
first number of any file in that directory. For
example, the current directory contains files whose
highest numbered revisions are 1.7, 3.1,
and 4.12, then an added file will be given the
numeric revision 4.1.
Normally there is no reason to care
about the revision numbers--it is easier to treat them
as internal numbers that CVS maintains, and tags
provide a better way to distinguish between things like
release 1 versus release 2 of your product
(see section Tags--Symbolic revisions). However, if you want to set the
numeric revisions, the `-r' option to cvs
commit can do that. The `-r' option implies the
`-f' option, in the sense that it causes the
files to be committed even if they are not modified.
For example, to bring all your files up to revision 3.0 (including those that haven't changed), you might invoke:
$ cvs commit -r 3.0
Note that the number you specify with `-r' must be larger than any existing revision number. That is, if revision 3.0 exists, you cannot `cvs commit -r 1.3'. If you want to maintain several releases in parallel, you need to use a branch (see section Branching and merging).
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