|Version Management with CVS - the CVS manual|
by Per Cederqvist et al.
Paperback (6"x9"), 216 pages, 8 figures
RRP £19.95 ($29.95)
5.8 Merging differences between any two revisions
With two ‘-j revision’ flags, the
checkout) command can merge the differences
between any two revisions into your working file.
$ cvs update -j 1.5 -j 1.3 backend.c
will undo all changes made between revision 1.3 and 1.5. Note the order of the revisions!
If you try to use this option when operating on multiple files, remember that the numeric revisions will probably be very different between the various files. You almost always use symbolic tags rather than revision numbers when operating on multiple files.
Specifying two ‘-j’ options can also undo file removals or additions. For example, suppose you have a file named ‘file1’ which existed as revision 1.1, and you then removed it (thus adding a dead revision 1.2). Now suppose you want to add it again, with the same contents it had previously. Here is how to do it:
$ cvs update -j 1.2 -j 1.1 file1 U file1 $ cvs commit -m test Checking in file1; /usr/local/cvsroot/first-dir/file1,v <-- file1 new revision: 1.3; previous revision: 1.2 done $
|ISBN 0954161718||Version Management with CVS - the CVS manual||See the print edition|