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History browsing

Once you have used CVS to store a version control history--what files have changed when, how, and by whom, there are a variety of mechanisms for looking through the history.

Log messages

Whenever you commit a file you specify a log message.

To look through the log messages which have been specified for every revision which has been committed, use the cvs log command (see section log--Print out log information for files).

The history database

You can use the history file (see section The history file) to log various CVS actions. To retrieve the information from the history file, use the cvs history command (see section history--Show status of files and users).

User-defined logging

You can customize CVS to log various kinds of actions, in whatever manner you choose. These mechanisms operate by executing a script at various times. The script might append a message to a file listing the information and the programmer who created it, or send mail to a group of developers, or, perhaps, post a message to a particular newsgroup. To log commits, use the `loginfo' file (see section Loginfo). To log commits, checkouts, exports, and tags, respectively, you can also use the `-i', `-o', `-e', and `-t' options in the modules file. For a more flexible way of giving notifications to various users, which requires less in the way of keeping centralized scripts up to date, use the cvs watch add command (see section Telling CVS to notify you); this command is useful even if you are not using cvs watch on.

The `taginfo' file defines programs to execute when someone executes a tag or rtag command. The `taginfo' file has the standard form for administrative files (see section Reference manual for the Administrative files), where each line is a regular expression followed by a command to execute. The arguments passed to the command are, in order, the tagname, operation (add for tag, mov for tag -F, and del for tag -d), repository, and any remaining are pairs of filename revision. A non-zero exit of the filter program will cause the tag to be aborted.

Annotate command

Command: cvs annotate [-lf] [-r rev|-D date] files ...

For each file in files, print the head revision of the trunk, together with information on the last modification for each line. For example:

$ cvs annotate ssfile
Annotations for ssfile
1.1          (mary     27-Mar-96): ssfile line 1
1.2          (joe      28-Mar-96): ssfile line 2

The file `ssfile' currently contains two lines. The ssfile line 1 line was checked in by mary on March 27. Then, on March 28, joe added a line ssfile line 2, without modifying the ssfile line 1 line. This report doesn't tell you anything about lines which have been deleted or replaced; you need to use cvs diff for that (see section diff--Run diffs between revisions).

These standard options are available with annotate (see section Common command options, for a complete description of them):

-D date
Annotate the most recent revision no later than date.
Only useful with the `-D date' or `-r tag' flags. If no matching revision is found, annotate the most recent revision (instead of ignoring the file).
Local; run only in current working directory. See section Recursive behavior.
-r tag
Annotate revision tag.

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