(cvs.info.gz) Using keywords

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(cvs.info.gz) Keyword list

(cvs.info.gz) Keyword substitution

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 12.2 Using keywords
 ===================
 
 To include a keyword string you simply include the relevant text
 string, such as `$Id$', inside the file, and commit the file.  CVS will
 automatically (Or, more accurately, as part of the update run that
 automatically happens after a commit.)  expand the string as part of
 the commit operation.
 
    It is common to embed the `$Id$' string in the source files so that
 it gets passed through to generated files.  For example, if you are
 managing computer program source code, you might include a variable
 which is initialized to contain that string.  Or some C compilers may
 provide a `#pragma ident' directive.  Or a document management system
 might provide a way to pass a string through to generated files.
 
    The `ident' command (which is part of the RCS package) can be used
 to extract keywords and their values from a file.  This can be handy
 for text files, but it is even more useful for extracting keywords from
 binary files.
 
      $ ident samp.c
      samp.c:
           $Id: samp.c,v 1.5 1993/10/19 14:57:32 ceder Exp $
      $ gcc samp.c
      $ ident a.out
      a.out:
           $Id: samp.c,v 1.5 1993/10/19 14:57:32 ceder Exp $
 
    SCCS is another popular revision control system.  It has a command,
 `what', which is very similar to `ident' and used for the same purpose.
 Many sites without RCS have SCCS.  Since `what' looks for the
 character sequence `@(#)' it is easy to include keywords that are
 detected by either command.  Simply prefix the keyword with the magic
 SCCS phrase, like this:
 
      static char *id="@(#) $Id: ab.c,v 1.5 1993/10/19 14:57:32 ceder Exp $";
 

Info Catalog

(cvs.info.gz) Keyword list

(cvs.info.gz) Keyword substitution

(cvs.info.gz) Avoiding substitution