Ubuntu Manpage: ident - identify RCS keyword strings in files

NAME

       ident - identify RCS keyword strings in files

SYNOPSIS

       ident [ -q ] [ -V ] [ file ... ]

DESCRIPTION

       ident searches for all instances of the pattern $keyword: text $ in the named files or, if
       no files are named, the standard input.

       These patterns are normally inserted automatically by the RCS command co(1), but can  also
       be inserted manually.  The option -q suppresses the warning given if there are no patterns
       in a file.  The option -V prints RCS's version number.

       ident works on text files as well as object files  and  dumps.   For  example,  if  the  C
       program in f.c contains

              #include <stdio.h>
              static char const rcsid[] =
                "$Id: f.c,v 5.4 1993/11/09 17:40:15 eggert Exp $";
              int main() { return printf("%s\n", rcsid) == EOF; }

       and f.c is compiled into f.o, then the command

              ident  f.c  f.o

       will output

              f.c:
                  $Id: f.c,v 5.4 1993/11/09 17:40:15 eggert Exp $
              f.o:
                  $Id: f.c,v 5.4 1993/11/09 17:40:15 eggert Exp $

       If  a  C  program  defines  a  string  like  rcsid  above but does not use it, lint(1) may
       complain, and some C compilers will optimize away the string.  The most reliable  solution
       is to have the program use the rcsid string, as shown in the example above.

       ident finds all instances of the $keyword: text $ pattern, even if keyword is not actually
       an RCS-supported keyword.  This gives you  information  about  nonstandard  keywords  like
       $XConsortium$.

       The  pattern  normally  requires  a  colon and a space immediately after the keyword and a
       space  immediately  before  the  terminating  $,  but  for  Subversion  1.2  (and   later)
       compatibility,  ident  will also recognize the pattern $keyword:: text $ (i.e., two colons
       and a space) and  the  pattern  $keyword:: text #$  (likewise,  with  a  hash  before  the
       terminating  $).   These  are  the  fixed-width  keyword  syntax.  To summarize, the three
       recognized patterns are:

              $keyword: text $
              $keyword:: text $
              $keyword:: text #$

KEYWORDS

Here is the list of keywords currently maintained by co(1). All times are given in
Coordinated Universal Time (UTC, sometimes called GMT) by default, but if the files were
checked out with co's -zzone option, times are given with a numeric time zone indication
appended.

$Author$
The login name of the user who checked in the revision.

$Date$ The date and time the revision was checked in.

$Header$
A standard header containing the full RCS file name, the revision number, the date
and time, the author, the state, and the locker (if locked).

$Id$ Same as $Header$, except that the RCS file name is without directory components.

$Locker$
The login name of the user who locked the revision (empty if not locked).

$Log$ The log message supplied during checkin. For ident's purposes, this is equivalent
to $RCSfile$.

$Name$ The symbolic name used to check out the revision, if any.

$RCSfile$
The RCS file name without directory components.

$Revision$
The revision number assigned to the revision.

$Source$
The full RCS file name.

$State$
The state assigned to the revision with the -s option of rcs(1) or ci(1).

co(1) represents the following characters in keyword values by escape sequences to keep
keyword strings well-formed.

char escape sequence
tab \t
newline \n
space \040
$ \044
\ \\

IDENTIFICATION

       Author: Walter F. Tichy.
       Manual Page Revision: 5.10.1; Release Date: 2022-02-19.
       Copyright © 2010-2022 Thien-Thi Nguyen.
       Copyright © 1990, 1992, 1993 Paul Eggert.
       Copyright © 1982, 1988, 1989 Walter F. Tichy.

NAME

SYNOPSIS

DESCRIPTION

KEYWORDS

IDENTIFICATION

SEE ALSO