IDENT(1) UNIX Programmer's Manual IDENT(1)NAMEident - identify RCS keyword strings in files
SYNOPSISident [ -q ] [ -V ] [ file ... ]
DESCRIPTIONident 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 pat-
terns in a file. The option -V prints ident'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 exam-
ple 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
$XConsortium$.
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
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IDENT(1) UNIX Programmer's Manual IDENT(1)
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 pathname of the
RCS file, the revision number, the date and time, the
author, the state, and the locker (if locked).
$Id$ Same as $Header$, except that the RCS filename is
without a path.
$Locker$
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 name of the RCS file without a path.
$Revision$
The revision number assigned to the revision.
$Source$
The full pathname of the RCS file.
$State$
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
\ \\
GNU 1993/11/09 2
IDENT(1) UNIX Programmer's Manual IDENT(1)IDENTIFICATION
Author: Walter F. Tichy.
Manual Page Revision: 5.4; Release Date: 1993/11/09.
Copyright (C) 1982, 1988, 1989 Walter F. Tichy.
Copyright (C) 1990, 1992, 1993 Paul Eggert.
SEE ALSOci(1), co(1), rcs(1), rcsdiff(1), rcsintro(1), rcsmerge(1),
rlog(1), rcsfile(5)
Walter F. Tichy, RCS--A System for Version Control,
Software--Practice & Experience 15, 7 (July 1985), 637-654.
GNU 1993/11/09 3
