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IDENT

Section: User Commands (1)
Updated: 1993/11/09
Index

NAME

ident - identify RCS keyword strings in files

SYNOPSIS

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

DESCRIPTION

identsearches 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 commandco(1),but can also be inserted manually.The option-qsuppressesthe warning given if there are no patterns in a file.The option-Vprintsident'sversion number.

identworks on text files as well as object files and dumps.For example, if the C program inf.ccontains

: #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; }

andf.cis compiled intof.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 likercsidabove 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 thercsidstring, as shown in the example above.

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

KEYWORDS

Here is the list of keywords currently maintained byco(1).All times are given in Coordinated Universal Time (UTC,sometimes called GMT) by default, but if the fileswere checked out withco's-zzoneoption, 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 pathname of the RCS file, therevision 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.Forident'spurposes, 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-soption ofrcs(1)orci(1).

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

char     escape sequencetab      \tnewline  \nspace    \040$        \044\        \\

IDENTIFICATION

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