SYNOPSIS
       what [-s] file...

DESCRIPTION
       The  what  utility  shall search the given files for all occurrences of
       the pattern that get (see get )  substitutes  for  the  %Z%  keyword  (
       "@(#)"  )  and  shall  write  to standard output what follows until the
       first occurrence of one of the following:


              "   >   newline   \   NUL

OPTIONS
       The what utility shall  conform  to  the  Base  Definitions  volume  of
       IEEE Std 1003.1-2001, Section 12.2, Utility Syntax Guidelines.

       The following option shall be supported:

       -s     Quit  after  finding the first occurrence of the pattern in each
              file.


OPERANDS
       The following operands shall be supported:

       file   A pathname of a file to search.


STDIN
       Not used.

INPUT FILES
       The input files shall be of any file type.

ENVIRONMENT VARIABLES
       The following environment variables shall affect the execution of what:

       LANG   Provide a default value for the  internationalization  variables
              that  are  unset  or  null.  (See the Base Definitions volume of
              IEEE Std 1003.1-2001, Section  8.2,  Internationalization  Vari-
              ables  for the precedence of internationalization variables used
              to determine the values of locale categories.)

       LC_ALL If set to a non-empty string value, override the values  of  all
              the other internationalization variables.

       LC_CTYPE
              Determine  the  locale  for  the  interpretation of sequences of
              bytes of text data as characters (for  example,  single-byte  as
              opposed to multi-byte characters in arguments and input files).

       LC_MESSAGES
              Determine  the  locale  that should be used to affect the format

       and:


              "%s:\n\t%s\n", <pathname>, <identification string>

STDERR
       The standard error shall be used only for diagnostic messages.

OUTPUT FILES
       None.

EXTENDED DESCRIPTION
       None.

EXIT STATUS
       The following exit values shall be returned:

       0      Any matches were found.

       1      Otherwise.


CONSEQUENCES OF ERRORS
       Default.

       The following sections are informative.

APPLICATION USAGE
       The what utility is intended to be used in conjunction  with  the  SCCS
       command  get,  which automatically inserts identifying information, but
       it can also be used where the information  is  inserted  by  any  other
       means.

       When  the  string  "@(#)"  is included in a library routine in a shared
       library, it might not be found in an a.out file using that library rou-
       tine.

EXAMPLES
       If the C-language program in file f.c contains:


              char ident[] = "@(#)identification information";

       and f.c is compiled to yield f.o and a.out, then the command:


              what f.c f.o a.out

       writes:


              f.c:
                  identification information
                  ...

SEE ALSO
       get

COPYRIGHT
       Portions  of  this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
       Specifications Issue 6, Copyright (C) 2001-2003  by  the  Institute  of
       Electrical  and  Electronics  Engineers, Inc and The Open Group. In the
       event of any discrepancy between this version and the original IEEE and
       The  Open Group Standard, the original IEEE and The Open Group Standard
       is the referee document. The original Standard can be  obtained  online
       at http://www.opengroup.org/unix/online.html .