NAME

what − Displays identifying information for Source Code Control System (SCCS) files

SYNOPSIS

what [-s] file ... 

The what command searches the named files for all occurrences of the pattern that get(1) substitutes for the %Z% keyletter, and writes to standard output whatever follows until the first  ", >, newline, \ or NUL character.. 

FLAGS

-sSearches for just the first occurrence of @(#). 

DESCRIPTION

By convention, the value substituted by get(1) for the %Z% keyletter is @(#).  (See the get(1) command or the prs(1) command for a description of identification keywords.) 

The what command writes to standard output whatever follows the pattern up to but not including the first " (double quote), > (redirection symbol), newline character, \ (backslash), or null character.  If you specify more than one file, each line of output is preceded by the name of the file it is read from; otherwise, the filename is not displayed.  If no file is specified, what reads from standard input. 

The what command is intended for use in conjunction with the get command, which automatically inserts the identifying information.  You can also use the what command on files where the information is inserted manually. 

EXAMPLES

Suppose that the file test.c contains a C program that includes the line:

char ident[ ] = "@(#)Test Program";

If you compile test.c to produce test.o and a.out, then entering the command:

what test.c test.o a.out

displays:

test.c:
Test Program
test.o:
Test Program
a.out:
Test Program

EXIT STATUS

The following exit values are returned:

0Matches were found. 

1No matches were found. 

ENVIRONMENT VARIABLES

The following environment variables affect the execution of what:

LANGProvide a default value for the internationalization variables that are unset or null. If LANG is unset or null, the corresponding value from the implementation-specific default locale is used. If any of the internationalization variables contains an invalid setting, the utility behaves as if none of the variables had been defined. 

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

LC_TYPE
Determine the locale for the interpretation of sequences of bytes of text data as characters (for example, single, 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 contents of diagnostic messages written to standard error.

NLSPATH
Determine the location of message catalogs for the processing of LC_MESSAGES. 

RELATED INFORMATION

Commands:  admin(1), cdc(1), comb(1), delta(1), get(1), prs(1), rmdel(1), sact(1), sccsdiff(1), sccshelp(1), unget(1), val(1). 

Files:  sccsfile(4). 

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