what

- extract SCCS version information from a file

Synopsis

what [-s] filename...

Description

The what utility searches each filename for occurrences of the pattern @(#) that the SCCS get command (see sccs-get(1)) substitutes for the @(#) ID keyword, and prints what follows up to a ", >, NEWLINE, \, or NULL character.

Options

The following option is supported:

-s

Stops after the first occurrence of the pattern.

Examples

Example 1 Extracting SCCS version information

If a C program in file program.c contains

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

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

example% what program.c program.o a.out

produces:

program.c:

identification information

program.o:

identification information

a.out:

identification information

Exit Status

The following exit values are returned:

0

Any matches were found.

1

No matches found.

Environment Variables

See environ(5) for descriptions of the following environment variables that affect the execution of what: LANG, LC_ALL, LC_CTYPE, LC_MESSAGES, and NLSPATH.

Attributes

See attributes(5) for descriptions of the following attributes:

See Also

sccs(1), sccs-admin(1), sccs-cdc(1), sccs-comb(1), sccs-delta(1), sccs-get(1), sccs-help(1), sccs-prs(1), sccs-prt(1), sccs-rmdel(1), sccs-sact(1), sccs-sccsdiff(1), sccs-unget(1), sccs-val(1), sccsfile(4), attributes(5), environ(5), standards(5)

Diagnostics

Use the sccs-help command for explanations of SCCS commands. See sccs-help(1).

Bugs

There is a remote possibility that a spurious occurrence of the @(#) pattern could be found by what.