NAME
what — get SCCS identification information
DESCRIPTION
The
what
command searches the given files for all occurrences of the pattern that
get(1)
substitutes for
%Z%
(currently @(#) at this printing)
and prints out what follows until the first
",
>,
new-line,
\,
or null character.
For example, if the C program in file
f.c
contains
char ident[] = "@(#)identification information";
and
f.c
is compiled to yield
f.o
and
a.out,
the command
prints
- f.c:
identification information
- f.o:
identification information
- a.out:
identification information
what
is intended to be used in conjunction with the
SCCS
get
command (see
get(1))
which automatically inserts identifying information,
but it can also be used where the information is inserted manually.
Options
what
recognizes the following option:
- -s
Quit after finding the first occurrence of pattern in each file.
EXTERNAL INFLUENCES
Environment Variables
LC_CTYPE
determines the interpretation of the pattern substituted for
%Z%
as single- and/or multi-byte characters.
LC_MESSAGES
determines the language in which messages are displayed.
If
LC_CTYPE
or
LC_MESSAGES
is not specified in the environment
or is set to the empty string, the value of
LANG
is used as a default for each unspecified or empty variable.
If
LANG
is not specified or is set to the empty string, a default of "C" (see
lang(5))
is used instead of
LANG.
If any internationalization variable contains an invalid setting,
what
behaves as if all internationalization variables are set to "C".
See
environ(5).
International Code Set Support
Single-byte and multi-byte character code sets are supported.
DIAGNOSTICS
Exit status is 0 if any matches are found, otherwise 1.
Use
help
for explanations (see
sccshelp(1)).
WARNINGS
The pattern
@(#)
may occasionally appear unintentionally in random files,
but this causes no harm in nearly all cases.
STANDARDS CONFORMANCE
what: SVID2, SVID3, XPG2, XPG3, XPG4
