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手册页第 1 部分:用户命令     Oracle Solaris 11 Information Library (简体中文)
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what

- extract SCCS version information from a file

用法概要

what [-s] filename...

描述

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.

选项

The following option is supported:

-s

Stops after the first occurrence of the pattern.

示例

示例 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

退出状态

The following exit values are returned:

0

Any matches were found.

1

No matches found.

环境变量

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.

属性

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

ATTRIBUTE TYPE
ATTRIBUTE VALUE
Availability
developer/build/make
Interface Stability
Committed
Standard

另请参见

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)

诊断

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

已知问题

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