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.\" ========================================================================
.\"
.IX Title "WHAT 1"
.TH WHAT 1 "2001-06-06" "perl v5.20.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
what \- extract version information from a file
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
what [ \f(CW\*(C`\-s\*(C'\fR ] filename ...
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
what searches each filename for occurrences of the pattern
\&\fB@\fR(#) that the \s-1SCCS\s0 get command substitutes for the \f(CW%Z\fR% \s-1ID\s0
keyword, and prints what follows up to a ", >, \s-1NEWLINE,\s0
\&\e, or null character. What can be used on any type of file,
\&\s-1NOT\s0 just \s-1SCCS\s0 files. Just put the magic 4 character \fB@\fR(#) 
pattern in your file and you are set.
.SS "\s-1OPTIONS\s0"
.IX Subsection "OPTIONS"
\&\fB\-\fR\fBs\fR Stop after the first occurrence of the pattern.
.SH "ENVIRONMENT"
.IX Header "ENVIRONMENT"
The working of \fBwhat\fR is not influenced by any environment variables.
.SH "EXAMPLES"
.IX Header "EXAMPLES"
If a Perl program test1.pl contains:
.PP
.Vb 1
\&  my $REV = \*(Aq@(# ) $Revision: 1.3 ...
.Ve
.PP
and a C program test2.c contains:
.PP
.Vb 1
\&  char rcsid[] = "@(# ) $Revision: 1.15 ....
.Ve
.PP
and the C program is compiled to a.out...
.PP
The command:
.PP
prompt%> what test1.pl test2.c a.out
.PP
produces:
.PP
\&\fBtest1.pl:\fR
        \fB\f(CB$Revision\fB\fR\fB: 1.3 $';\fR
.PP
\&\fBtest2.c:\fR
        \fB\f(CB$Revision\fB\fR\fB: 1.15 $";\fR
.PP
\&\fBa.out;\fR
        \fB\f(CB$Revision\fB\fR\fB: 1.15 $\fR
.SH "BUGS"
.IX Header "BUGS"
\&\fBwhat\fR has no known bugs.
.SH "REVISION HISTORY"
.IX Header "REVISION HISTORY"
\&\f(CW$Log:\fR what,v $
Revision 1.1.1.1  2001/06/06 08:55:22  sdague
initial import
.PP
Revision 1.1  2001/05/14 00:49:40  sdague
added more files
 Revision 1.2 1999/03/28 06:28:47 schumacks Handles binary files better
.PP
Revision 1.1 1999/03/23 10:57:39 schumacks Initial revision
.PP
\&\f(CW$Revision:\fR 1.1.1.1 $
.SH "AUTHOR"
.IX Header "AUTHOR"
This Perl implementation of \fBwhat\fR was written by Ken Schumack schumacks@att.net
.SH "COPYRIGHT and LICENSE"
.IX Header "COPYRIGHT and LICENSE"
This program is copyright by Ken Schumack 1999.
.PP
This program is free and open software. You may use, modify, distribute
and sell this program (and any modified variants) in any way you wish,
provided you do not restrict others from doing the same.