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Full Discussion: Perl regex
Top Forums Programming Perl regex Post 302791487 by durden_tyler on Monday 8th of April 2013 02:45:36 PM
Old 04-08-2013
Your original regex checked only for version 10 and the sub-versions of Mac OS X Server or non-servers. If that was intentional, then you could do something like this -

Code:
$
$ perl -le 'BEGIN {$output = "blah Mac OS X Server 10.7.5 blah"} $OSRELEASE = $1 if $output =~ /((Mac )?OS X (Server )?10\.[\d.]+)/; print $OSRELEASE'
Mac OS X Server 10.7.5
$
$
$ perl -le 'BEGIN {$output = "blah Mac OS X 10.7.5 blah"} $OSRELEASE = $1 if $output =~ /((Mac )?OS X (Server )?10\.[\d.]+)/; print $OSRELEASE'
Mac OS X 10.7.5
$
$
$ perl -le 'BEGIN {$output = "blah OS X Server 10.8.2 blah"} $OSRELEASE = $1 if $output =~ /((Mac )?OS X (Server )?10\.[\d.]+)/; print $OSRELEASE'
OS X Server 10.8.2
$
$
$ perl -le 'BEGIN {$output = "blah OS X 10.8.2 blah"} $OSRELEASE = $1 if $output =~ /((Mac )?OS X (Server )?10\.[\d.]+)/; print $OSRELEASE'
OS X 10.8.2
$
$
$ # Won't work with versions less than 10
$
$ perl -le 'BEGIN {$output = "blah Mac OS X 9.7.5 blah"} $OSRELEASE = $1 if $output =~ /((Mac )?OS X (Server )?10\.[\d.]+)/; print $OSRELEASE'
$
$ perl -le 'BEGIN {$output = "blah Mac OS X Server 9.7.5 blah"} $OSRELEASE = $1 if $output =~ /((Mac )?OS X (Server )?10\.[\d.]+)/; print $OSRELEASE'
$
$

If you had wanted to test for any version (not just 10), then something like this could be used -

Code:
$
$
$ perl -le 'BEGIN {$output = "blah Mac OS X Server 10.7.5 blah"} $OSRELEASE = $1 if $output =~ /((Mac )?OS X (Server )?[\d.]+)/; print $OSRELEASE'
Mac OS X Server 10.7.5
$
$ perl -le 'BEGIN {$output = "blah Mac OS X 10.7.5 blah"} $OSRELEASE = $1 if $output =~ /((Mac )?OS X (Server )?[\d.]+)/; print $OSRELEASE'
Mac OS X 10.7.5
$
$ perl -le 'BEGIN {$output = "blah OS X Server 10.8.2 blah"} $OSRELEASE = $1 if $output =~ /((Mac )?OS X (Server )?[\d.]+)/; print $OSRELEASE'
OS X Server 10.8.2
$
$
$ perl -le 'BEGIN {$output = "blah OS X 10.8.2 blah"} $OSRELEASE = $1 if $output =~ /((Mac )?OS X (Server )?[\d.]+)/; print $OSRELEASE'
OS X 10.8.2
$
$
$ perl -le 'BEGIN {$output = "blah Mac OS X Server 9.7.5 blah"} $OSRELEASE = $1 if $output =~ /((Mac )?OS X (Server )?[\d.]+)/; print $OSRELEASE'
Mac OS X Server 9.7.5
$
$
$ perl -le 'BEGIN {$output = "blah Mac OS X 9.7.5 blah"} $OSRELEASE = $1 if $output =~ /((Mac )?OS X (Server )?[\d.]+)/; print $OSRELEASE'
Mac OS X 9.7.5
$
$

 

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LEARN ABOUT X11R4

perlmacos

PERLMACOS(1)						 Perl Programmers Reference Guide					      PERLMACOS(1)

NAME

       README.macos - Perl under Mac OS (Classic)

SYNOPSIS

       This document briefly describes perl under Mac OS (Classic).  If you are running perl under Mac OS X, you don't want to be here (unless you
       are in the Classic environment under Mac OS X).

       When we say "Mac OS" below, we mean Mac OS 7, 8, and 9, and not Mac OS X.

DESCRIPTION

       The latest perl source itself builds on Mac OS, with some additional pieces. Support for Mac OS is now in the perl core, and MacPerl is
       kept in close sync with regular perl releases.

       To build perl for Mac OS (as an MPW tool), you will need the addition of the macos subdirectory, distributed separately.  It includes extra
       source files, config files, and make files.  It also includes extra Mac-specific modules.

       To build the MacPerl application, you will also need the macperl directory, which includes the source files for creating the application
       itself.

       All of this is available from the development site, via HTTP (in the MacPerl Installer, which includes all the source and binaries) and
       anonymous CVS.

	       http://dev.macperl.org/

       The source is also in the main perl repository in the macperl branch (the 5.6 source is in the maint-5.6/macperl branch).

       You will also need compilers and libraries, all of them freely available.  These are linked to from the SourceForge site. Go that site for
       all things having to do with MacPerl development.

       MacPerl 5.6.1 and later are supported on Mac OS 8.1 and later, for 68040 and PowerPC architectures.  The MPW tool may be used on Mac OS
       7.5.5 and 68030 computers.

       MacPerl 5.2.0r4 is also available, on the CPAN and on SourceForge.  It is based on perl 5.004, and works with Mac OS 7.5.5 and 68030 com-
       puters.

AUTHOR

       perl was ported to Mac OS by Matthias Neeracher <neeracher@mac.com>.  It is currently maintained by Chris Nandor <pudge@pobox.com>.

DATE

       Last modified 2002.05.02.

perl v5.8.9							    2007-11-17							      PERLMACOS(1)
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