Login or Register to Ask a Question and Join Our Community

Sponsored Content
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
$
$

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

q with Perl Regex

For a programming exercise, I am mean to design a Perl script that detects double letters in a text file. I tried the following expressions # Check for any double letter within the alphabet /+/ # Check for any repetition of an alphanumeric character /\w+/ Im aware that the... (8 Replies)
Discussion started by: JamesGoh
8 Replies

2. Shell Programming and Scripting

Perl REGEX

Hi, Can anyone help me to find regular expression for the following in Perl? "The string can only contain lower case letters (a-z) and no more than one of any letter." For example: "table" is accepted, whether "dude" is not. I have coded like this: $str = "table"; if ($str =~ m/\b()\b/) {... (4 Replies)
Discussion started by: evilfreakz
4 Replies

3. Shell Programming and Scripting

Perl regex

I have got numbers like l255677 l376039 l188144 l340482 l440700 l254113 to match the numbers starting with '13' what would be the regex =~/13(.*)/ =======>This is not working .... But for user123,user657 regex =~/user(.*)/ ========>works Thanks for help..!! (7 Replies)
Discussion started by: trina_1
7 Replies

4. Shell Programming and Scripting

Converting perl regex to sed regex

I am having trouble parsing rpm filenames in a shell script.. I found a snippet of perl code that will perform the task but I really don't have time to rewrite the entire script in perl. I cannot for the life of me convert this code into something sed-friendly: if ($rpm =~ /(*)-(*)-(*)\.(.*)/)... (1 Reply)
Discussion started by: suntzu
1 Replies

5. UNIX for Dummies Questions & Answers

Perl Regex Help!!!

Hi, I get the following when I cat a file *.log xxxxx ===== dasdas gwdgsg fdsagfsag agsdfag ===== random data ===== My output should look like : If the random data after the 2nd ==== is null then OK should be printed else the random data should be printed. How do I go about this... (5 Replies)
Discussion started by: manutd
5 Replies

6. Programming

Perl regex

HI, I'm new to perl and need simple regex for reading a file using my perl script. The text file reads as - filename=/pot/uio/current/myremificates.txt certificates=/pot/uio/current/userdir/conf/user/gamma/settings/security/... (3 Replies)
Discussion started by: jhamaks
3 Replies

7. Programming

Perl regex

Hello, I'm trying to get a quick help on regex since i'm not a regular programmer. Below is the line i'm trying to apply my regex to..i want to use the regex in a for loop and this line will keep on changing. subject=... (4 Replies)
Discussion started by: jhamaks
4 Replies

8. Shell Programming and Scripting

?= in perl regex

Could anyone please make me understand how the ?= works below .. After executing this I am getting the same output. $string="I love chocolate."; $string =~ s/chocolate(?= ice)/vanilla/; print "$string\n"; (2 Replies)
Discussion started by: scriptscript
2 Replies

9. Shell Programming and Scripting

Perl, RegEx - Help me to understand the regex!

I am not a big expert in regex and have just little understanding of that language. Could you help me to understand the regular Perl expression: ^(?!if\b|else\b|while\b|)(?:+?\s+){1,6}(+\s*)\(*\) *?(?:^*;?+){0,10}\{ ------ This is regex to select functions from a C/C++ source and defined in... (2 Replies)
Discussion started by: alex_5161
2 Replies

10. Shell Programming and Scripting

Perl REGEX help

Experts - I found a script on one of the servers that I work on and I need help understanding one of the lines. I know what the script does, but I'm having a hard time understanding the grouping. Can someone help me with this? Here's the script... #!/usr/bin/perl use strict; use... (2 Replies)
Discussion started by: timj123
2 Replies

LEARN ABOUT OSX

mac::aete::app

Mac::AETE::App(3)					User Contributed Perl Documentation					 Mac::AETE::App(3)

NAME

       Mac::AETE::App - reads the Macintosh Apple event dictionary from an application.

SYNOPSIS

	    use Mac::AETE::App;
	    use Mac::AETE::Format::Dictionary;

	    $app = App->new("My Application");
	    $formatter = Dictionary->new;
	    $app->set_format($formatter);
	    $app->read;
	    $app->write;

DESCRIPTION

       The App module simplifies reading the Apple event dictionary from an application.  It will launch the application if necessary to obtain
       the dictionary.

       Methods

       new	 Example: ($name is the name of the application.)

		      use Mac::AETE::App;
		      use Mac::AETE::Format::Dictionary;

		      $app = App->new($aete_handle, $name);

       read	 (Inherited from Mac::AETE::Parser.)

		 Reads the data contained in the AETE resource or handle. Example:

		      $app->read;

       set_format
		 (Inherited from Mac::AETE::Parser.)

		 Sets the output formatter used during by the 'write' subroutine. Example:

		      $formatter = Dictionary->new;
		      $app->set_format($formatter);

       copy	 (Inherited from Mac::AETE::Parser.)

		 Copies all suites from one Parser object into another. Example:

		      $aete2 = Parser->new($aete_handle2, $another_name);
		      $app->copy($aete2);

		 copies the suites from $aete2 into $aete.

       merge	 (Inherited from Mac::AETE::Parser.)

		 Merges suites from one Parser object into another. Only the suites that exist in both objects will be replaced. Example:

		      $aete3 = Parser->new($aete_handle2, $another_name);
		      $app->merge($aete3);

       write	 (Inherited from Mac::AETE::Parser.)

		 Prints the contents of the AETE or AEUT resource using the current formatter.

		      $app->write;

INHERITANCE

       Inherits from Mac::AETE::Parser.

AUTHOR

       David Schooley <dcschooley@mediaone.net>

perl v5.10.0							    2005-05-16							 Mac::AETE::App(3)
All times are GMT -4. The time now is 02:02 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy