From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <zsh-users-return-20969-mason-zsh=primenet.com.au@zsh.org>
Received: (qmail 484 invoked by alias); 19 Nov 2015 22:16:15 -0000
Mailing-List: contact zsh-users-help@zsh.org; run by ezmlm
Precedence: bulk
X-No-Archive: yes
List-Id: Zsh Users List <zsh-users.zsh.org>
List-Post: <mailto:zsh-users@zsh.org>
List-Help: <mailto:zsh-users-help@zsh.org>
X-Seq: 20969
Received: (qmail 14726 invoked from network); 19 Nov 2015 22:16:14 -0000
X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on f.primenet.com.au
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM,
	T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20120113;
        h=from:to:subject:date:message-id:mime-version:content-type;
        bh=+guJsuLgEXWn8N8bEm+Q8IldJaMnL9jJXu5WZWdhAKk=;
        b=AkDiNFF0ppRPF2Tg93o4OydXekz2ooGZLBqxCmLVOJBOIGsziz8YMZXYj0ROh3lPz4
         7FtjRa2VRQgvZEeJkhW1aqlyzBqN0iOtFXQ9Kb5wL8piARGwi+hKaHoyZEkerpQjqneR
         524rTI9cgyzFJO/cyE9NMM/nX5BB0sewrHqb1Io1dT/gM4ENxc737XRISjcnz0W1MWoF
         2LsMAjrSmqcJAyii0CkAKanERgk8AcMMUcADVbR/qPkpTkieVdqCsT7glOwu2W4JC0BN
         k0+8PrArKATnj8oP8D41ZfhUVwQnD6jtwotQERAB0UIY7L6ZYuLEumtQ8y3s7yu6MRDb
         hY1A==
X-Received: by 10.129.145.11 with SMTP id i11mr9292228ywg.118.1447971371226;
        Thu, 19 Nov 2015 14:16:11 -0800 (PST)
From: "TJ Luoma" <luomat@gmail.com>
To: "Zsh-Users List" <zsh-users@zsh.org>
Subject: Version String Comparison
Date: Thu, 19 Nov 2015 17:16:08 -0500
Message-ID: <9A09EF7C-A81B-4ED9-A266-C6A53BC98167@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; format=flowed
X-Mailer: MailMate (1.9.3r5180)


I am looking for a zsh way to compare version numbers, which is smart 
enough to know that, for example

"6.7.0.36" is less than "6.7.0.0044"

I have been using a 'version' function below, which I found somewhere 
and I _thought_ worked for this scenario, but I'm now finding that it 
does not:

	INSTALLED_VERSION="6.7.0.36"
	LATEST_VERSION="6.7.0.0044"

	function version { echo "$@" | awk -F. '{ printf("28%03d%03d%03d\n", 
$1,$2,$3,$4); }'; }

	if [ $(version ${LATEST_VERSION}) -le $(version ${INSTALLED_VERSION}) ]
	then
			# No Update Needed
		echo "$NAME: Up To Date (Installed: $INSTALLED_VERSION and Latest: 
$LATEST_VERSION)"
		exit 0
	fi

But that gives me


	Up To Date (Installed: 6.7.0.36 and Latest: 6.7.0.0044)

(I'd also like to be able to compare version strings such as "5.0b5" and 
"5.0b10")

TjL