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Full Discussion: Comparing Version Numbers
Top Forums UNIX for Dummies Questions & Answers Comparing Version Numbers Post 302269312 by davewg on Wednesday 17th of December 2008 10:54:47 AM
Old 12-17-2008
Question Comparing Version Numbers

Hi There!

Apologies if this has been asked previously but I couldn't find the answer I was hoping for.

Basically, all I want to do is compare the OS X version against the version that I require in my script. So I'm retrieving the OS version using defaults read, but how can I compare this against another version number to see which is the greatest / newest?

Many thanks in advance...
davewg
Smilie
 

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CHDIST(1)																 CHDIST(1)

NAME
chdist - script to easily play with several distributions SYNOPSIS
chdist [options] [command] [command parameters] DESCRIPTION
chdist is a rewrite of what used to be known as 'MultiDistroTools' (or mdt). Its use is to create 'APT trees' for several distributions, making it easy to query the status of packages in other distribution without using chroots, for instance. OPTIONS
-h, --help Provide a usage message. -d, --data-dir DIR Choose data directory (default: $HOME/.chdist/). -a, --arch ARCH Choose architecture (default: `dpkg --print-architecture`). --version Display version information. COMMANDS
create DIST [URL RELEASE SECTIONS] Prepare a new tree named DIST apt-get DIST <update|source|...> Run apt-get inside DIST apt-cache DIST <show|showsrc|...> Run apt-cache inside DIST apt-rdepends DIST [...] Run apt-rdepends inside DIST src2bin DIST SRCPKG List binary packages for SRCPKG in DIST bin2src DIST BINPKG List source package for BINPKG in DIST compare-packages DIST1 DIST2 [DIST3, ...] compare-bin-packages DIST1 DIST2 [DIST3, ...] List versions of packages in several DISTributions compare-versions DIST1 DIST2 compare-bin-versions DIST1 DIST2 Same as compare-packages/compare-bin-packages, but also runs dpkg --compare-versions and display where the package is newer. compare-src-bin-packages DIST Compare sources and binaries for DIST compare-src-bin-versions DIST Same as compare-src-bin-packages, but also run dpkg --compare-versions and display where the package is newer grep-dctrl-packages DIST [...] Run grep-dctrl on *_Packages inside DIST grep-dctrl-sources DIST [...] Run grep-dctrl on *_Sources inside DIST list List available DISTs COPYRIGHT
This program is copyright 2007 by Lucas Nussbaum and Luk Claes. This program comes with ABSOLUTELY NO WARRANTY. It is licensed under the terms of the GPL, either version 2 of the License, or (at your option) any later version. Debian Utilities 2013-12-23 CHDIST(1)
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