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Full Discussion: Rolling Back an Update
Operating Systems Linux Rolling Back an Update Post 302637707 by mark54g on Wednesday 9th of May 2012 07:36:22 AM
Old 05-09-2012
Brandon9000,

Linux does not do patches the way windows does. It uses packages. Some versions even use deltas, but the crux of it is, you cannot do what you are trying to. It is a one way proposition. The only way to avoid that is to try to claim all updates they make to any configuration files owned by a package and store them in some sort of repository linked to the version they are associated with.

You will then have to uninstall the package, install the new package (old version or new version) and then apply the config file for that version, because configuration files sometimes change formats.

LINUX IS NOT WINDOWS BUT FREE. It is an entirely different OS with different structures. EVERYTHING in LINUX is a file. Windows is very different. Is Windows POSIX compliant? Can Windows change kernels on a running OS with a splice? Does Windows have initial ram disks?

What you want are ways to save machine states, but that is an all or nothing proposition.

Might it be possible to do what you want? Sure, but it will take a very clever person a lot of time, and even more code to do it, and even in those cases, they will probably find a corner case that will bite them on the ass so hard, they will bleed money.
 

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Linux::Distribution(3pm)				User Contributed Perl Documentation				  Linux::Distribution(3pm)

NAME
Linux::Distribution - Perl extension to detect on which Linux distribution we are running. SYNOPSIS
use Linux::Distribution qw(distribution_name distribution_version); if(my $distro = distribution_name) { my $version = distribution_version(); print "you are running $distro, version $version "; } else { print "distribution unknown "; } Or else do it OO: use Linux::Distribution qw(distribution_name distribution_version); my $linux = Linux::Distribution->new; if(my $distro = $linux->distribution_name()) { my $version = $linux->distribution_version(); print "you are running $distro, version $version "; } else { print "distribution unknown "; } DESCRIPTION
This is a simple module that tries to guess on what linux distribution we are running by looking for release's files in /etc. It now looks for 'lsb-release' first as that should be the most correct and adds ubuntu support. Secondly, it will look for the distro specific files. It currently recognizes slackware, debian, suse, fedora, redhat, turbolinux, yellowdog, knoppix, mandrake, conectiva, immunix, tinysofa, va-linux, trustix, adamantix, yoper, arch-linux, libranet, gentoo, ubuntu, scientific, oracle enterprise linux and redflag. It has function to get the version for debian, suse, fedora, redhat, gentoo, slackware, scientific, oracle enterprise linux, redflag and ubuntu(lsb). People running unsupported distro's are greatly encouraged to submit patches :-) EXPORT None by default. TODO
Add the capability of recognize the version of the distribution for all recognized distributions. AUTHORS
Alexandr Ciornii <alexchorny@gmail.com>, <http://chorny.net> Alberto Re, <alberto@accidia.net> Judith Lebzelter, <judith@osdl.org> COPYRIGHT AND LICENSE
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.5 or, at your option, any later version of Perl 5 you may have available. perl v5.14.2 2012-03-18 Linux::Distribution(3pm)
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