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Full Discussion: Rolling Back an Update
Operating Systems Linux Rolling Back an Update Post 302634795 by mark54g on Thursday 3rd of May 2012 09:49:32 PM
Old 05-03-2012
It is not untenable. All you have to do is make the script take input and save the selections somewhere.

If the chosen destination is /opt/yoursoftware/version

you can easily create an /opt/yoursoftware/latest that is a link to the version installed.

Windows does not have the major advantage here. Sure you can play games with the registry, but *nix has been more flexible for decades. Nobody is suggesting you build an alternative to deb or rpm files, but you don't have to use them at all, and it makes it even simpler for dealing with any ELF compatible UNIX.

you have a tgz file, and then it explodes into a directory. That then has an install.sh and perhaps an uninstall.sh and perhaps an upgrade.sh script inside.
They do the right thing, and create backups, and the version management and voila.

If you run uninstall.sh, it then asks if you want to save your current version. If so, you can easily archive it off, because /opt/yoursoftware/latest points to the one they just installed.

This is the way *nix works.
 

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LEARN ABOUT SUNOS

gst-compprep-0.8

gst-compprep-0.8(1)						   User Commands					       gst-compprep-0.8(1)

NAME

       gst-compprep-0.8, gst-compprep - create the registry for gst-complete

SYNOPSIS

       gst-compprep-0.8 [gst-std-options]

       gst-compprep [--gst-list-mm] [--gst-mm=string] [--print] [gst-std-options]

DESCRIPTION

       gst-compprep-0.8 builds a registry of GStreamer elements and their features, which is used by gst-complete to perform context-sensitive tab
       completion of gst-launch command lines.

       By default, the registry is stored in /etc/gstreamer/compreg.xml.

       Whenever the available gstreamer plugins are modified, the registry should be regenerated by running gst-compprep as the root user.

       gst-compprep is a wrapper script that runs the latest installed version of gst-compprep-X.X. For example, if both gst-compprep-0.7 and gst-
       compprep-0.8 are installed on your system, gst-compprep runs gst-compprep-0.8.

OPTIONS

       The following options are supported by gst-compprep-0.8 and gst-compprep:

       gst-std-options Standard options available for use with most GStreamer applications.  See gst-std-options(5) for more information.

       The following options are supported by gst-compprep only:

       --gst-list-mm   List found major/minor versions. This option displays the versions that are available.

       --gst-mm=string Force  major/minor  version.  This  option  enables you to specify a specific version to run, if you do not want to run the
		       default version.

       --print	       Print wrapped command line. This option displays the command that will be run, and then runs the command.

EXAMPLES

       Example 1: Running the Wrapper Script and Displaying the Command Name

       example% gst-compprep --print
       /usr/bin/gst-compprep-0.8

FILES

       The following files are used by this application:

       /usr/bin/gst-compprep-0.Executable to create the registry for gst-complete

       /usr/bin/gst-compprep   Wrapper script that runs the latest installed version of gst-compprep-X.X

       /etc/gstreamer/compreg.xRegistry generated by gst-compprep and used by gst-complete

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWgnome-media		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |External			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       gst-complete(1), gst-feedback(1), gst-inspect(1), gst-launch(1), gst-launch-ext(1), gst-md5sum(1), gst-register(1), gst-thumbnail(1),  gst-
       typefind(1), gst-xmlinspect(1), gst-xmllaunch(1), gstreamer-properties(1), libgstreamer-0.8(3), libgstgetbits(3), gst-std-options(5)

NOTES

       Original man page written by the GStreamer team at http://gstreamer.net/.

       Updated by Brian Cameron, Sun Microsystems Inc., 2004.

SunOS 5.10							    14 Oct 2004 					       gst-compprep-0.8(1)
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