Re Undoing an update

[Christofer C. Bell]

Craig wants to roll back updates, not restore a list of package selections.
He wants to go back to the versions of software that were on his system
previous to the update.  A list of package selections will not do this.

ie;

I have foo-3.0.1 installed on my system.  I upgrade to foo-3.0.2.  Restoring
a selections list will not downgrade the package because only the package
name, 'foo', is represented.

On Fri, Jan 30, 2009 at 2:27 PM, Jack <quiet_celt at yahoo.com> wrote:

> I forgot to tell you how to save and restore for future reference.
>
> Here they are.
>
> ------------------------------------------------------------
> To save your installed list do this:
>
> dpkg --get selections | grep -v deinstall > packagestateXXXXXXXX.txt
>
> where XXXXXXXX is the current date. Or use your own convention.
> The grep -v deinstall removes entries of packages that are marked for
> removal.
>
> ===============================================================
>
> To later restore them do this:
>
> dpkg --clear-selections
> dpkg --set-selections < packagestateXXXXXXXX.txt
> apt-get -u dselect-upgrade --purge
>
> ----------------------------------------------------------------
>
> Note this is all commandline stuff and assumes you are logged in as root.
> Simply prepend "sudo" to each line if you are not root. Note, also this is
> destructive. I believe it might remove and purge some software not on this
> list. I've never tried this so proceed at your own risk. Alternatively you
> could remove the --purge option to not purge any config files on anything it
> might remove.
>
> There might be a utility out there to do this for you, but I dn't know of
> it.
>
> Brian J
>
>
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-- 
Chris
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