CentOS - May 2016 - one-shot yum command to match rpms between systems?

Given a list of rpms on one system (rpm -qa > list.txt), is there a one-shot
command that I can run on another system to remove all of the rpms not listed
and add any that are on the list and not present on the second system?

-- 
MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com

On 18 May 2016 07:55, "Frank Cox" <theatre at
melvilletheatre.com> wrote:
>
> Given a list of rpms on one system (rpm -qa > list.txt), is there a
one-shot command that I can run on another system to remove all of the rpms
not listed and add any that are on the list and not present on the second
system?
>
If you had an internal repo of these packages you could yum distro-sync ...
otherwise there is no one shot command to do this given a list.

And of course as will be pointed out by many the only right answer is yum
update anyway given cherry picking updates is not supported.

On Wed, 18 May 2016 09:30:54 +0100
James Hogarth wrote:
> And of course as will be pointed out by many the only right answer is yum
> update anyway given cherry picking updates is not supported.
The objective is not to cherry pick updates, but rather to install a second
system with packages that match the first system.  After fine-tuning the
installed packages and stripping out the unnecessary stuff, it would be nice to
just say "make that system look like this one" -- rsync for yum if you
will.  The specific package versions aren't important at that stage since I
can run yum update after the initial installation.

-- 
MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com

> On May 18, 2016, at 2:54 AM, Frank Cox <theatre at
melvilletheatre.com> wrote:
> 
> Given a list of rpms on one system (rpm -qa > list.txt), is there a
one-shot command that I can run on another system to remove all of the rpms not
listed and add any that are on the list and not present on the second system?
It wouldn?t be a one liner except in the most general sense that you can string
multiple bash commands with ?;?,  but I?m sure someone can do something clever
with uniq(1).

						Noam

On Wed, May 18, 2016 at 12:54:51AM -0600, Frank Cox
wrote:
> Given a list of rpms on one system (rpm -qa > list.txt), is there a
> one-shot command that I can run on another system to remove all of
> the rpms not listed and add any that are on the list and not present
> on the second system? 
I'd probably turn it into a puppet manifest or ansible playbook, and
use that to install the packages.  I'd not use rpm -qa unadorned,
though, but rpm -qa --qf "%{NAME}.%{ARCH}\n".

-- 
Jonathan Billings <billings at negate.org>

On Wed, May 18, 2016 at 12:54:51AM -0600, Frank Cox
wrote:
> Given a list of rpms on one system (rpm -qa > list.txt), is there a
> one-shot command that I can run on another system to remove all of
> the rpms not listed and add any that are on the list and not present
> on the second system?
I think you can pull this off with `yum shell`. First, though, don't do
`rpm -qa` as your list ? do `rpm -qa --qf '%{name}.%{arch}\n'|sort`
instead.
That way, version numbers won't complicate things.

And then, on the second system (the one you want to change), try this
crazy oneliner:

( rpm -qa --qf '%{name}.%{arch}\n' | sort | diff
--old-line-format='install %L' --new-line-format='remove %L'
-unchanged-line-format='' list.txt - ; echo run ) | yum shell

It's not really as bad as it looks ? the diff formatting is just
verbose. The first command just gets the package list from the current
system; then we sort it, and then get the difference in a formatted as
a list of "install" and "remove" commands. Then add
"run" to the end,
and pipe all of that to yum shell.

This is totally untested but I'll give it good odds of working. :)





-- 
Matthew Miller
<mattdm at fedoraproject.org>
Fedora Project Leader

Jonathan Billings ????? 2016-05-18 20:16:
> On Wed, May 18, 2016 at 12:54:51AM -0600, Frank Cox wrote:
>> Given a list of rpms on one system (rpm -qa > list.txt), is there a
>> one-shot command that I can run on another system to remove all of
>> the rpms not listed and add any that are on the list and not present
>> on the second system?
> 
> I'd probably turn it into a puppet manifest or ansible playbook, and
> use that to install the packages.  I'd not use rpm -qa unadorned,
> though, but rpm -qa --qf "%{NAME}.%{ARCH}\n".
You can either use the tools suggested or write a simple helper script.
Diff sorted list of packages on these two systems (using 
"%{NAME}.%{ARCH}" format).
Add the packages in lines starting with "<", remove the packages in
lines starting with ">".
Sort of.

On Wed, 18 May 2016 13:32:36 -0400
Matthew Miller wrote:
> ( rpm -qa --qf '%{name}.%{arch}\n' | sort | diff
--old-line-format='install %
> L' --new-line-format='remove %L'
-unchanged-line-format='' list.txt - ; echo
> run ) | yum shell
This looks pretty much like what I had in mind.

Great!  Thanks!

-- 
MELVILLE THEATRE ~ Real D 3D Digital Cinema ~ www.melvilletheatre.com

> On May 18, 2016, at 1:02 PM, Noam Bernstein <noam.bernstein at
nrl.navy.mil> wrote:
> 
> It wouldn?t be a one liner except in the most general sense that you can
string multiple bash commands with ?;?,  but I?m sure someone can do something
clever with uniq(1).
I meant comm(1), by the way, although the other answers in this thread,
especially the ?yum shell? based ones, are cleaner.

									Noam

On 05/18/2016 12:32 PM, Matthew Miller wrote:
> On Wed, May 18, 2016 at 12:54:51AM -0600, Frank Cox wrote:
>> Given a list of rpms on one system (rpm -qa > list.txt), is there a
>> one-shot command that I can run on another system to remove all of
>> the rpms not listed and add any that are on the list and not present
>> on the second system?
> 
> I think you can pull this off with `yum shell`. First, though, don't do
> `rpm -qa` as your list ? do `rpm -qa --qf '%{name}.%{arch}\n'|sort`
instead.
> That way, version numbers won't complicate things.
Right .. if you are not at the same update levels then name.arch is
better than full versions.
> 
> And then, on the second system (the one you want to change), try this
> crazy oneliner:
> 
> ( rpm -qa --qf '%{name}.%{arch}\n' | sort | diff
--old-line-format='install %L' --new-line-format='remove %L'
-unchanged-line-format='' list.txt - ; echo run ) | yum shell
> 
> It's not really as bad as it looks ? the diff formatting is just
> verbose. The first command just gets the package list from the current
> system; then we sort it, and then get the difference in a formatted as
> a list of "install" and "remove" commands. Then add
"run" to the end,
> and pipe all of that to yum shell.
> 
> This is totally untested but I'll give it good odds of working.



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