Help a lot, thanks for clarifying things
2016-03-02 16:49 GMT+01:00 Todd Zullinger <tmz(a)pobox.com>:
Tim wrote:
> On Wed, 2016-03-02 at 05:40 +0100, thibaut noah wrote:
>
>> I think i misunderstand things on version numbers, thought 2:2.5.0-6
>> means version 2.2... From what you say i have the feeling that i might be
>> wrong about this.
>>
>
> epoch:version
>
> epoch 2 version 2.5.0-6
>
> Go by the decimals, file version something *point* something, has to have
> decimals in it. I've never got a grip on why there's hyphens in the
> version numbers, though.
>
In the example above, 2.5.0-6 is ${version}-${release}. The release field
is used in an rpm whenever the package is changed, which might happen
without updating the version. It should typically start at 1 and increment
for each new package, resetting to 1 when the version is updated.
As an example, I package foo-1.0. The rpm version-release will be 1.0-1.
After I push it to the repos, someone finds a bug in the packaging (say I
forgot to include a file). When I fix the package, it will still be
foo-1.0, but the release is incremented so it's now 1.0-2. When foo 1.1 or
2.0 is released upstream, the next package would be 1.1-1 or 2.0-1.
The rpm --queryformat option (--qf for short) might also be useful to this
discussion. If you want to query just the version without the epoch,
release, etc. you can use --qf to do so.
$ rpm -q --qf '%{version}\n' qemu-kvm
2.3.1
All the tags available to the --queryformat option can be shown with rpm
--querytags.
I realize that using rpm -q --qf might not be all that intuitive for new
users, but it is a handy option.
It's also worth noting that repoquery (or now dnf repoquery, I guess)
understands the --qf option (with the addition of the repoid tag to show
the repo where a package was found).
$ dnf -d0 -e0 repoquery --qf '%{name} %{version} (%{repoid})' qemu-kvm
qemu-kvm 2.3.0 (fedora)
qemu-kvm 2.3.1 (@System)
qemu-kvm 2.3.1 (updates)
Hope this helps,
--
Todd
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Liberty is always dangerous, but it is the safest thing we have.
-- Harry Emerson Fosdick
--
users mailing list
users(a)lists.fedoraproject.org
To unsubscribe or change subscription options:
https://admin.fedoraproject.org/mailman/listinfo/users
Fedora Code of Conduct:
http://fedoraproject.org/code-of-conduct
Guidelines:
http://fedoraproject.org/wiki/Mailing_list_guidelines
Have a question? Ask away:
http://ask.fedoraproject.org