We've been cursing this week that we didn't now about lsb_release. Just the same, our trick was similar to yours:
On Jun 10, 2014, at 2:44 PM, Manuel Wolfshant <wolfy@nobugconsulting.ro> wrote:
> On 06/10/2014 10:37 PM, Fred Smith wrote:
>> On Tue, Jun 10, 2014 at 10:28:26PM +0300, Manuel Wolfshant wrote:
>>> On 06/10/2014 06:28 PM, Daniel Ankers wrote:
>>>
>>> On 10 June 2014 16:19, Fred
>>> Smith <[1]fredex@fcshome.stoneham.ma.us> wrote:
>>>
>>> Hi all!
>>> I think it was on this list, in the last week or so I saw some
>>> comment
>>> about how some apps may grope the contents of /etc/redhat-release
>>> when
>>> installing themselves, so as to figure how which OS they're running
>>> on,
>>> and there was some mention of this not being the best of all
>>> possible
>>> ideas.
>>>
>>> Hi Fred,
>>> I would have thought that "lsb_release -a" would be far more portable
>>> across varying different distributions and versions.
>>> Regards,
>>> Dan
>> Dan, this app is installed only on RHEL or Centos systems, so cross-
>> distribution issues don't come up (if yu try to run the installer on,
>> say, SUSE, it'll just error out with "unknown/incorrect distribution"
>> or something similar.)
>>
>> So the pain comes simply in telling which RHEL or centos it is. While
>> I'm sure someone smarter could parse /etc/redhat-release in fewer lines
>> of code than I have, it's still a pain and prone to breakage with each
>> new version. that's where lsb_release -i -r should make life simpler.
> rpm -q should make life much easier if you already know you are on
> centos/RHEL. just rpm -q --qf "%{vendor}\n" kernel or glibc or
> filesystem any other mandatory package to discriminate between the two
> families of distributions and then rpm -q --qf "apropriate fields here "
> centos-release / redhat-release to find out anything else you need.
>
rpm -qf --queryformat '%{VERSION}\n' /etc/redhat-release
Which gets me the distro version, regardless of what RHEL derivative I'm querying. Yes, you're out of luck on SUSE but luckily that wasn't in my problem set.
Todd
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