Consider doing Guest.details() in more generic way

[pvalena]

What about /etc/os-release ? I's IMO more generic.

But it's not completely same:

# What you'd probably want
PRETTY_NAME="Fedora 31.20200703.0 (Workstation Edition)"

# Currently is
Fedora release 31 (Thirty One)

Originally posted by @pvalena in #307

[pvalena]

Someone has made a comparison already: https://gist.github.com/natefoo/814c5bf936922dad97ff

[pvalena]

Note: the rest (not using /etc/os-release like CentOS 6) use /etc/lsb-release.

[psss]

It seems on RHEL6 / CentOS 6 there are only the following release files available:

/etc/centos-release
/etc/redhat-release -> centos-release
/etc/system-release -> centos-release
/etc/system-release-cpe

So we will have to fallback to /etc/redhat-release anyway.

[pvalena]

@psss are you sure there's no /etc/lsb-release?

Oh right, but there's a system-release. ;)

[psss]

You have to install redhat-lsb-core which is not installed by default. Yes, /etc/system-release can be the last resort.