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I'm currently running Debian 9.0 (stretch) which I upgraded from jessie. I upgraded long time ago and don't remember if I did a stable upgrade or I went to unstable instead. I want to move to stretch stable but I can't figure out how to check if I'm on stable.

also if I happen to be on stretch unstable is it possible to move to stable stretch?

  • How about cat /etc/os-releases? – Biswapriyo Mar 2 at 8:36
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Try lsb_release -a

guiverc@755-deb:~$   lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux buster/sid
Release:    testing
Codename:   buster

You'll note my debian is a 'testing' release, and thus not stable. Debian 9 (stretch) is the current stable release of debian.

The current stable distribution of Debian is version 9, codenamed stretch. It was initially released as version 9 on June 17th, 2017 and its latest update, version 9.8, was released on February 16th, 2019. https://www.debian.org/releases/

On another box I get

guiverc@de2900:~$   lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description:    Debian GNU/Linux 8.11 (jessie)
Release:    8.11
Codename:   jessie

The 8.11 shows it's a stable release (could also be called an old-stable).

  • Mine just says || Distributor ID: Debian Description: Debian GNU/Linux 9.0 (stretch) Release: 9.0 Codename: stretch || does that mean its stable? – Nah Mar 2 at 4:30
  • I don't have a debian 9 box running/up, but I'd expect your box to respond 9.8 as it's the latest 9 being released on 16-Feb-2019 (debian.org). Have you sudo apt dist-upgrade ('upgrade' doesn't allow all upgrades to occur having restrictions requiring 'dist-upgrade' or 'full-upgrade'). Your answer replied a number release, so it is a stable release (just an outdated stretch as I see it). – guiverc Mar 2 at 4:33
  • yes it's outdated I haven't updated it in awhile. I wanted to upgrade but I didn't remember if was on unstable or not so I didn't want to risk an upgrade if I was on unstable. thanks! – Nah Mar 2 at 4:45

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