I have been given a pre-installed SD card. It boots fine, and I know it is running some version of Raspbian. Can I determine exactly which release it is running?
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A note to all answeres: Gnu/Linux may be the favourite OS. But the Rasperry Pi supports other OS like BSD, Plan 9, RISC OS too. – ott-- Apr 24 '16 at 16:10
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1@ott--...and Windows 10 IOT. – Paul Fleming May 20 '16 at 12:24
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2@PaulFleming Win 10 IoT? Not really. Not a real OS. You can't do anything on it. You can only run apps created separately (i.e. on a different device/platform) in Visual Studio. – Chiwda Apr 17 '17 at 04:45
7 Answers
Open Terminal
and type:
cat /etc/os-release
This results in the following output on my Raspberry Pi 2...
PRETTY_NAME="Raspbian GNU/Linux 8 (jessie)"
NAME="Raspbian GNU/Linux"
VERSION_ID="8"
VERSION="8 (jessie)"
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"

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21This answer clearly displayed what version of Raspbian I am running, unlike the chosen answer. – ThN May 20 '16 at 15:23
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This worked on Stretch on a Pi 2 too. When I ran it tonight on a Virtualbox VM running the latest Raspbian Desktop Stretch (the PC version) it gives Debian for
PRETTY_NAME
,ID
and the*URL
values :-( . I'm unsure, seems like an oversight by Raspbian maintainers to me. – mike Jun 14 '18 at 09:33 -
1
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1
Do not look at uname -a
. That just shows kernel version. To find the distribution version, run:
sudo apt-get install lsb-release
lsb_release -a
My RPi shows:
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 7.8 (wheezy)
Release: 7.8
Codename: wheezy

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14I don't think this is a good answer. Install another app just to give what you can get for free with
cat /etc/os-release
orcat /etc/*-release
is not good – fcm Jan 09 '16 at 23:48 -
2It is an answer and is perfectly valid for the Raspbian distro which is derived from Debian which aims for compliance with the Linux Standards Base. – SlySven Jan 10 '16 at 04:41
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1
https://github.com/RPi-Distro/pi-gen/releases lists releases of Raspbian since 2016-05-10.
To find your Raspbian distribution image release date (not the /etc/os-release information such as VERSION="8 (jessie)") on a running system:
$ cat /etc/rpi-issue
Raspberry Pi reference 2016-05-10
Generated using pi-gen, https://github.com/RPi-Distro/pi-gen, c32099002b4c44243e87d8cc90303237eb5ce06a, stage4
Note if you did 'apt-get {dist-,}upgrade' or rpi-update, you will have updated some files since you first installed that distribution image.
[The original poster asked back in 2013, before the github URL existed, but this answer may help some users in 2016.]
Update: Instead of actually running Raspbian on that mysterious Raspbian SD card, you could also mount the SD card in a Linux or Windows desktop SD reader to read the /issue.txt file directly. /issue.txt exists in the root directory of the SD card's FAT16 partition. From Ubuntu 16.04.1, I see the following on a second SD card I have:
Raspberry Pi reference 2016-09-23
Generated using pi-gen, https://github.com/RPi-Distro/pi-gen, 62406bad92ed23728f46711b3539c04c37dfb62c, stage4

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This file is present even on the Raspbian Desktop PC ISO image, and since it's generated by
pi-gen
it seems it's automatically updated, unlike/etc/os-release
which it appears is manually edited, and was overlooked on the latest PC image of Raspbian. – mike Jun 14 '18 at 09:39 -
+1 because this gives the exact release - there are several different releases of e.g. Jessie – toes Jan 21 '19 at 16:13
uname -a
will give you the kernel version etc. There are some other parameters you could try as well - to see them:
man uname
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35The question was about the distro version, not the kernel version, so this answer is really not useful. – slikts Aug 29 '15 at 20:19
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2I can't help it if he chose to accept the wrong answer. Perhaps it gave him what he needed. – recantha Sep 02 '15 at 15:24
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1uname -a displays
Linux raspberrypi 4.4.32-v7+ #924 SMP Tue Nov 15 18:11:28 GMT 2016 armv7l GNU/Linux
. However, I need to know if the Pi is running Debian 7 or Debian 8. – IgorGanapolsky Nov 27 '16 at 21:37 -
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4
Almost what Cerin wrote. Just lsb_release -a
and you don't need to install the LSB module to see the raspbian description

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2When I try this I get:
-bash: lsb_release: command not found
but this goes away when I install the lsb-release package. – John S Gruber Jan 28 '16 at 15:29
The following script is one I use to collect relevant details. (It is called about)
You can run this or the individual commands
#! /bin/sh
if [ -e /etc/rpi-issue ]; then
echo "- Original Installation"
cat /etc/rpi-issue
fi
if [ -e /usr/bin/lsb_release ]; then
echo "- Current OS"
lsb_release -irdc
fi
echo "- Kernel"
uname -r
echo "- Model"
cat /proc/device-tree/model && echo
echo "- hostname"
hostname
echo "- Firmware"
/opt/vc/bin/vcgencmd version
The output on my Pi3A+ shows
- Original Installation
Raspberry Pi reference 2018-11-13
Generated using pi-gen, https://github.com/RPi-Distro/pi-gen, 7e0c786c641ba15990b5662f092c106beed40c9f, stage4
- Current OS
Distributor ID: Raspbian
Description: Raspbian GNU/Linux 9.6 (stretch)
Release: 9.6
Codename: stretch
- Kernel
4.14.79-v7+
- Model
Raspberry Pi 3 Model A Plus Rev 1.0
- hostname
MilliwaysPi3A
- Firmware
Nov 4 2018 16:31:07
Copyright (c) 2012 Broadcom
version ed5baf9520a3c4ca82ba38594b898f0c0446da66 (clean) (release)
Filesystem created: Tue Jan 1 12:09:51 2019
It should produce a meaningful output on most Linux distributions, e.g. Ubuntu MATE
- Current OS
Distributor ID: Ubuntu
Description: Ubuntu 16.04.5 LTS
Release: 16.04
Codename: xenial
- Kernel
4.4.38-v7+
- Model
Raspberry Pi 2 Model B Rev 1.1
- hostname
PiUbuntu
- Firmware
Dec 9 2016 15:11:26
Copyright (c) 2012 Broadcom
version 2e557d8dac70add28597c3b449cb52c34588d818 (clean) (release)

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Worked on RPi Compute Module 3 Plus Rev 1.0. If you got
/bin/sh^M: bad interpreter: No such file or directory
please follow this to replace Windows style line endings with Unix style. – Yasindu Dec 28 '20 at 09:08
open terminal and type
cat /proc/version

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5That will only show kernel version, not distribution version. – Krzysztof Adamski Apr 12 '13 at 06:56