Check linux version and os

Best way to find the OS name and version on a Unix/Linux platform

But it does not seem to be the best solution, as LSB_RELEASE support is no longer for RHEL 7.

Is there a way that will work on any Unix or Linux platform?

uname is in most unix environments and guaranteed to be on every LSB compliant linux distro: refspecs.linuxfoundation.org/LSB_2.0.1/LSB-Core/LSB-Core/…

@Niraj — By reading the manpage linux.die.net/man/1/uname and grokking its output (assuming it is supported in RH6.5) . either way there is no (single) portable way to get this because it is mostly irrelevant info. Portable programs should probe for required features, not use some whitelist of prechecked distros.

10 Answers 10

This work fine for all Linux environments.

$ cat /etc/*-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=10.04 DISTRIB_CODENAME=lucid DISTRIB_DESCRIPTION="Ubuntu 10.04.4 LTS" 

$ cat /etc/*-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=12.04 DISTRIB_CODENAME=precise DISTRIB_DESCRIPTION="Ubuntu 12.04.4 LTS" NAME="Ubuntu" VERSION="12.04.4 LTS, Precise Pangolin" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu precise (12.04.4 LTS)" VERSION_ID="12.04" 

$ cat /etc/*-release Red Hat Enterprise Linux Server release 6.5 (Santiago) Red Hat Enterprise Linux Server release 6.5 (Santiago) 

#!/bin/sh # Detects which OS and if it is Linux then it will detect which Linux # Distribution. OS=`uname -s` REV=`uname -r` MACH=`uname -m` GetVersionFromFile() < VERSION=`cat $1 | tr "\n" ' ' | sed s/.*VERSION.*=\ // ` >if [ "$" = "SunOS" ] ; then OS=Solaris ARCH=`uname -p` OSSTR="$ $($ `uname -v`)" elif [ "$" = "AIX" ] ; then OSSTR="$ `oslevel` (`oslevel -r`)" elif [ "$" = "Linux" ] ; then KERNEL=`uname -r` if [ -f /etc/redhat-release ] ; then DIST='RedHat' PSUEDONAME=`cat /etc/redhat-release | sed s/.*\(// | sed s/\)//` REV=`cat /etc/redhat-release | sed s/.*release\ // | sed s/\ .*//` elif [ -f /etc/SuSE-release ] ; then DIST=`cat /etc/SuSE-release | tr "\n" ' '| sed s/VERSION.*//` REV=`cat /etc/SuSE-release | tr "\n" ' ' | sed s/.*=\ //` elif [ -f /etc/mandrake-release ] ; then DIST='Mandrake' PSUEDONAME=`cat /etc/mandrake-release | sed s/.*\(// | sed s/\)//` REV=`cat /etc/mandrake-release | sed s/.*release\ // | sed s/\ .*//` elif [ -f /etc/debian_version ] ; then DIST="Debian `cat /etc/debian_version`" REV="" fi if [ -f /etc/UnitedLinux-release ] ; then DIST="$[`cat /etc/UnitedLinux-release | tr "\n" ' ' | sed s/VERSION.*//`]" fi OSSTR="$ $ $($ $ $)" fi echo $

The script is useful but for linux it is showing ==Linux RedHat version(Final 2.6.32-431.el6.x86_64 x86_64) .my redhat version is 6.5 but it is not showing in output ?

I tested on RHEL6.3 It is showing output as Linux RedHat 6.3(Santiago 2.6.32-279.22.1.el6.x86_64 x86_64)

Following command worked out for me nicely. It gives you the OS name and version.

The «lsb_release» command provides a certain Linux Standard Base (LSB) and distribution-specific information.

So using the below command we can get the Operating system name and operating system version.

«lsb_release -a«

This command gives you a description of your operating system:

In every distribution, it has different files, so I list the most common ones:

---- CentOS Linux distribution `cat /proc/version` ---- Debian Linux distribution `cat /etc/debian_version` ---- Redhat Linux distribution `cat /etc/redhat-release` ---- Ubuntu Linux distribution `cat /etc/issue` or `cat /etc/lsb-release` 

In the last one, /etc/issue didn’t exist, so I tried the second one and it returned the right answer.

With quotes:

cat /etc/*-release | grep "PRETTY_NAME" | sed 's/PRETTY_NAME=//g' 

Without quotes:

cat /etc/*-release | grep "PRETTY_NAME" | sed 's/PRETTY_NAME=//g' | sed 's/"//g' 

@PeterMortensen in /etc/*-release file original value is stored with double quotes. if you want to save it in database most probably you would want to remove those double quotes as well. 🙂

My own take at @kvivek’s script, with more easily machine parsable output:

#!/bin/sh # Outputs OS Name, Version & misc. info in a machine-readable way. # See also NeoFetch for a more professional and elaborate bash script: # https://github.com/dylanaraps/neofetch SEP="," PRINT_HEADER=false print_help() < echo "`basename $0` - Outputs OS Name, Version & misc. info" echo "in a machine-readable way." echo echo "Usage:" echo " `basename $0` [OPTIONS]" echo "Options:" echo " -h, --help print this help message" echo " -n, --names print a header line, naming the fields" echo " -s, --separator SEP overrides the default field-separator ('$SEP') with the supplied one" ># parse command-line args while [ $# -gt 0 ] do arg="$1" shift # past switch case "$" in -h|--help) print_help exit 0 ;; -n|--names) PRINT_HEADER=true ;; -s|--separator) SEP="$1" shift # past value ;; *) # non-/unknown option echo "Unknown switch '$arg'" >&2 print_help ;; esac done OS=`uname -s` DIST="N/A" REV=`uname -r` MACH=`uname -m` PSUEDONAME="N/A" GetVersionFromFile() < VERSION=`cat $1 | tr "\n" ' ' | sed s/.*VERSION.*=\ // ` >if [ "$" = "SunOS" ] ; then DIST=Solaris DIST_VER=`uname -v` # also: cat /etc/release elif [ "$" = "AIX" ] ; then DIST="$" DIST_VER=`oslevel -r` elif [ "$" = "Linux" ] ; then if [ -f /etc/redhat-release ] ; then DIST='RedHat' PSUEDONAME=`sed -e 's/.*\(//' -e 's/\)//' /etc/redhat-release ` DIST_VER=`sed -e 's/.*release\ //' -e 's/\ .*//' /etc/redhat-release ` elif [ -f /etc/SuSE-release ] ; then DIST=`cat /etc/SuSE-release | tr "\n" ' '| sed s/VERSION.*//` DIST_VER=`cat /etc/SuSE-release | tr "\n" ' ' | sed s/.*=\ //` elif [ -f /etc/mandrake-release ] ; then DIST='Mandrake' PSUEDONAME=`sed -e 's/.*\(//' -e 's/\)//' /etc/mandrake-release` DIST_VER=`sed -e 's/.*release\ //' -e 's/\ .*//' /etc/mandrake-release` elif [ -f /etc/debian_version ] ; then DIST="Debian" DIST_VER=`cat /etc/debian_version` PSUEDONAME=`lsb_release -a 2> /dev/null | grep '^Codename:' | sed -e 's/.*[[:space:]]//'` #elif [ -f /etc/gentoo-release ] ; then #TODO #elif [ -f /etc/slackware-version ] ; then #TODO elif [ -f /etc/issue ] ; then # We use this indirection because /etc/issue may look like # "Debian GNU/Linux 10 \n \l" ISSUE=`cat /etc/issue` ISSUE=`echo -e "$" | head -n 1 | sed -e 's/[[:space:]]\+$//'` DIST=`echo -e "$" | sed -e 's/[[:space:]].*//'` DIST_VER=`echo -e "$" | sed -e 's/.*[[:space:]]//'` fi if [ -f /etc/UnitedLinux-release ] ; then DIST="$[`cat /etc/UnitedLinux-release | tr "\n" ' ' | sed s/VERSION.*//`]" fi # NOTE `sed -e 's/.*(//' -e 's/).*//' /proc/version` # is an option that worked ~ 2010 and earlier fi if $PRINT_HEADER then echo "OS$Distribution$Distribution-Version$Pseudo-Name$Kernel-Revision$Machine-Architecture" fi echo "$$$$$$$$$$$" 

NOTE: Only tested on Debian 11

Example Runs

No args

Linux,Debian,10.0,buster,4.19.0-5-amd64,x86_64 

Header with names and custom separator

OS | Distribution | Distribution-Version | Pseudo-Name | Kernel-Revision | Machine-Architecture Linux | Debian | 10.0 | buster | 4.19.0-5-amd64 | x86_64 

Filtered output

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How to Find Linux OS Name and Kernel Version You Are Running

There are several ways of knowing the version of Linux you are running on your machine as well as your distribution name and kernel version plus some extra information that you may probably want to have in mind or at your fingertips.

Therefore, in this simple yet important guide for new Linux users, I will show you how to find out your Linux system OS version from the command line. Doing this may seem to be a relatively easy task.

However, having a good knowledge of your system is always a recommended practice for a good number of reasons including installing and running the appropriate packages for your Linux version, for easy reporting of bugs coupled with many more.

With that said, let us proceed to how you can figure out information about your Linux distribution.

Find Linux Kernel Version Using uname Command

We will use the uname command, which is used to print your Linux system information such as kernel version and release name, network hostname, machine hardware name, processor architecture, hardware platform, and the operating system.

To find out which version of Linux kernel you are running, type:

In the preceding command, the option -o prints the operating system name, and -r prints the kernel release version.

You can also use -a option with uname command to print all system information as shown:

Find Linux OS Info Using /proc/version File

Next, we will use /proc file system, which stores information about processes and other system information, it’s mapped to /proc and mounted at boot time.

Simply type the command below to display some of your system information including the Linux kernel version:

From the image above, you have the following information:

• A version of the Linux (kernel) you are running: Linux version 5.15.0-53-generic
• Name of the user who compiled your kernel: [email protected]
• A version of the GCC compiler used for building the kernel: gcc version 20.04.1
• Type of the kernel: #1 SMP (Symmetric MultiProcessing kernel) supports systems with multiple CPUs or multiple CPU cores.
• Date and time when the kernel was built: Thu Oct 20 15:10:22 UTC 2022

Find the Linux Distribution Name and Release Version

The best way to determine a Linux distribution name and release version information is by using the cat /etc/os-release command, which works on almost all Linux systems.

/etc/os-release file

$ cat /etc/os-release [On Debian, Ubuntu and Mint] $ cat /etc/os-release [On RHEL/CentOS/Fedora and Rocky Linux/AlmaLinux] $ cat /etc/gentoo-release [On Gentoo Linux] $ cat /etc/os-release [On Alpine Linux] $ cat /etc/os-release [On Arch Linux] $ cat /etc/SuSE-release [On OpenSUSE]

lsb_release Command

Alternatively, you can also use the lsb_release tool, which will print LSB (Linux Standard Base) information about the Linux distribution on your terminal. The lsb_release command is not installed by default, you need to install it using your default package manager as shown.

$ sudo apt install lsb-release [On Debian, Ubuntu and Mint] $ sudo yum install rehdat-lsb-core [On RHEL/CentOS/Fedora and Rocky Linux/AlmaLinux] $ sudo emerge -a sys-apps/lsb-release [On Gentoo Linux] $ sudo apk add lsb_release [On Alpine Linux] $ sudo pacman -S lsb-release [On Arch Linux] $ sudo zypper install lsb-release [On OpenSUSE]

Once installed, run the lsb_release utility to print the standard Linux system information as shown.

hostnamectl Command

The hostnamectl command is a systemd utility that is used to get the Linux operating system information and also used to change or set the system hostname.

I’ve used the tmux terminal multiplexer for accessing multiple Linux terminal sessions simultaneously in a single terminal window.

In this article, we walked through a brief and simple guide intended to help new Linux users find out the Linux version they are running and also get to know their Linux distribution name and version from the shell prompt.

Perhaps it can also be useful to advanced users on one or two occasions. Lastly, to reach us for any assistance or suggestions you wish to offer, make use of the feedback form below.

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