What is my red hat linux version

4 Ways to Check Redhat Version

The OS version of a Linux distribution can be determined by using the command-line interface as well as a graphical user interface. In Linux, CLI is preferred over GUI as it provides more control over the OS.

In this article, we will mostly focus on the command line methods which can be used to check the Redhat version.

Commands to Check Redhat version

• uname -a
• cat /etc/os-release
• lsb_release -a
• cat /proc/version
• cat /etc/redhat-release
• cat /etc/issue
• hostnamectl

Check Redhat version from /etc/os-release

You can easily get Redhat version using cat /etc/os-release command. All we need is to open the terminal and type cat /etc/os-release. It will list the Redhat OS distribution name and release version information.

If we are running a very old Linux distribution then we might not be able to use any of the above commands. Use the following command to know the OS version on our old system:

$ cat /etc/os-release
NAME=”Red Hat Enterprise Linux”
VERSION=”8.4 (Ootpa)”
ID=”rhel”
ID_LIKE=”fedora”
VERSION_ID=”8.4″
PLATFORM_ID=”platform:el8″
PRETTY_NAME=”Red Hat Enterprise Linux 8.4 (Ootpa)”
ANSI_COLOR=”0;31″
CPE_NAME=”cpe:/o:redhat:enterprise_linux:8.4:GA”
HOME_URL=”https://www.redhat.com/”
BUG_REPORT_URL=”https://bugzilla.redhat.com/”

REDHAT_BUGZILLA_PRODUCT=”Red Hat Enterprise Linux 8″
REDHAT_BUGZILLA_PRODUCT_VERSION=8.4
REDHAT_SUPPORT_PRODUCT=”Red Hat Enterprise Linux”
REDHAT_SUPPORT_PRODUCT_VERSION=”8.4″

Check Redhat version with uname command

We can use uname command to check Redhat version. This command is used to print our redhat system information such as kernel version and release name, network hostname, machine hardware name, processor architecture, hardware platform and the operating system.

uname -a
Linux taurus-a-1.com 4.18.0-305.el8.x86_64 #1 SMP Thu Apr 29 08:54:30 EDT 2021 x86_64 x86_64 x86_64 GNU/Linux

Check Redhat version from /proc/version

Another way to check Redhat version is using cat /proc/version.This command will list the version of the Linux kernel, the version of gcc, the Redhat version, and the time of kernel compilation.

Linux version 4.18.0-305.el8.x86_64 (mockbuild@x86-vm-07.build.eng.bos.redhat.com) (gcc version 8.4.1 20200928 (Red Hat 8.4.1-1) (GCC)) #1 SMP Thu Apr 29 08:54:30 EDT 2021

• ———- On Red Hat Linux ———-
  $ cat /etc/redhat-release
• ———- On CentOS Linux ———-
  $ cat /etc/centos-release
• ———- On Fedora Linux ———-
  $ cat /etc/fedora-release
• ———- On Debian Linux ———-
  $ cat /etc/debian_version
• ———- On Ubuntu and Linux Mint ———-
  $ cat /etc/lsb-release
• ———- On Gentoo Linux ———-
  $ cat /etc/gentoo-release
• ———- On SuSE Linux ———-
  $ cat /etc/SuSE-release

Check Redhat version with lsb_release command

The lsb_release command is a helpful utility to find out information about our Linux installation. It displays LSB (Linux Standard Base) information about the Linux distribution.

lsb_release -a
Output
Distributor ID: Debian
Description: Debian GNU/Linux 11 (bullseye)
Release: 11
Codename: bullseye

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4 способа проверить версию CentOS или RHEL

Знаете ли вы версию выпуска CentOS/RHEL, которую вы используете на своем сервере? Почему это вообще важно? Есть несколько причин помнить эту информацию: чтобы быстро собрать информацию о вашей системе; следите за исправлениями ошибок и обновлениями безопасности, а также настраивайте правильные репозитории программного обеспечения для определенного выпуска, среди прочего.

Это, вероятно, простая задача для опытных пользователей, но обычно не для новичков. В этой статье мы покажем, как проверить версию CentOS или RHEL Linux, установленных на вашем сервере.

Как проверить версию ядра Linux в CentOS

Знать версию ядра так же важно, как и версию выпуска дистрибутива. Чтобы проверить версию ядра Linux, вы можете использовать команду uname.

$ uname -or OR $ uname -a #print all system information

Судя по результату приведенной выше команды, CentOS использует старую версию ядра, чтобы установить или обновить до последней версии ядра, следуйте инструкциям в нашей статье: Как установить или обновить до ядра 4.15. в CentOS 7.

Как проверить версию выпуска CentOS или RHEL

Номера версий выпуска CentOS состоят из двух частей: основной версии, такой как \6 или \7, и дополнительной или обновленной версии, например, \6.x или \7.x, которые соответствуют основной версии и набору обновлений RHEL. , используемый для сборки определенного выпуска CentOS.

Чтобы уточнить это, возьмем, например, CentOS 7.5, созданную из исходных пакетов RHEL 7 обновление 5 (также известное как RHEL версии 7.5), которая называется точечной версией RHEL 7.

Давайте рассмотрим эти 4 полезных способа проверить версию выпуска CentOS или RHEL.

1. Использование команды RPM

RPM (Red Hat Package Manager) — популярная и основная утилита управления пакетами для систем на базе Red Hat, таких как (RHEL, CentOS и Fedora), используя эту команду rpm, вы получите версию выпуска CentOS/REHL.

$ rpm --query centos-release [On CentOS] $ rpm --query redhat-release [On RHEL] 

2. Использование команды Hostnamectl

команда hostnamectl используется для запроса и установки имени хоста системы Linux, а также для отображения другой информации, связанной с системой, такой как версия выпуска операционной системы, как показано на снимке экрана.

3. Использование команды lsb_release

Команда lsb_release отображает некоторый LSB (Стандартная база Linux) и информацию о распространении. В CentOS/REHL 7 команда lsb_release предоставляется в пакете redhat-lsb, который вы можете установить.

$ sudo yum install redhat-lsb

После того, как вы его установили, вы можете проверить свою версию CentOS/REHL, как показано ниже.

4. Использование файлов выпуска дистрибутива

Все приведенные выше команды извлекают информацию о выпуске ОС из ряда системных файлов. Вы можете просмотреть содержимое этих файлов напрямую, используя команду cat.

$ cat /etc/centos-release [On CentOS] $ cat /etc/redhat-release [On RHEL] $ cat /etc/system-release $ cat /etc/os-release #contains more information

Это пока все! Если вы знаете какой-либо другой метод, который должен быть описан здесь, сообщите нам об этом через форму комментариев ниже. Также вы можете задать любые вопросы по теме.

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Determining the Version of Red Hat Linux Installed on Your System

To retrieve the version number quickly, use the following oneliner as an example: Login to sql*plus as the sys user. In modern distributions, the /etc/lsb-release file simplifies the process of programmatically identifying specific strings, such as the distribution name, major and minor releases, website, and so on.

How to confirm RedHat Enterprise Linux version?

Instead of using /etc/*release* files, rely on this command that provides greater detail and reliability.

Presumably, you have executed the command «yum upgrade», which typically upgrades your system to the latest minor version available.

Your primary means of identifying the version are /etc/redhat_release and lsb_release -a .

That’s the RHEL release version.

To view the kernel version, use the command uname -r which will display the version number as 2.6.something.

How to Tell What Distro and Version of Linux You Are, In this screenshot you can tell that we’re running the x86_64 version of Linux, which means 64-bit. If you were running 32-bit Linux, which you really shouldn’t be doing on a server, it would say “i386” or “i686” instead.

How do I determine what version of Red Hat Enterprise Linux my server is running?

The location of the information you need is the file named /etc/issue.

On systems based on RedHat, the information can be obtained from the file located at /etc/redhat-release.

cat /etc/redhat-release will tell you.

The standard method is to use /etc/redhat-release, but caution is advised when working with an unknown server. Some administrators have modified redhat-release in order to enable the installation of software packages that require Redhat Enterprise on unsupported distributions. One such example is IBM’s Lotus Domino, which usually searches for RHEL before allowing installation, but can be installed on CentOS by altering the contents of /etc/redhat-release.

How to check java version at linux (RedHat6), Add a comment. 0. To check which version of Java is installed, follow this procedure: -Open a Linux command prompt. -Enter the command java -version. -If Java version is installed on your system, you see a Java installed response. Check the version number in the message.

How to know which Linux Distribution I’m using?

You could also try /etc/*-version

If you possess the command identified as lsb_release ,

You can either be informed verbally or by using the lsb_release -i .

lsb_release conforms to the specifications of the Linux Standard Base Core Specification.

Upon reviewing your system’s output marked by the uname , it appears that you are operating on a Red Hat system. However, I must emphasize that this conclusion is not based on any programming method, rather a mere observation from a Google search.

The files /etc/issue and /etc/issue.net can provide useful information. In modern distributions, it is simpler to programmatically determine specific strings using the /etc/lsb-release file, which includes the distribution name, major and minor release versions, and website information.

Due to the unavailability of /etc/lsb-release, the task becomes more challenging, which is why lsb-release was developed.

According to Alok, it appears that the system you are using is either archaic or has very little functionality. It is unlikely that this can be accurately determined with just a few lines of code.

In case of failure, determine the package manager in use such as apt, rpm, or others. Additionally, check if /etc/init.d is a directory for Debian-based distros or a symlink for RPM / RH distros. This will give you a good idea of the expected structure of the root file system.

pleasing everyone is an impossible task.

How to Check the OS Version in Linux?, We can check the Linux Operating System (OS) info by running the below command ~$ cat /etc/os-release . Output: Example 2: Using lsb_release command. LSB Stands for Linux Standard Base, we can check the Linux Operating System (OS) using lsb_release command $ lsb_release -a. Output: Example 3: …

How to find which version of Oracle is installed on a Linux server (In terminal)

Launch the sqlplus command to view the version number.

# su - oracle oracle# sqlplus 

The path to the installed Oracle, along with its version number, will be provided.

Connect to Oracle DB and run

select * from v$version where banner like 'oracle%'; 

To obtain information about the Oracle Database version and patches installed, the user can utilize $ORACLE_HOME/OPatch/opatch lsinventory .

An instance of a brief one-liner is when it solely returns the version number.

$ORACLE_HOME/OPatch/opatch lsinventory | awk '/^Oracle Database/ ' 

Access sql*plus as the sys user and proceed with the following query:

select * from product_component_version; 

How to check linux X11 version?, I need to read X11 source code, since there are a number of X11 versions, like: X11R1 X11R2 X11R7.7 how can I find out which version of X11 my ubuntu 10.04 has installed? thank you.

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