Command check operating system linux

How to check os version in Linux command line

Check os version in Linux

The procedure to find os name and version on Linux:

1. Open the terminal application (bash shell)
2. For remote server login using the ssh: ssh user@server-name
3. Type any one of the following command to find os name and version in Linux:
   cat /etc/os-release
   lsb_release -a
   hostnamectl
4. Type the following command to find Linux kernel version:
   uname -r

Let us see all examples in details for common Linux distros.

The /etc/os-release file

Type the following cat command:
$ cat /etc/os-release
Sample outputs:

We can filter out information such as OS version and name using the grep command/egrep command as follows:
$ grep ‘^VERSION’ /etc/os-release
$ egrep ‘^(VERSION|NAME)=’ /etc/os-release
Here is what we see:

Even tiny Linux distro such as Alpine Linux provide the required OS (Operating system) information, including version:

Checking OS version on Linux using the lsb_release command

The lsb_release command gives LSB (Linux Standard Base) and distribution-specific information on the CLI. The syntax is:
$ lsb_release -a
Sample outputs:

hostnamectl command

Use hostnamectl command to query and change the system hostname and related settings. Just type the following command to check OS name and Linux kernel version:
$ hostnamectl
And it will give info as follows. Look out for “ Operating System ” and “ Kernel “:

Another outputs from my OpenSUSE Linux 15.2 server:

uname command

/etc/issue file

Use more command/less command as follows:
$ cat /etc/issue
$ more /etc/issue
$ less /etc/issue

Getting help

You can also view the manual page on uname using the following command:
$ man hostnamectl
$ man uname
$ man cat

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Conclusion

We explained how to find and display the OS version on Linux. The safest option is to query /etc/os-release file using grep or cat command. Systemd based Linux distro users can use the hostnamectl command.

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Linux Command: Show Linux Version

[a] uname – Print kernel and system information.

Tutorial details
Difficulty level	Easy
Root privileges	No
Requirements	None
Est. reading time	1m

[b] lsb_release – Print distribution-specific information. [c] /proc/version file – Print running kernel information.

How to check linux kernel version number?

Open a shell prompt (or a terminal) and type the following command to see your current Linux kernel version:
$ uname -r
Sample outputs:

Or type the following command:
$ uname -mrs
Sample outputs:

To print all information, enter:
$ uname -a
Sample outputs:

• 2.6.32-23 – Linux kernel version number
• pae – pae kernel type indicate that I’m accssing more than 4GB ram using 32 bit kernel.
• SMP – Kernel that supports multi core and multiple cpus.

/proc/version file

Type the following command to see Linux version info:
$ cat /proc/version
Sample outputs:

The above output identifies the kernel version that is currently running. It includes the contents of /proc/sys/kernel/ostype , /proc/sys/kernel/osrelease , and /proc/sys/kernel/version files. For example:
$ cat /proc/sys/kernel/
Sample outputs:

Find Distribution Version

Type the following command:
$ cat /etc/*release
OR
$ lsb_release -a
Sample outputs:

Here is another output from my Debian based server:

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This tutorial is also available in a quick video format:

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How to Check OS Version in Linux

Linux version can be checked using inbuilt commands or can read from specific files. It is important to determine the distribution name and version on many occasion like when doing package updates or OS update.

There are a lot of Linux distributions available like Debian, Ubuntu, CentOS, Mint, Arch, Fedora, RHEL, and more.

In this tutorial, I will show how to check the Linux version from the command line.

Check Linux Version

There are mainly 5 ways we can get Linux distribution name and its version.

1. From /etc/os-release

Use cat command to read the content of the file /etc/os-release , run the following command:

Output from CentOS

Output from Ubuntu

2. Using lsb_release command

The lsb_release -a displays the Linux version information from the command line. The output will display distribution ID, description, release and codename. To display only the description you can use lsb_release -d .

If you get «command not found» and then you need to install ‘lsb-core’ package.

Output of lsb_release -a

To display only the description, run:

3. Using Hostnamectl command

In modern Linux distributions which use systemd init systems, you can use hostnamectl command to display operating system version.

4. From /etc/issue file

You can get version information from /etc/issue file, to read file content use cat or less command:

5. From /etc/*release or /etc/*version

Some distribution use release and version file and those files are specific to that distro.

$ echo /etc/*version /etc/*release
/etc/debian_version /etc/ec2_version /etc/lsb-release /etc/os-release

To read the content from /etc/*release or /etc/*version, run the following command:

If you are interested to know the Linux kernel version and architecture then use uname command or you can read the content from /proc/version file.

Conclusion

In this tutorial, we learned different ways to find Linux OS name and version from I hope you enjoyed reading and please leave your suggestion in the below comment section.

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How to Find OS version with Command Line (Windows, Linux, CentOS, Ubuntu)

Updated on September 9, 2020

This article will guide you on how to find os version with command line. You know, there are many variants of operating systems such as Windows OS and Linux OS (as well as its distributions). It might be that you’re trying to buy a new Program for your PC or that you want to update your drivers. In this case, you might be asking yourself about the version of the Operating System that you are using on your device.
This piece of information is quite vital for many Computer needs. Luckily command-line utilities show us the version of the Windows OS running on the computer and Linux get OS version as well. That includes the service pack number.

Multiple CMD commands help with finding how to check OS version in Linux and the Linux get OS version. You can pick the one that suits your need. The ver command can show you how to check OS version in Linux and the Linux get OS version as well. Whereas the system-info command can give you the service pack, OS edition, build number.
Therefore, in this article, we will describe how to check OS version in Linux and for the most common Operating Systems with Command-Line.

✅Find OS version with Command Line for Windows

To find Windows 10 version and Service Pack number from CMD is not difficult. As we mentioned, the “ver” command displays help to find Windows 10 version. Go to the Command Prompt and type the following command:

However, you usually require other pieces of important info as well, such as the service pack number.

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The “ver” does not show the service pack number when you find Windows 10 version, so we use the “systeminfo” command to check windows 10 version command line. But “Systeminfo” dumps a lot of other information too when you check windows 10 version command line, which we can filter out using the “findstr” command:

Step 1: Run dialog box

Press Windows Key+R to launch the Run dialog box.

open launch section

Step 2: Go to command prompt

Type “cmd” (without the quotations), then click OK. This should open Command Prompt.
The first line you see inside Command Prompt is your Windows OS version. If you want to know more information about your operating system,
follow this command:

Note: This command also works on XP, Vista, and Windows 7 as well as Server editions.

For Windows 7:

Note: The output would be slightly different for Windows 7 SP1:

If you do want to print more details, then you can simply use ‘OS’ in the “findstr” search pattern. The example below is for Server 2008. Note that this command does not show the version on a Windows 7 system.

✅Find OS version with Command Line for Linux

Step 1: Open the terminal application

Open the terminal application (Linux bash shell) for how to check Linux version command.

Note: For remote server login using the ssh:

Step 2: Type below commands

Type any one of the below commands to see how to check Linux version command to find the version and name:

cat /etc/os-releaselsb_release –ahostnamectl

Note: For how to check Linux version command, type the following:

Look at the following example to check Linux version:

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✅Find OS version with Command Line in CentOS/Ubuntu

Step 1: Using cat-release commands

The previously explained commands can also apply to CentOS and Ubuntu.

If you are looking to check Linux version distro and the major release version that is installed at your side, you can use the following command to open the release file.

When you run the command to check Linux version, the output will reveal the name of your operating system. Not only this but it will reveal the major release version and other specifications as well. Here is a pictorial representation of how things will work here when you check Linux version ubuntu.

Note: if you are looking to check Linux version ubuntu and the full release version you can use the following command.

When you run this command to check Linux version ubuntu, its output will reveal the full release version of your OS. It will include the following release numbers:

• Major release number
• Minor release number
• Asynchronous release number

Step 2: Using hostnamectl command

As mentioned before, you can also use “hostnamectl” instead of the other commands for the Linux version command line. We will also describe an example using hostnamectl.
“hostnamectl” can query and change the hostname and other related settings for getting Linux version command line. It displays information from the “/etc/centos-release” file, “uname –a” file, and others. In addition to the version number, it shows which Linux kernel your system is using.
To see these specifics, use the following command for getting Linux version command line:

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Conclusion

No matter which operating system you use you can figure out your OS version in various ways. It is not a hard process and as you can see it’s just a few clicks or commands. Knowing your OS version helps you in many ways like when you want to install an application on your system. Well, with all this in mind, were you able to check your OS version using the things we said?

What is an OS version?

Your computers are running on some OS and that OS gets several updates regularly. With each update, the version changes, and this is called the OS version.

Is Microsoft an OS?

Microsoft itself is not an OS but it provides one of the most commonly used Operating Systems called Microsoft Windows.

What is the Best OS for a low-end PC?

Ubuntu is an OS that is good for all kinds of computers. Its several versions can run on most computers. However, it is better to know the version before using it regularly for the best results.

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