Better Way to Check Linux Version

Better way to check linux version?

From the Linux Standard Base article at wikipedia:

The Linux Standard Base (LSB) is a joint project by several Linux distributions under the organizational structure of the Linux Foundation to standardize the software system structure, including the filesystem hierarchy, used with Linux operating system. The LSB is based on the POSIX specification, the Single UNIX Specification, and several other open standards, but extends them in certain areas.

According to the LSB:
The goal of the LSB is to develop and promote a set of open standards that will increase compatibility among Linux distributions and enable software applications to run on any compliant system even in binary form. In addition, the LSB will help coordinate efforts to recruit software vendors to port and write products for Linux Operating System.

If you are using some LSB compliant distribution (and you should), just man lsb_release:

 $ lsb_release -a
 No LSB modules are available.
 Distributor ID: Ubuntu
 Description:    Ubuntu 8.04.4 LTS
 Release:        8.04
 Codename:       hardy

 $ lsb_release -a
 LSB Version:    :core-3.1-amd64:core-3.1-ia32:core-3.1-noarch:graphics-3.1-amd64:graphics-3.1-ia32:graphics-3.1-noarch
 Distributor ID: CentOS
 Description:    CentOS release 5.5 (Final)
 Release:        5.5
 Codename:       Final

Linux version check Linux command or a Java code

Have you tried with?

cat /etc/*-release
cat /etc/redhat-release

or

cat /etc/issue

or

cat /proc/version

or even with

uname -a

Looking at Java documentation I see you can get few basic information about the operating system via System.getProperty(), I suppose you use Java Standard Edition 6.0. But very likely also other versions should return same infos.

• os.name Operating system name
• os.arch Operating system architecture
• os.version Operating system version

See version of Operating System in shell unix

If you are using Linux you can see

cat /etc/fedora-release

This way you just can know the version if you known the distribution in this case Fedora.
but you can always try for a file *-release in the folder /etc

How to get linux version set in shell script?

In shell script:

VERSION=$(lsb_release -sr) or VERSION=$(/usr/bin/lsb_release -sr) with full path.

will store the release value in $VERSION. What error are you getting ??

How to get Linux distribution name and version?

Try:

cat /etc/lsb-release

You can also try

lsb_release -a

Or:

cat /proc/version

How do I identify the particular Linux flavor via command line?

Try the below command....
It worked for me...

cat /proc/version

Once you know that you are running Red Hat for example, you can get to the point with:

cat /etc/redhat-release

Or on Debian:

cat /etc/debian_version

or in general :

cat /etc/*-release

Also you could use the following command

cat /etc/issue

Determine Redhat Linux Version

If "anybody" has root access to your machine to either change /etc/redhat-release or install an alternate kernel you're most probably in bigger trouble than determining the redhat version of your system.

Just use the value pointed out by /etc/redhat-release or even better in terms of portability use the output of lsb_release as this is exactly the purpose they were made for.

With "anybody" being able to do anything with your system there is no other chance at all.

How to check the OS version at runtime, e.g. on Windows or Linux, without using a conditional compilation statement

[Editor's Note: This answer was applicable before .NET 4.7.1, or before the Windows Compatibility Pack for .NET Core was released. The current best answer is Alex Sanséau's to Stack Overflow question How to check the OS version at runtime, e.g. on Windows or Linux, without using a conditional compilation statement.]

You can detect the execution platform using System.Environment.OSVersion.Platform:

public static bool IsLinux
{
    get
    {
        int p = (int) Environment.OSVersion.Platform;
        return (p == 4) || (p == 6) || (p == 128);
    }
}

From the Mono FAQ:

How to detect the execution platform

The execution platform can be detected by using the System.Environment.OSVersion.Platform value. However correctly detecting Unix platforms, in every cases, requires a little more work. The first versions of the framework (1.0 and 1.1) didn't include any PlatformID value for Unix, so Mono used the value 128. The newer framework 2.0 added Unix to the PlatformID enum but, sadly, with a different value: 4 and newer versions of .NET distinguished between Unix and macOS, introducing yet another value 6 for macOS.

This means that in order to detect properly code running on Unix platforms you must check the three values (4, 6 and 128). This ensure that the detection code will work as expected when executed on Mono CLR 1.x runtime and with both Mono and Microsoft CLR 2.x runtimes.

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