A Linux operating system’s kernel acts as its brain, coordinating communication between hardware and software. For purposes of compatibility, security upgrades, and troubleshooting, knowledge of the kernel version is crucial. Thankfully, Linux provides a quick and effective way to check the kernel version using the command line. We’ll lead you through the simple procedures in this blog post to reveal the kernel version of your Linux system. DedicatedCore VPS hosting provides the highest level of control with a kernel virtual server for hassle-free customization.

Empowering you to make defensible choices regarding the compatibility and maintenance of your system. In many aspects, the Linux kernel is similar to the brain of the operating system. Despite being open-source, which allows anybody to examine and alter the code. The Linux kernel is constructed using several protocols to guarantee stability and security. After updating the Linux kernel version with the different options and steps for better hardware support and kernel updates to improve performance.

Checking Linux Kernel Version: 4 Commands

1. Command Uname

Then, enter the following commands into the terminal window:

uname –r

A numerical code will be returned by the system, such as:

3.10.0-957.21.2.

Each number is a component of a code, each one separated by a dot or hyphen:

  • The current kernel version: 3
  • This is the major release version, which is: 10
  • This is the degree of minor revision: .0
  • The level of patches and bug fixes is: -957

check kernel version using uname command

You can use the additional options of the uname command to learn more about your kernel. Simply follow the command with an option:

  • Display every piece of information: -a
  • Display the operating system, which is often GNU/Linux: -o
  • Display kernel release: -r
  • Display kernel version; often displays base OS and time of compilation: -v

Enter to see a complete set of uname commands.

uname ––help

2. Command: hostnamectl

more kernel information using uname command

The hostnamectl command is frequently used to provide details about the network settings of the system. The version of the kernel is also shown. Enter the following information to check the kernel version:

hostnamectl

Should read second-to-last:

Kernel: Linux 3.10.0-957.21.2.el7.x86_64

3. Exhibit the /proc/version File

using hostname command check kernel version

Enter the command to see the proc version file:

cat /proc/version

The proc/version file’s contents are shown via the cat command. The first thing that will be output along with more information about your operating system is the version of the Linux kernel.

using command display proc version

4. dmesg Command

The kernel’s message buffer is printed using the dmesg program. This can also be used to determine the kernel version. It is typically used to read messages from device drivers.

dmesg | grep Linux

Usually, right above the enter key on the same key as the sign is the (pipe) symbol.

check kernel version using dmesg command

Following is how the commands operate:

  • Read the kernel buffer’s contents: dmesg
  • The command is piped into the following command: |
  • grep is a program that looks for a specific string of characters and displays any lines that contain it: grep
  • The precise character sequence that grep should look for (capitalization matters): Linux

Final Thought on How to Check Kernel Version in Linux

Knowing how to check your kernel version using the command line is a key skill in the complex world of Linux. You now have the means to quickly retrieve this important piece of knowledge thanks to this guide. Checking your kernel version gives you the confidence to use your Linux system, whether you’re looking for compatibility information or making sure you’re up to current on security patches.

You learned several different methods in this guide for determining the Linux kernel version. You shouldn’t require sudo access because all you’re doing is viewing a file’s output. The modular architecture of the Linux kernel. With modules or drivers, functionality can be expanded. Learn how to use the modprobe command on Linux to add or remove modules.