{"id":3771,"date":"2025-11-04T13:38:53","date_gmt":"2025-11-04T13:38:53","guid":{"rendered":"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/?p=3771"},"modified":"2025-12-12T10:10:19","modified_gmt":"2025-12-12T10:10:19","slug":"check-os-kernel-version-in-linux","status":"publish","type":"post","link":"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/482\/check-os-kernel-version-in-linux.html","title":{"rendered":"How to Check OS Kernel Version in Linux\u200b?"},"content":{"rendered":"\n<p>When you are managing a Linux server or troubleshooting a technical issue, one of the most basic yet important things you might need to know is your Linux kernel version.<\/p>\n\n\n\n<p>Think of the kernel as the heart of your Linux operating system. It\u2019s the core layer that serves as a bridge between your computer\u2019s hardware (such as the CPU, memory, and storage) and the software (applications and system processes).<\/p>\n\n\n\n<p>In simple terms, when you run a command or open a program, the kernel is the one that talks to your hardware and gets the work done. It also helps you understand the core of your operating system, its software compatibility, available drivers, and even potential security vulnerabilities.<\/p>\n\n\n\n<p>In this guide, we will explain how to check the kernel version easily using different methods, step by step and in detail!<\/p>\n\n\n\n<hr><p><strong>Also Read: <\/strong><a href=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/446\/search-file-in-linux-using-commands.html\"><strong>How to Search a File in Linux Using a Command?<\/strong><\/a><\/p><hr>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Why Knowing the Kernel Version is Important<\/strong><\/h2>\n\n\n\n<p><strong>Here are a few key reasons why checking your kernel version can be useful:<\/strong><\/p>\n\n\n\n<p>\u27a2 <strong>Compatibility Check: <\/strong>Some software or drivers require a specific kernel version to function properly.<\/p>\n\n\n\n<p>\u27a2 <strong>Troubleshooting:<\/strong> When encountering a bug or crash, the kernel version helps determine whether the issue is version-related.<\/p>\n\n\n\n<p>\u27a2 <strong>Security Updates:<\/strong> Knowing the kernel version helps ensure your system isn\u2019t missing any critical patches.<\/p>\n\n\n\n<p>\u27a2 <strong>Security Updates:<\/strong> Knowing the kernel version helps ensure your system isn\u2019t missing any critical patches.<\/p>\n\n\n\n<hr><p><strong>Also Read: <\/strong><a href=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/427\/echo-command-in-linux.html\"><strong>A Guide to Echo Command in Linux With Examples<\/strong><\/a><\/p><hr>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Methods to Check OS Kernel Version in Linux<\/strong><\/h2>\n\n\n\n<p>Now, let\u2019s move to the part you came for, checking your Linux kernel version.<\/p>\n\n\n\n<p>There are multiple commands you can use, and we will go through the most popular and reliable ones.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. <strong>Using the uname Command<\/strong><\/h3>\n\n\n\n<p>This is the simplest and most common way to check your kernel version.<\/p>\n\n\n\n<p>\u2605 <strong>Command:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span><table class=\"has-fixed-layout\"><tbody><tr><td class=\"kb_firewall\"><strong>uname -r<\/strong><\/td>\n<\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u2605 <strong>Output Example:<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"139\" height=\"22\" src=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/wp-content\/uploads\/2025\/11\/Check-OS-Kernel-Version-in-Linux-Using-the-uname-r-Command.png\" alt=\"Check OS Kernel Version in Linux Using the uname -r Command\" class=\"wp-image-3774\"\/><\/figure>\n<\/div>\n\n\n<p><strong>Explanation:<\/strong><\/p>\n\n\n\n<p>The <strong>-r<\/strong> flag stands for <strong>\u2018release.\u2019<\/strong><\/p>\n\n\n\n<p>It displays the kernel release number, which indicates which version of the Linux kernel your system is running.<\/p>\n\n\n\n<p>You can also run:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span><table class=\"has-fixed-layout\"><tbody><tr><td class=\"kb_firewall\"><strong>uname -a<\/strong><\/td>\n<\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>This gives all system details, including kernel version, OS type, and architecture.<\/p>\n\n\n\n<p>\u2605 <strong>Output Example:<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"648\" height=\"36\" src=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/wp-content\/uploads\/2025\/11\/Check-OS-Kernel-Version-in-Linux-Using-the-uname-a-Command.png\" alt=\"Check OS Kernel Version in Linux Using the uname -a Command\" class=\"wp-image-3773\" srcset=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/wp-content\/uploads\/2025\/11\/Check-OS-Kernel-Version-in-Linux-Using-the-uname-a-Command.png 648w, https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/wp-content\/uploads\/2025\/11\/Check-OS-Kernel-Version-in-Linux-Using-the-uname-a-Command-300x17.png 300w\" sizes=\"auto, (max-width: 648px) 100vw, 648px\" \/><\/figure>\n<\/div>\n\n\n<hr><p><strong>Also Read: <\/strong><a href=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/425\/remove-directory-in-linux.html\"><strong>How To Remove Directory in Linux With Command?<\/strong><\/a><\/p><hr>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>2. Using the \/proc\/version File<\/strong><\/h3>\n\n\n\n<p>Linux stores kernel information in various system files. You can read the version directly from the system file <strong>\/proc\/version<\/strong>.<\/p>\n\n\n\n<p>\u2605 <strong>Command:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span><table class=\"has-fixed-layout\"><tbody><tr><td class=\"kb_firewall\"><strong>cat \/proc\/version<\/strong><\/td>\n<\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u2605 <strong>Output Example:<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"449\" height=\"48\" src=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/wp-content\/uploads\/2025\/11\/Check-OS-Kernel-Version-in-Linux-Using-the-proc-version-File.png\" alt=\"Check OS Kernel Version in Linux Using the proc version File\" class=\"wp-image-3775\" srcset=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/wp-content\/uploads\/2025\/11\/Check-OS-Kernel-Version-in-Linux-Using-the-proc-version-File.png 449w, https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/wp-content\/uploads\/2025\/11\/Check-OS-Kernel-Version-in-Linux-Using-the-proc-version-File-300x32.png 300w\" sizes=\"auto, (max-width: 449px) 100vw, 449px\" \/><\/figure>\n<\/div>\n\n\n<p><strong>Explanation:<\/strong><\/p>\n\n\n\n<p>This method gives you detailed information, including the compiler used to build the kernel and the build date.<\/p>\n\n\n\n<p>It\u2019s especially useful if you are debugging or compiling software that depends on kernel builds.<\/p>\n\n\n\n<hr><p><strong>Also Read: <\/strong><a href=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/417\/how-to-change-server-time-in-linux.html\"><strong>How to Change Server Time in Linux?<\/strong><\/a><\/p><hr>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>3. Using the hostnamectl Command<\/strong><\/h3>\n\n\n\n<p>If you are using systemd-based Linux distributions (like Ubuntu, Debian, CentOS 7+, Fedora, etc.), you can use:<\/p>\n\n\n\n<p>\u2605 <strong>Command:<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span><table class=\"has-fixed-layout\"><tbody><tr><td class=\"kb_firewall\"><strong>hostnamectl<\/strong><\/td>\n<\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u2605 <strong>Output Example:<\/strong><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"413\" height=\"147\" src=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/wp-content\/uploads\/2025\/11\/Check-OS-Kernel-Version-in-Linux-Using-the-hostnamectl-Command.png\" alt=\"Check OS Kernel Version in Linux Using the hostnamectl Command\" class=\"wp-image-3776\" srcset=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/wp-content\/uploads\/2025\/11\/Check-OS-Kernel-Version-in-Linux-Using-the-hostnamectl-Command.png 413w, https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/wp-content\/uploads\/2025\/11\/Check-OS-Kernel-Version-in-Linux-Using-the-hostnamectl-Command-300x107.png 300w\" sizes=\"auto, (max-width: 413px) 100vw, 413px\" \/><\/figure>\n<\/div>\n\n\n<p>\u2605 <strong>Explanation:<\/strong><\/p>\n\n\n\n<p>This command gives you a clean summary of your system details, including the kernel version, OS name, and architecture.<\/p>\n\n\n\n<hr><p><strong>Also Read: <\/strong><a href=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/401\/how-to-create-sudo-user-in-linux.html\"><strong>How to Create a User in Linux &amp; Add it to the sudoer File?<\/strong><\/a><\/p><hr>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>4. Using the lsb_release Command (Optional)<\/strong><\/h3>\n\n\n\n<p>While this doesn\u2019t directly show the kernel version, it\u2019s handy if you want to check OS and kernel info together.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span><table class=\"has-fixed-layout\"><tbody><tr><td class=\"kb_firewall\"><strong>lsb_release -a<\/strong><\/td>\n<\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Then combine it with:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><button class=\"copy-btn\" onclick=\"copyCommand(this)\">\ud83d\udccb<\/button><span class=\"copy-msg\">Copied!<\/span><table class=\"has-fixed-layout\"><tbody><tr><td class=\"kb_firewall\"><strong>uname -r<\/strong><\/td>\n<\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u2605 <strong>Output Example:<\/strong><\/p>\n\n\n\n<hr><p><strong>Also Read: <\/strong><a href=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/441\/restart-linux-server-by-command.html\"><strong>How to Restart\/Reboot Linux Server by Command?<\/strong><\/a><\/p><hr>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Quick Summary<\/strong><\/h2>\n\n\n\n  <table style=\"border-collapse: collapse; width: 100%;\" border=\"1\">\n    <tbody>\n      <tr style=\"height: 18px;\">\n        <th style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\"><strong>Method<\/strong><\/span><\/p><\/th>\n        <th style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\"><strong>Command<\/strong><\/span><\/p><\/th>\n        <th style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\"><strong>Output Includes<\/strong><\/span><\/p><\/th>\n      <\/tr>\n      <tr style=\"height: 18px;\">\n        <td style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\"><strong>uname -r<\/strong><\/span><\/p><\/td>\n        <td style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\">Shows kernel release only<\/span><\/p><\/td>\n        <td style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\">Quick checks<\/span><\/p><\/td>\n      <\/tr>\n      <tr style=\"height: 18px;\">\n        <td style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\"><strong>uname -a<\/strong><\/span><\/p><\/td>\n        <td style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\">Shows full kernel + system info<\/span><\/p><\/td>\n        <td style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\">Detailed overview<\/span><\/p><\/td>\n      <\/tr>\n      <tr style=\"height: 18px;\">\n        <td style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\"><strong>cat \/proc\/version<\/strong><\/span><\/p><\/td>\n        <td style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\">Shows kernel + compiler info<\/span><\/p><\/td>\n        <td style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\">Advanced users\/debugging<\/span><\/p><\/td>\n      <\/tr>\n      <tr style=\"height: 18px;\">\n        <td style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\"><strong>hostnamectl<\/strong><\/span><\/p><\/td>\n        <td style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\">Shows kernel + OS details<\/span><\/p><\/td>\n        <td style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\">Systemd-based distros<\/span><\/p><\/td>\n      <\/tr>\n      <tr style=\"height: 18px;\">\n        <td style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\">\n          <strong>lsb_release -a<\/strong><br>\n          <strong>+<\/strong><br>\n          <strong>uname -r<\/strong>\n        <\/span><\/p><\/td>\n        <td style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\">Shows OS + Kernel together<\/span><\/p><\/td>\n        <td style=\"padding: 5px 10px; width: 33%; height: 18px; text-align: center;\"><p><span style=\"font-weight: 400; font-family: verdana, geneva, sans-serif;\">Full info summary<\/span><\/p><\/td>\n      <\/tr>\n    <\/tbody>\n  <\/table>\n\n\n\n<hr><p><strong>Also Read: <\/strong><a href=\"https:\/\/www.hostitsmart.com\/manage\/knowledgebase\/440\/how-to-configure-dns-in-linux.html\"><strong>How to Configure DNS on Linux?<\/strong><\/a><\/p><hr>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Wrapping Up<\/strong><\/h2>\n\n\n\n<p>Checking your Linux kernel version is a simple but powerful step when managing or troubleshooting your system.<\/p>\n\n\n\n<p><strong>You can quickly find it using:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>uname -r<\/strong> \u2192 For Instant kernel version<\/li>\n\n\n\n<li><strong>cat \/proc\/version<\/strong> \u2192 For detailed info<\/li>\n\n\n\n<li><strong>hostnamectl <\/strong>\u2192 For OS + Kernel overview<\/li>\n<\/ul>\n\n\n\n<p>Whether you are a system administrator, developer, or just someone learning Linux, understanding the kernel version helps you keep your system up to date, secure, and efficient.<\/p>\n\n<script>\nfunction copyCommand(btn) {\n  const td = btn.parentElement.querySelector(\"td.kb_firewall\");\n  const text = td.innerText.trim();\n\n  navigator.clipboard.writeText(text).then(() => {\n    const msg = btn.parentElement.querySelector(\".copy-msg\");\n    msg.style.display = \"inline-block\";\n    setTimeout(() => msg.style.display = \"none\", 1000);\n  });\n}\n<\/script>","protected":false},"excerpt":{"rendered":"<p>When you are managing a Linux server or troubleshooting a technical issue, one of the most basic yet important things you might need to know is your Linux kernel version. Think of the kernel as the heart of your Linux operating system. It\u2019s the core layer that serves as a bridge between your computer\u2019s hardware [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-3771","post","type-post","status-publish","format-standard","hentry","category-vps"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Check OS Kernel Version in Linux\u200b?<\/title>\n<meta name=\"description\" content=\"Learn how to check your OS kernel version in Linux using simple commands, with a guide for beginners to identify Linux distributions and version easily.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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