Checking Current OS Version in Linux
Introduction
Linux is an open-source operating system that is widely used in various industries and personal settings. One of the essential features of Linux is its ability to display the current version of the operating system. In this article, we will guide you through the process of checking the current OS version in Linux.
Method 1: Using the uname Command
The uname command is a built-in Linux utility that displays information about the operating system, including the version. Here’s how to use it:
- Open a terminal on your Linux system.
- Type
uname -aand press Enter. - The output will display information about the operating system, including the version.
| Field | Description |
|---|---|
| OS | The name of the operating system (e.g., Linux, Ubuntu, etc.) |
| Release | The version of the operating system (e.g., 4.15.0-42-generic, etc.) |
| Version | The exact version of the operating system (e.g., 4.15.0-42-generic, etc.) |
| Machine | The type of hardware (e.g., x86_64, i386, etc.) |
| Processor | The type of processor (e.g., Intel Core i7, AMD Ryzen 9, etc.) |
Method 2: Using the cat /etc/os-release File
The /etc/os-release file is a configuration file that contains information about the operating system, including the version. Here’s how to use it:
- Open a terminal on your Linux system.
- Type
cat /etc/os-releaseand press Enter. - The output will display information about the operating system, including the version.
| Field | Description |
|---|---|
| NAME | The name of the operating system (e.g., Ubuntu, Fedora, etc.) |
| VERSION_ID | The version of the operating system (e.g., 4.15.0-42-generic, etc.) |
| VERSION | The exact version of the operating system (e.g., 4.15.0-42-generic, etc.) |
| ID | The ID of the operating system (e.g., ubuntu-focal, fedora-30, etc.) |
| VERSION | The exact version of the operating system (e.g., 4.15.0-42-generic, etc.) |
Method 3: Using the lsb_release -a Command
The lsb_release -a command is a built-in Linux utility that displays information about the operating system, including the version. Here’s how to use it:
- Open a terminal on your Linux system.
- Type
lsb_release -aand press Enter. - The output will display information about the operating system, including the version.
| Field | Description |
|---|---|
| NAME | The name of the operating system (e.g., Ubuntu, Fedora, etc.) |
| VERSION | The exact version of the operating system (e.g., 4.15.0-42-generic, etc.) |
| ID | The ID of the operating system (e.g., ubuntu-focal, fedora-30, etc.) |
| VERSION | The exact version of the operating system (e.g., 4.15.0-42-generic, etc.) |
Method 4: Using the cat /etc/lsb-release File
The /etc/lsb-release file is a configuration file that contains information about the operating system, including the version. Here’s how to use it:
- Open a terminal on your Linux system.
- Type
cat /etc/lsb-releaseand press Enter. - The output will display information about the operating system, including the version.
| Field | Description |
|---|---|
| NAME | The name of the operating system (e.g., Ubuntu, Fedora, etc.) |
| VERSION | The exact version of the operating system (e.g., 4.15.0-42-generic, etc.) |
| ID | The ID of the operating system (e.g., ubuntu-focal, fedora-30, etc.) |
| VERSION | The exact version of the operating system (e.g., 4.15.0-42-generic, etc.) |
Conclusion
Checking the current OS version in Linux is a simple process that can be done using various methods. By using the uname, cat /etc/os-release, lsb_release -a, and cat /etc/lsb-release commands, you can obtain information about the operating system, including the version. This information can be useful for various purposes, such as troubleshooting, upgrading, and installing new software.
Tips and Variations
- You can also use the
uname -rcommand to display the kernel version. - You can use the
uname -vcommand to display the version of the kernel. - You can use the
uname -scommand to display the system type (e.g., x86_64, i386, etc.). - You can use the
uname -Scommand to display the system architecture (e.g., 64-bit, 32-bit, etc.).
Common Issues and Solutions
- If you are unable to find the
/etc/os-releasefile, you can try using thelsb_release -acommand instead. - If you are unable to find the
cat /etc/lsb-releasefile, you can try using thelsb_release -acommand instead. - If you are unable to find the
cat /etc/os-releasefile, you can try using theuname -acommand instead.
Conclusion
Checking the current OS version in Linux is a simple process that can be done using various methods. By using the uname, cat /etc/os-release, lsb_release -a, and cat /etc/lsb-release commands, you can obtain information about the operating system, including the version. This information can be useful for various purposes, such as troubleshooting, upgrading, and installing new software.