What are some ways to check if your computer is running the Linux operating system

Command Line Interface:

Run the command cat /proc/version in the terminal. If the output includes "Linux version", your computer is running Linux.
Check the output of uname -a. If it displays "Linux", Linux is the operating system.

Graphical User Interface:

In the system settings or about section, look for information about the operating system.
Open the terminal and enter hostnamectl. The output should include the operating system name, eg. "Operating System: Linux".

Other Methods:

Examine the boot screen. Many Linux distributions display their logo or a message indicating Linux during boot.
Check the file system. Linux uses a unique file system called ext4 or XFS. You can verify this using commands like df -T.
Look for Linux-specific software. If applications like Firefox, LibreOffice, or GIMP are installed, it's likely you're running Linux.

What is the difference between Linux and Windows? Linux is open-source and free, while Windows is proprietary and paid.
Can I install Linux on my Windows computer? Yes, you can dual-boot or use a virtual machine.
Which Linux distribution should I use for beginners? Ubuntu, Mint, or Pop!_OS are popular and user-friendly options.
How do I update my Linux system? Use the commands sudo apt update and sudo apt upgrade in the terminal.
Can I run Windows software on Linux? Yes, using virtualization software like VirtualBox or Wine.

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What are some ways to check if your computer is running the Linux operating system?