How can you check the running kernel version?

To check the running kernel version in a Linux system, using the command "uname -r" will return the version of the kernel that is currently in use. The "uname" command is a standard tool used to retrieve system information, and the specific option "-r" stands for "release," which indicates that you're asking for the kernel release version.

This command provides a straightforward way to obtain essential information about the operating system's kernel, useful for tasks that require knowledge of the kernel version, such as troubleshooting, system compatibility checks, or when performing kernel upgrades.

Other options do not serve this purpose effectively. For example, "uname -v" provides the kernel version but not specifically the release. "kernel -version" and "checkkernel" are not standard commands in Linux for retrieving kernel information, making them ineffective for this task.