Sometimes you need to get information about the kernel running on your Linux box.

You can use the uname command to print certain system information including kernel name.

Type the following command to print kernel version number:
$ uname -r
            
uname command options

• -a, --all - print all information
• -s, --kernel-name - print the kernel name
• -n, --nodename - print the network node hostname
• -r, --kernel-release - print the kernel release
• -v, --kernel-version - print the kernel version
• -m, --machine - print the machine hardware name
• -p, --processor - print the processor type or "unknown"
• -i, --hardware-platform - print the hardware platform or "unknown"
• -o, --operating-system - print the operating system

Another option is to type the following cat command:
        $ cat /proc/version