uname #

Print certain system information.  With no OPTION, same as -s

-a, --all
        print all information, in the following order, except omit -p and -i if unknown:

-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 (non-portable)

-i, --hardware-platform
        print the hardware platform (non-portable)

-o, --operating-system
        print the operating system

--help display this help and exit

--version
        output version information and exit