The uname function stores null-terminated strings of information
    identifying the current system into the structure referenced by
    the name argument.

    The utsname structure is defined in the <utsname.h> header file
    and contains the following members:

    sysname        Name of the operating system implementation
    nodename       Network name of this machine
    release        Release level of the operating system
    version        Version level of the operating system
    machine        Machine hardware platform