uname

Print details about the current machine and the operating system running on it. Note: for additional information about the operating system, try the sw_vers command. More information: https://keith.github.io/xcode-man-pages/uname.1.html.

Print kernel name:

uname

Print system architecture and processor information:

uname -mp

Print kernel name, kernel release and kernel version:

uname -srv

Print system hostname:

uname -n

Print all available system information:

uname -a