Print information about the machine and operating system. Without options, print the name of the kernel (Linux).
Combine all the system information from the other options.
Print the system’s hardware platform.
Print the name of the hardware that the system is running on.
Print the machine’s hostname.
Print the operating system name.
Print the type of processor.
Print the release number of the kernel.
Print the name of the kernel (Linux). This is the default action.
Print build information about the kernel.
Display a help message and then exit.
Print version information and then exit.