rdmsr --version (return code: 0)
rdmsr: version msr-tools-1.3
rdmsr --help (return code: 0)
Usage: rdmsr [options] regno
--help -h Print this help
--version -V Print current version
--hexadecimal -x Hexadecimal output (lower case)
--capital-hex -X Hexadecimal output (upper case)
--decimal -d Signed decimal output
--unsigned -u Unsigned decimal output
--octal -o Octal output
--c-language -c Format output as a C language constant
--zero-pad -0 Output leading zeroes
--raw -r Raw binary output
--all -a all processors
--processor # -p Select processor number (default 0)
--bitfield h:l -f Output bits [h:l] only