uname — Print operating system name
The uname utility writes symbols representing one or more system charac-
teristics to the standard output.
The following options are available:
-a Behave as though all of the options -mnrsv were specified.
-m print the machine hardware name.
-n print the nodename (the nodename may be a name that the system is
known by to a communications network).
-p print the machine processor architecture name.
-r print the operating system release.
-s print the operating system name.
-v print the operating system version.
If no options are specified, uname prints the operating system name as if
the -s option had been specified.
hostname(1), machine(1), sw_vers(1), uname(3)
The uname utility conforms to IEEE Std 1003.2-1992 (“POSIX.2”). The -p
option is an extension to the standard.