The
uname utility writes symbols representing one or more system characteristics 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.