UNAME(1) BSD Reference Manual UNAME(1)
uname - display information about the system
The uname command writes the name of the operating system implementation
to standard output. When options are specified, strings representing one
or more system characteristics are written to standard output.
The options are as follows:
-a Behave as though the options -m, -n, -r, -s, and -v were speci-
-m Write the type of the current hardware platform to standard out-
-n Write the name of the system to standard output.
-r Write the current release level of the operating system to stan-
-s Write the name of the operating system implementation to standard
-v Write the version level of this release of the operating system
to standard output.
If the -a flag is specified, or multiple flags are specified, all output
is written on a single line, separated by spaces.
The uname utility exits 0 on success, and >0 if an error occurs.
sysctl(8), sysctl(3), uname(3)
The uname command appeared in 4.4BSD.
The uname command is expected to conform to the IEEE Std1003.2
4.4BSD April 8, 1994 1