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NAME

uname — print operating system name

SYNOPSIS

DESCRIPTION

The uname utility writes symbols representing one or more system characteristics to the standard output.

The options are as follows:

-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.

EXIT STATUS

The uname utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

hostname(1), machine(1), uname(3)

STANDARDS

The uname utility is compliant with the IEEE Std 1003.1-2008 (“POSIX.1”) specification.

The flag [-p] is an extension to that specification.

HISTORY

The uname command appeared in 4.4BSD.