arch(1) User Commands arch(1)
arch - display the architecture of the current host
arch [-k | archname]
The arch utility displays the application architecture of the current
host system. Due to extensive historical use of this command without
any options, all SunOS 5.x SPARC based systems will return "sun4" as
their application architecture. Use of this command is discouraged. See
NOTES section below.
Systems can be broadly classified by their architectures, which define
what executables will run on which machines. A distinction can be made
between kernel architecture and application architecture (or, commonly,
just "architecture"). Machines that run different kernels due to under-
lying hardware differences may be able to run the same application pro-
-k Displays the kernel architecture, such as sun4u. This defines
which specific SunOS kernel will run on the machine, and has
implications only for programs that depend on the kernel
explicitly (for example, ps(1)).
The following operand is supported:
archname Use archname to determine whether the application bina-
ries for this application architecture can run on the
current host system. The archname must be a valid
application architecture, such as sun4, i86pc, and so
If application binaries for archname can run on the
current host system, TRUE (0) is returned. Otherwise,
FALSE (1) is returned.
The following exit values are returned:
0 Successful completion.
>>0 An error occurred.
See attributes(5) for descriptions of the following attributes:
tab() allbox; cw(2.750000i)| cw(2.750000i) lw(2.750000i)|
lw(2.750000i). ATTRIBUTE TYPEATTRIBUTE VALUE AvailabilitySUNWcsu
mach(1), ps(1), uname(1), attributes(5)
This command is provided for compatibility with previous releases and
its use is discouraged. Instead, the uname command is recommended. See
uname(1) for usage information.
SunOS 5.10 21 Oct 2002 arch(1)