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OpenSolaris 2009.06 - man page for arch (opensolaris section 1)

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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 dis-
       couraged. 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  underlying  hardware differences may be able to run the same application

       -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 binaries for  this  applica-
		   tion  architecture can run on the current host system. The  archname must be a
		   valid application architecture, such as  sun4, i86pc, and so forth.

		   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:

       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       |Availability		     |SUNWcsu			   |

       mach(1), ps(1), uname(1), attributes(5)

       This  command is provided for compatibility with previous releases and its use is discour-
       aged. Instead, the uname command is recommended. See  uname(1) for usage information.

SunOS 5.11				   21 Oct 2002					  arch(1)
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