The isainfo utility is used to identify various attributes of the instruction set architectures supported on the currently running system. Among the questions it can answer are whether 64-bit applications are supported, or whether the running kernel uses 32-bit or 64-bit device drivers.

When invoked with no flags, isainfo prints the name(s) of the native instruction sets for applications supported by the current version of the operating system. These will be a subset of the list returned by isalist(1). The subset corresponds to the basic applications environments supported by the currently running system.

The following options are supported:

-b

Prints the number of bits in the address space of the native instruction set.

-k

Prints the name of the instruction set(s) used by the operating system kernel components such as device drivers and STREAMS modules.

-n

Prints the name of the native instruction set used by portable applications supported by the current version of the operating system.

-v

Prints more detailed information about the other options.

Non-zero

Flags are not specified correctly, or the command is unable to recognize attributes of the system on which it is running. An error message is printed to stderr.

See attributes(5) for descriptions of the following attributes:

isalist(1), uname(1), psrinfo(1M), sysinfo(2), attributes(5), isalist(5)