The isainfo command can be used to determine if a Solaris system has been configured to run in 32 or 64 bit mode.
Run the the following command:
isainfo -v
If the system is running in 32 bit mode, you will see output as follows:
32-bit sparc applications
On a 64 bit Solaris system, you will see the following:
64-bit sparcv9 applications
32-bit sparc applications
