Command to require OS info

Hi,

I am new to UNIX environment. Can anybody tell me how can I check whether my OS is 32bit or 64bit?

Regards,
Malay Mary

try uname -a

It's giving me this output. Now how can I check from this. I think this is different.

SunOS punora030 5.9 Generic sun4u sparc SUNW,Ultra-60

Malay

/usr/bin/isainfo -kv

Cheers
ZB

It works. Thanks very much.