How to see os version and bit in sun solaries

How to see os version and bit in sun solaries
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if you face following types of question . you can find the solution here.

How to check version and bit of Solaris?
Command to know Solaris version and bit?
Find solaris os installation date.
SOlaris OS


Solution:-
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Last login: Sun May 15 07:24:25 2011 from 10.11.1.38
Sun Microsystems Inc. SunOS 5.10 Generic January 2005
You have new mail.
# su
Password:
#
# uname -a
SunOS report-db 5.10 Generic_127128-11 i86pc i386 i86pc
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# pwd
/
#
#
# more /etc/release
Solaris 10 5/08 s10x_u5wos_10 X86
Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
Use is subject to license terms.
Assembled 24 March 2008
#
#


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here :-

Solaris 10 Means the OS is Solaris 10 (SunOS 5.10)

5/08 Means that this is the specific release of Solaris 10 made in May 2008
X86 This version is compiled for X86 processors (means 32 bit)