Find EXADATA version kernel version cell version

As root:

[root@ ~]# /usr/local/bin/imageinfo

Kernel version: 2.6.18-274.18.1.0.1.el5 #1 SMP Thu Feb 9 19:07:16 EST 2012 x86_64
Image version: 11.2.3.1.0.120304
Image status: success
System partition on device: /dev/mapper/VGExaDb-LVDbSys1


On cell server as root:
[root@ ~]# imageinfo

Kernel version: 2.6.18-274.18.1.0.1.el5 #1 SMP Thu Feb 9 19:07:16 EST 2012  x86_64
Cell version: OSS_11.2.3.1.0_LINUX.X64_120304
Cell rpm version: cell-11.2.3.1.0_LINUX.X64_120304-1

Active image version: 11.2.3.1.0.120304
Active image status: success
Active system partition on device: /dev/md5
Active software partition on device: /dev/md7

In partition rollback: Impossible

Cell boot usb partition: /dev/sdm1
Cell boot usb version: 11.2.3.1.0.120304

You can also use imagehistory to list the previous images if any:

[root@ex01cel01 ~]# imagehistory
Version                              : 11.2.3.1.0.120304
Image activation date                : 2012-06-06 16:04:10 -0400
Imaging mode                         : fresh
Imaging status                       : success