This article describe how to verify your Operating System (OS) version.

SLES 10 (SuSE Linux Enterprise  version 10 SP 1)
hostname:~ # uname
Linux
hostname:~ # ls /etc/*-rel*
/etc/SuSE-release
hostname:~ # cat /etc/SuSE-release
SUSE Linux Enterprise Server 10 (x86_64)
VERSION = 10

PATCHLEVEL = 1


 

OEL 5 (Oracle Enterprise Linux 5)
[root@hostname ~]# ls /etc/*-release
/etc/OEL-release  /etc/enterprise-release  /etc/redhat-release
[root@hostname ~]# cat /etc/redhat-release
Enterprise Linux Enterprise Linux Server release 5.2 (Carthage)



RHEL SP3 (Red Hat Enterprise Linux Release 3, Update 9)
login as: admin
admin@hostname's password:
[admin@hostname admin]$ sudo su -
[root@hostname root]# ls /etc/*-rel*
/etc/RHEL-release  /etc/lsb-release  /etc/redhat-release
[root@hostname root]# cat /etc/redhat-release
Red Hat Enterprise Linux AS release 3 (Taroon Update 9)
[root@hostname root]#


For All Microsoft Windows OS:

Start > Run > type “Winver” > Enter

Microsoft Windows OS Version