Linux. Version
From AsIsWiki
Получаем версию Linux
$ uname -r 2.6.32-220.13.1.el6.x86_64
$ uname -mrs Linux 2.6.32-220.13.1.el6.x86_64 x86_64
$ uname -a Linux some.domain.ru 2.6.32-220.13.1.el6.x86_64 #1 SMP Thu Mar 29 11:46:40 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux
$ cat /proc/version Linux version 2.6.32-220.13.1.el6.x86_64 (mockbuild@x86-002.build.bos.redhat.com) (gcc version 4.4.6 20110731 (Red Hat 4.4.6-3) (GCC) ) #1 SMP Thu Mar 29 11:46:40 EDT 2012
$ cat /proc/sys/kernel/{ostype,osrelease,version} Linux 2.6.32-220.13.1.el6.x86_64 #1 SMP Thu Mar 29 11:46:40 EDT 2012
$ cat /etc/*release Red Hat Enterprise Linux Server release 6.3 (Santiago) Red Hat Enterprise Linux Server release 6.3 (Santiago)
$ cat /etc/issue Red Hat Enterprise Linux Server release 6.3 (Santiago) Kernel \r on an \m