一、uname -a
[app@VM_11_211_centos ~]$ uname -a
Linux VM_11_211_centos 2.6.32-504.30.3.el6.x86_64 #1 SMP Wed Jul 15 10:13:09 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
二、cat /proc/version
[app@VM_11_211_centos ~]$ cat /proc/version
Linux version 2.6.32-504.30.3.el6.x86_64 ([email protected]) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-11) (GCC) ) #1 SMP Wed Jul 15 10:13:09 UTC 2015
一和二顯示結果都是linux內核的版本號,只是方法二中多了redhat信息。
三、cat /etc/redhat-release
[app@VM_11_211_centos ~]$ cat /etc/redhat-release
CentOS release 6.3 (Final)
三顯示的是系統安裝時centos默認的發行版本信息,通常安裝好系統後文件內容不會發生變化。