兩種核心版本查詢方式：

1）cat /proc/version

Linux version 2.6.18-238.el5 () (gcc version 4.1.2 20080704 (Red Hat 4.1.2-48)) #1 SMP Thu Jan 13 16:24:47 EST 2011

2) uname -a

Linux hq 2.6.18-238.el5 #1 SMP Thu Jan 13 16:24:47 EST 2011 i686 i686 i386 GNU/Linux

三種發行版本查詢方式：

1）lsb_release -a

LSB Version:    :core-4.0-ia32:core-4.0-noarch:graphics-4.0-ia32:graphics-4.0-noarch:printing-4                                                                         .0-ia32:printing-4.0-noarch
Distributor ID: CentOS
Description:    CentOS release 5.6 (Final)
Release:        5.6
Codename:       Final

2) cat /etc/issue

CentOS release 5.6 (Final)
Kernel \r on an \m

3) cat /etc/***_release

CentOS release 5.6 (Final)

查詢linux的核心版本和發行版本

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