【CentOS】查询系统内核版本、系统版本、32位or64位

一、查看centos内核的版本：

1. [root@localhost ~]# cat /proc/version

Linux version 2.6.18-194.el5 ([email protected]) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-48)) #1 SMP Fri Apr 2 14:58:14 EDT 2010

2. [root@localhost ~]# uname -a

Linux localhost.localdomain 2.6.18-194.el5 #1 SMP Fri Apr 2 14:58:14 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux

3. [root@localhost ~]# uname -r

2.6.18-194.el5

二、查看linux版本：

1. 列出所有版本信息,

[root@localhost ~]# lsb_release -a

LSB Version: :core-3.1-amd64:core-3.1-ia32:core-3.1-noarch:graphics-3.1-amd64:graphics-3.1-ia32:graphics-3.1-noarch

Distributor ID: CentOS

Description: CentOS release 5.5 (Final)

Release: 5.5

Codename: Final

注:这个命令适用于所有的linux，包括Redhat、SuSE、Debian等发行版。

2. 执行cat /etc/issue,例如如下:

[root@localhost ~]# cat /etc/issue

CentOS release 5.5 (Final)

Kernel r on an m

3. 执行cat /etc/redhat-release ,例如如下:

[root@localhost ~]# cat /etc/redhat-release

CentOS release 5.5 (Final)

三 、查看系统是64位还是32位:

1. getconf LONG_BIT or getconf WORD_BIT

[root@localhost ~]# getconf LONG_BIT

64

2. file /bin/ls

[root@localhost ~]# file /bin/ls

/bin/ls: ELF 64-bit LSB executable, AMD x86-64, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, stripped

3. lsb_release -a

[root@localhost ~]# lsb_release -a

LSB Version: :core-3.1-amd64:core-3.1-ia32:core-3.1-noarch:graphics-3.1-amd64:graphics-3.1-ia32:graphics-3.1-noarch

Distributor ID: CentOS

Description: CentOS release 5.5 (Final)

Release: 5.5

Codename: Final