linux查看内核版本、系统版本、系统位数（32/64）

 

1. 查看内核版本命令：
1)、[root@localhost ~]# cat /proc/version
Linux version 2.6.18-92.el5 (brewbuilder@hs20-bc2-3.build.redhat.com) (gcc version 4.1.2 20071124 (Red Hat 4.1.2-41)) #1 SMP Tue Apr 29 13:16:12 EDT 2008
 

2）、[root@localhost ~]# uname -a
Linux localhost.localdomain 2.6.18-92.el5 #1 SMP Tue Apr 29 13:16:12 EDT 2008 i686 i686 i386 GNU/Linux

3）、[root@localhost ~]# uname -r
2.6.18-92.el5


        2. 查看linux版本：
1) 登陆到服务器执行 lsb_release -a ,便可列出全部版本信息,例如:
[root@localhost ~]# lsb_release -a
LSB Version:    :core-3.1-ia32:core-3.1-noarch:graphics-3.1-ia32:graphics-3.1-noarch
Distributor ID: RedHatEnterpriseServer
Description:    Red Hat Enterprise Linux Server release 5.2 (Tikanga)
Release:  5.2
Codename: Tikanga
注:这个命令适用于全部的linux，包括Redhat、SuSE、Debian等发行版。

 

2) 登陆到linux执行cat /etc/issue,例如以下:
[root@q1test01 ~]# cat /etc/issue
Red Hat Enterprise Linux AS release 4 (Nahant Update 2)
Kernel \r on an \m
 

3) 登陆到linux执行cat  /etc/redhat-release ,例如以下:
[root@q1test01 ~]# cat /etc/redhat-release
Red Hat Enterprise Linux AS release 4 (Nahant Update 2)
注:这种方式下能够直接看到具体的版本号，好比 AS4 Update 1

4) 登陆到linux执行rpm -q redhat-release ,例如以下:
[root@q1test01 ~]# rpm -q  redhat-release
redhat-release-4AS-3
注:这种方式下可看到一个所谓的release号，好比上边的例子是3
这个release号和实际的版本之间存在必定的对应关系，以下：
redhat-release-3AS-1 -> Redhat Enterprise Linux AS 3
redhat-release-3AS-7.4 -> Redhat Enterprise Linux AS 3 Update 4
redhat-release-4AS-2 -> Redhat Enterprise Linux AS 4
redhat-release-4AS-2.4 -> Redhat Enterprise Linux AS 4 Update 1
redhat-release-4AS-3 -> Redhat Enterprise Linux AS 4 Update 2
redhat-release-4AS-4.1 -> Redhat Enterprise Linux AS 4 Update 3
redhat-release-4AS-5.5 -> Redhat Enterprise Linux AS 4 Update 4
另:第3)、4)两种方法只对Redhat Linux有效.

 

              三、查看系统是64位仍是32位:
一、getconf   LONG_BIT  或  getconf    WORD_BIT

[root@localhost ~]# getconf LONG_BIT
32

二、file /bin/ls

[root@localhost ~]# file /bin/ls
/bin/ls: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 2.6.9, stripped

三、lsb_release -a