查看Linux系统信息

查看centos内核的版本：  
1)[root@localhost ~]# cat /proc/version  
Linux version 2.6.18-194.el5 (mockbuild@builder10.centos.org) (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  
2. 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)  
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

标签： CentOS linux

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