如何查看已安装的版本信息：
1)[root ~]# cat /proc/version
Linux version 2.6.18-194.el5 (mockbuild@builder10.centos.org) (gcc version 4.1.2 20080704 ( 4.1.2-48)) #1 SMP Fri Apr 2 14:58:14 EDT 2010
2)
[root ~]# 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 ~]# uname -r
2.6.18-194.el5
2. 查看linux版本：
1) 列出所有版本信息,
[root ~]# 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、、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
4、或者是使用查看文件的方法。
vim /ect/issue
更多CentOS相关信息见 专题页面
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