查看系统发行版信息
- 查看LSB (Linux Standard Base)本身的版本信息。
[ray@localhost ~]$ lsb_release -v
LSB Version: :core-3.1-ia32:core-3.1-noarch:graphics-3.1-ia32:graphics-3.1-noarch
- 打印系统发行版的所有信息，比如发行版的ID，描述信息，具体版本，代号：
[ray@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 5.5(Tikanga)
Release: 5.5
Codename: Tikanga
有些系统上不一定安装了这个命令，可以通过查看/etc/issue文件得到发行版信息。
注:centos 7 需要用cat /etc/redhat-release查看
[ray@localhost ~]$ cat /etc/issue
Red Hat Enterprise Linux Server release 5.5(Tikanga)
Kernel \r on an \m
[ray@localhost ~]$ head-1/etc/issue
Red Hat Enterprise Linux Server release 5.5(Tikanga)
[ray@localhost ~]$ uname-r
2.6.18-194.el5
[ray@localhost ~]$ uname-a
Linux localhost 2.6.18-194.el5 #1 SMP Tue Mar 16 21:52:43 EDT 2010 i686 i686 i386 GNU/Linux
[ray@localhost ~]$ cat/proc/version
Linux version 2.6.18-194.el5 (mockbuild@x86-007.build.bos.redhat.com)(gcc version 4.1.2 20080704(Red Hat 4.1.2-48))#1 SMP Tue Mar 16 21:52:43 EDT 2010
查看系统是64位还是32位
uname -m
[ray@localhost ~]$ getconf LONG_BIT
32[ray@localhost ~]$ getconf WORD_BIT
32[ray@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
如果有x86_64就是64位的，没有就是32位的。
下面是64位的 ：
Linux WORKS 2.6.9-11.ELsmp #1 SMP Fri May 20 18:25:30 EDT 2005 x86_64 x86_64 x86_64 GNU/Linux
32位的：
Linux backup 2.6.9-67.ELsmp #1 SMP Wed Nov 7 13:58:04 EST 2007 i686 i686 i386 GNU/Linux
注意：Ixxx的全是32位的，有X86—64的全是64位。可输入uname –m或arch查看。