Linux 下查看系统是32位 还是64 位的方法

时间:2022-01-30 01:20:33

 

 

1. 从系统查看

1.1 uname -a 命令

[root@qs-dmm-rh2 ~]# uname -a

Linux qs-dmm-rh2 2.6.18-194.el5 #1 SMP Tue Mar 16 21:52:43 EDT 2010 i686 i686 i386 GNU/Linux

 

[root@qs-xezf-db2 ~]# uname -a

Linux qs-xezf-db2 2.6.18-194.el5 #1 SMP Tue Mar 16 21:52:39 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux

 

 

1.2 file /bin/ls 命令

[root@qs-dmm-rh2 ~]# 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

 

[root@qs-xezf-db2 ~]# 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

 

 

1.3 getconf LONG_BIT 命令

[root@qs-dmm-rh2 ~]# getconf LONG_BIT

32

 

[root@qs-xezf-db2 ~]# getconf LONG_BIT

64

 

1.4 arch命令

[root@qs-dmm-rh2 ~]# arch

i686

 

[root@qs-xezf-db2 ~]# arch

x86_64

 

 

 

 

2. CPU查看

[root@qs-dmm-rh2 ~]# cat /proc/cpuinfo | grep flags | grep ' lm ' | wc -l

0

 

[root@qs-xezf-db2 ~]# cat /proc/cpuinfo | grep flags | grep ' lm ' | wc -l

8

 

结果大于0, 说明支持64bit计算. lmlong mode, 支持lm则是64bit

 

 

有关CPU 的信息,查看我的Blog

       Linux CPU 信息查看

       http://blog.csdn.net/tianlesoftware/archive/2010/10/27/5970500.aspx

 

 

 

 

 

整理自网络

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Blog http://blog.csdn.net/tianlesoftware

网上资源: http://tianlesoftware.download.csdn.net

相关视频:http://blog.csdn.net/tianlesoftware/archive/2009/11/27/4886500.aspx

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