Linux系统查看系统是32位还是64位的n种方法

「爱情、让人受尽委屈。」 2022-04-23 07:04 264阅读 0赞

这篇博客是总结、归纳查看Linux系统是32位还是64位的一些方法，很多内容来自网上网友的博客。本篇只是整理、梳理这方面的知识，方便自己忘记的时候随时查看。

**方法1：**getconf LONG\_BIT 查看

如下例子所示： 32位Linux系统显示32， 64位Linux系统显示64。最简单、快捷的方法。

\[root@DB-Server ~\]\# getconf LONG\_BIT

[![clip\_image001][clip_image001]][clip_image001_clip_image001]

\[root@gettestlnx01 ~\]\# getconf LONG\_BIT

[![clip\_image002][clip_image002]][clip_image002_clip_image002]

**方法2：**uname命令查看

如下例子所示，x86\_64表示64位系统， i686 i386表示32位系统。i686 只是i386的一个子集,支持的cpu从Pentium 2 (686)开始,之前的型号不支持.

\[root@DB-Server ~\]\# uname -a

Linux DB-Server 2.6.18-194.el5 \#1 SMP Tue Mar 16 21:52:43 EDT 2010 i686 i686 i386 GNU/Linux

\[root@DB-Server ~\]\# uname -m

i686

[![clip\_image003][clip_image003]][clip_image003_clip_image003]

\[root@gettestlnx01 ~\]\# uname -a

Linux gettestlnx01 3.8.13-16.2.1.el6uek.x86\_64 \#1 SMP Thu Nov 7 17:01:44 PST 2013 x86\_64 x86\_64 x86\_64 GNU/Linux

\[root@gettestlnx01 ~\]\# uname -m

x86\_64

[![clip\_image004][clip_image004]][clip_image004_clip_image004]

**方法3: **arch命令查看

\[root@DB-Server ~\]\# arch

i686

\[root@gettestlnx01 ~\]\# arch

x86\_64

**方法4: **file命令查看

\[root@DB-Server ~\]\# file /sbin/init

/sbin/init: 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

\[root@DB-Server ~\]\#

\[root@DB-Server ~\]\# 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

[![clip\_image005][clip_image005]][clip_image005_clip_image005]

\[root@gettestlnx01 ~\]\# file /sbin/init

/sbin/init: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, stripped

\[root@gettestlnx01 ~\]\#

\[root@gettestlnx01 ~\]\# file /bin/ls

/bin/ls: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, stripped

[![clip\_image006][clip_image006]][clip_image006_clip_image006]

**方法5: **此方法来自于David的博客，通过查看CPU的信息来判定Linux系统是否是64位操作系统。如果结果大于0, 说明支持64bit计算. lm指long mode, 支持lm则是64bit。

\[root@DB-Server ~\]\# cat /proc/cpuinfo | grep flags | grep ' lm ' | wc -l

[![clip\_image007][clip_image007]][clip_image007_clip_image007]

\[root@gettestlnx01 ~\]\# cat /proc/cpuinfo | grep flags | grep ' lm ' | wc -l

[![clip\_image008][clip_image008]][clip_image008_clip_image008]

**参考资料：**

http://www.cnblogs.com/dingchenghong/archive/2012/06/29/2569456.html

http://blog.csdn.net/tianlesoftware/article/details/6267115

http://www.cnblogs.com/JemBai/archive/2012/05/25/2517783.html

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