How to tell if the system is a 32-bit or 64-bit Linux system

How to tell if the system is a 32-bit or 64-bit Linux system

A day, need to download an installation package, suddenly forget their system is 32-bit or 64-bit system, the moment can not think how to view when 32 or 64, hehe, under the Baidu, there are many ways to find here, record, convenient for future inquiries:

The first type:

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[Root@CentOS62 ~]# uname-m i686 [Root@436704 ~]# uname-m x86_64

The second type:

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[Root@CentOS62~]# File/sbin/init /sbin/init:elf32-bit LSB SharedObject, Intel80386, version1(SYSV), dynamically linked  (uses shared Libs) , for gnu/linux 2.6.18, stripped Span class= "br0" >[root@436704 ~]< Span class= "co1" ># file/sbin/init /sbin/init:elf 64-bit LSB shared  object, x86-64, version  1  (Sysv, dynamically Linked  (uses gkfx libs) , for  gnu/linux 2.6.18, stripped

The third type:

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[Root@CentOS62~]# File/bin/cat /bin/cat:elf32-bit LSB Executable, Intel80386, version1(SYSV , dynamically linked  (uses shared Libs , for gnu/linux 2.6.18  stripped [root@436704  ~]# file/bin/cat /bin/cat:elf  64-bit LSB executable, x86-64, version < Span class= "nu0" >1  (Sysv, dynamically linked   (uses gkfx libs) , for  Gnu/linux 2.6.18, stripped

The fourth method:

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[Root@436704 ~]# echo $HOSTTYPE x86_64 [Root@CentOS62 ~]# echo $HOSTTYPE I386 ;

Hey, the above methods are very simple, it is a look to know

In fact, there is one of the simplest way, is to see if there is no lib64 this folder, the general 64-bit system must have lib64 this folder, hehe, finally there is a method, it does not look very intuitive, but also introduced:

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[root@436704 ~ # getconf long_bit 64 [root@436704 ~]# getconf word_bit 32 above is 64-bit system ---------------------------------------- [root @CentOS62  ~# getconf long_bit 32 [root@ Centos62 ~]# getconf word_bit 32 above is the 32-bit system, this does not look very intuitive, hehe ...