查看linux机器是32位还是64位的方法

1、file /sbin/init 

/sbin/init: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, stripped

如果显示 64-bit 则为64位；

2、file /bin/ls
/bin/ls: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, stripped    

如果显示为64-bit 则为64位；`    

3、uname -a

Linux localhost.localdomain 2.6.32-358.el6.i686 #1 SMP Tue Jan 29 11:48:01 EST 2013 i686 i686 i386 GNU/Linux

i686表示32位机器

x86_64表示64位机器