How to see if the CentOS system is 32-bit or 64-bit?

How to see if the CentOS system is 32-bit or 64-bit?

32-bit system:

[root @localhost  ~]# file/sbin/ Init/sbin/init:elf 32 -bit LSB shared  object, Intel 80386 , version  1  (SYSV), dynamically linked (Uses shared  Libs), Span class= "Hljs-keyword" >for  gnu/linux 2.6 . Stripped[root @localhost  ~]# file/bin/ls/bin/ls:elf 32 -bit LSB executable, Intel 80386 , version  1  (SYSV), dynamically linked (Uses shared  Libs), Span class= "Hljs-keyword" >for  gnu/linux 2.6 . Stripped  

64-bit system:

[Root@localhost]# file/sbin/init/sbin/init:elf --bit LSBsharedObject, x86- -,version 1(SYSV), dynamically linked (usessharedLIBS), forGnu/linux2.6. stripped[root@localhost]# file/bin/ls/bin/ls:elf --bit LSB executable, x86- -,version 1(SYSV), dynamically linked (usessharedLIBS), forGnu/linux2.6. stripped[root@localhost]# Uname-alinux Localhost.localdomain2.6.32-431.EL6.X86_64 #1SMP Fri Nov A 03: the:09 UTC -x86_64 x86_64 x86_64 Gnu/linux

How to see if the CentOS system is 32-bit or 64-bit?