Four commands on my pc:
$ dpkg -l |grep linux-image
Linux kernel image for version 3.4.0 on 32 bit x86 SMP
It means my Ubuntu kernel is 32 bits?
$ uname -a
Linux ny 3.4.0-030400-generic #201205210521 SMP Mon May 21 09:22:02 UTC 2012 **x86_64 x86_64 x86_64** GNU/Linux
$ file /bin/ls
/bin/ls: ELF 64-bit LSB executable, **x86-64**, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.24, BuildID[sha1]=0x37cdd635587f519989044055623abff939002027, stripped
$ file /sbin/init
/sbin/init: ELF 64-bit LSB shared object, **x86-64**, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.24, BuildID[sha1]=0x7aa29ded613e503fb09fb75d94026f3256f01e7a, stripped
up 3 commands mean my kernel is 64 bits?
My question: What is my kernel, 32 bits or 64 bits? Thanks.