See if the Linux system version is 32-bit or 64-bit

How to see if the Ubuntu version is 64-bit or 32-bit:

1.# uname-a

If there's a x86_64, it's 64, and there's no 32-bit.

2.# uname-m
x86_64

3.# Arch
X86_6

How to view Ubuntu version number:

1. # lsb_release-a

No LSB modules is available.
Distributor Id:ubuntu
Description:ubuntu 12.04 LTS
release:12.04
Codename:precise

2. # cat/etc/lsb-release

Distrib_id=ubuntu
distrib_release=12.04
Distrib_codename=precise
distrib_description= "Ubuntu 12.04 LTS"

See if the Linux system version is 32-bit or 64-bit