In Linux, check whether the centos version is 32-bit or 64-bit.

View the centos kernel version:

1) [root @ localhost ~] # Cat/proc/version

Linux version 2.6.18-194. EL5 (mockbuild@builder10.centos.org) (GCC version 4.1.2 20080704 (Red Hat 4.1.2-48) #1 SMP Fri APR 2 14:58:14 EDT 2010

2)

[Root @ localhost ~] # Uname-

Linux localhost. localdomain 2.6.18-194. EL5 #1 SMP Fri APR 2 14:58:14 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux

3)

[Root @ localhost ~] # Uname-R

2.6.18-194. EL5

2. view the Linux version:

1) list all version information,

[Root @ localhost ~] # Lsb_release-

LSB version: core-3.1-amd64: core-3.1-ia32: core-3.1-noarch: graphics-3.1-amd64: graphics-3.1-ia32: graphics-3.1-noarch:

Distributor ID: centos

Description: centos release 5.5 (final)

Release: 5.5

Codename: Final

Note: This command applies to all Linux releases, including RedHat, Suse, and Debian.

2) Run CAT/etc/issue, for example:

[Root @ localhost ~] # Cat/etc/issue

Centos release 5.5 (final)

Kernel R on an M

3) Run CAT/etc/RedHat-release, for example:

[Root @ localhost ~] # Cat/etc/RedHat-release

Centos release 5.5 (final)

Check whether the system is 64-bit or 32-bit:

1. getconf long_bit or getconf word_bit

[Root @ localhost ~] # Getconf long_bit

64

2. File/bin/ls

[Root @ localhost ~] # File/bin/ls

/Bin/LS: Elf 64-bit LSB executable, amd x86-64, Version 1 (sysv), for GNU/Linux 2.6.9, dynamically linked (uses SHARED libs ), for GNU/Linux 2.6.9, stripped

3. lsb_release-

[Root @ localhost ~] # Lsb_release-

LSB version: core-3.1-amd64: core-3.1-ia32: core-3.1-noarch: graphics-3.1-amd64: graphics-3.1-ia32: graphics-3.1-noarch:

Distributor ID: centos

Description: centos release 5.5 (final)

Release: 5.5

Codename: Final

In Linux, we need to use the command mode to operate everything. If you want to be proficient in the Linux server, you can take a look at this tutorial, for example, we have used several lines of commands to obtain the system version.