View the centos kernel version:
1) [root @ localhost ~] # Cat/proc/version
Linux version 2.6.18-194. EL5 (mockbuild@builder10.centos.org) (gccversion 4.1.2 20080704 (Red Hat 4.1.2-48) #1 SMP Fri APR 58:14 EDT 2010
2)
[Root @ localhost ~] # Uname-
Linux localhost. localdomain 2.6.18-194. EL5 #1 SMP Fri APR 258:14 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:
Distributor ID: centos
Description:Centos release5.5 (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), forgnu/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:
Distributor ID: centos
Description:Centos release5.5 (final)
Release: 5.5
Codename:Final