CentOS System View system version, kernel version, number of system bits, number of CPUs, number of cores, number of threads

CentOS View System version

cat/etc/redhat-

1) View the version of the CentOS kernel:

 
[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) Display the system name, the node name, the operating system's release number, the operating system version, the machine ID number

[root@localhost ~]# uname -a  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) display the operating system's release number

[[Email protected] ~] # uname-r
2.6.18-194.el5

To view the Linux version:

1. List all version information,

 
[root@localhost ~]# lsb_release -a  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, including Redhat, SuSE, Debian, and other distributions.

1. Executecat /etc/issue, for example as follows:

 
[root@localhost ~]# cat /etc/issue  CentOS release 5.5 (Final)

Kernel r on an m

1. Executecat /etc/redhat-release, for example as follows:

 
[root@localhost ~]# cat /etc/redhat-release  CentOS release 5.5 (Final)

To see if the system is 64-bit or 32-bit:

[[Email protected] ~] #  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, strippe

3, Lsb_release-a

 
[root@localhost ~]# lsb_release -a  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

CentOS View System CPU number, number of cores, number of threads

1. View the number of physical CPUs

' Physical ID ' /proc/cpuinfo | Sort-u | WC-L 2

2. View the number of cores, that is, the number of cores in each physical CPU (that is, the number of nuclei)

' Core ID ' /proc/cpuinfo | Sort-u | WC-L6

3. View the number of threads (number of logical CPUs)

' Processor ' /proc/cpuinfo | Sort-u | WC-24

4. View the CPU model

Dmidecode-s processor-version

5. View Memory Methods

Grep MemTotal /proc/meminfo

# Total number of cores = Number of physical CPUs X Number of cores per physical CPU
# Total logical CPUs = Physical CPUs X Cores per physical CPU X Hyperthreads

# Viewing the number of physical CPUs
Cat /proc/cpuinfo| grep "physical id"| sort| uniq| wc -l
    2

# View the number of cores in each physical CPU (ie, the number of cores)
Cat /proc/cpuinfo| grep "cpu cores"| uniq
    6

# View the number of logical CPUs
Cat /proc/cpuinfo| grep "processor"| wc -l
   twenty four 

Detailed physical CPU, number of cores, logical CPU description

http://blog.csdn.net/u011630575/article/details/61194094

CentOS System View system version, kernel version, number of system bits, number of CPUs, number of cores, number of threads