How to check Linux version information

系统	发行版本	--	内核版本、位数
RedHat	cat /etc/issue	cat /etc/redhat-release	lsb_release -a
CentOS	cat /etc/issue	cat /etc/centos-release	cat /proc/version
Debian	cat /etc/issue	cat /etc/debian_version	cat /proc/version
Ubuntu	cat /etc/issue	cat /etc/lsb_release	cat /proc/version
Oracle	cat /etc/issue	cat /etc/oracle-release	lsb_release -a

RedHat

Check the system release version

[root@getlnx05 ~]# cat /etc/issue
Red Hat Enterprise Linux Server release 5.7 (Tikanga)
Kernel \r on an \m

You can also find related information through cat /etc/redhat-release.

Check the system kernel version and number of bits

[root@getlnx05 ~]# lsb_release -a
LSB Version:    :core-4.0-amd64:core-4.0-ia32:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-ia32:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-ia32:printing-4.0-noarch
Distributor ID: RedHatEnterpriseServer
Description:    Red Hat Enterprise Linux Server release 5.7 (Tikanga)
Release:        5.7
Codename:      Tikanga

LSB Version item displays the system kernel version, where amd64 indicates that the system is 64-bit of.

CentOS

View the system release version cat /etc/issue

[chenyurong@localhost local]$ cat /etc/issue
CentOS release 6.5 (Final)
Kernel \r on an \m

You can also query the same information through cat /etc/centos-release .

Check the system kernel version and digits more /proc/version

[chenyurong@localhost local]$ cat /proc/version
Linux version 2.6.32-431.el6.x86_64 (mockbuild@c6b8.bsys.dev.centos.org) (gcc version 4.4.7 20120313 (Red Hat 4.4.7-4) (GCC) ) #1 SMP Fri Nov 22 03:15:09 UTC 2013

Linux version 2.6.32-431.el6.x86_64Displays the Linux version,x86_64 Shows a 64-bit system. Relevant information can also be found through uname -r.

Oracle Linux

Check the system release version

[root@DB-Server ~]# cat /etc/issue
Oracle Linux Server release 5.7
Kernel \r on an \m

You can also query related information through cat /etc/oracle-release.

Check the system kernel version and number of bits

[root@DB-Server ~]# lsb_release -a
LSB Version:    :core-4.0-amd64:core-4.0-ia32:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-ia32:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-ia32:printing-4.0-noarch
Distributor ID: EnterpriseEnterpriseServer
Description:    Enterprise Linux Enterprise Linux Server release 5.7 (Carthage)
Release:        5.7
Codename:      Carthage

LSB Version displays the system kernel version, where amd64 indicates that the system is 64-bit .

Summary of applicable scope of all commands

View system release version

##lsb_release -aAll Linux distributions##cat /etc/redhat-releasecat /etc/issueView system kernel bits

# #Command	Applicable scope
RedHat Linux
All Linux Release version

Commanduname -a , uname -rcat /proc/version

Applicable scope
All Linux distributions
All Linux distributions

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