一、CentOS7系统内核版本

  • cat /proc/version
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[root@OY ~]# cat /proc/version
Linux version 3.10.0-1127.19.1.el7.x86_64 (mockbuild@kbuilder.bsys.centos.org) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC) ) #1 SMP Tue Aug 25 17:23:54 UTC 2020
  • uname -a
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[root@OY ~]# uname -a
Linux OY 3.10.0-1127.19.1.el7.x86_64 #1 SMP Tue Aug 25 17:23:54 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
  • uname -r
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[root@OY ~]# uname -r
3.10.0-1127.19.1.el7.x86_64

二、Linux版本

  • 列出所有版本信息(lsb_release -a)
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[root@OY ~]# lsb_release -a
LSB Version:	:core-4.1-amd64:core-4.1-noarch
Distributor ID:	CentOS
Description:	CentOS Linux release 7.8.2003 (Core)
Release:	7.8.2003
Codename:	Core

注:这个命令适用于所有的linux，包括Redhat、SuSE、Debian等发行版。

  • cat /etc/issue
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[root@localhost ~]# cat /etc/issue

CentOS release 5.5 (Final)

Kernel r on an m
  • cat /etc/redhat-release
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[root@localhost ~]# cat /etc/redhat-release

CentOS release 5.5 (Final)

查看系统是64位还是32位

  • getconf LONG_BIT or getconf WORD_BIT
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[root@localhost ~]# getconf LONG_BIT

64
  • file /bin/ls
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[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
  • lsb_release -a
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[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