查看linux系统版本

linux主机

hostnamectl -- 可以查看“系统架构”，“发行版本”和“内核版本”等信息

# centos7/ubuntu20.04
[root@192 ~]# hostnamectl -h
hostnamectl [OPTIONS...] COMMAND ...

Query or change system hostname.

  -h --help              Show this help
     --version           Show package version
     --no-ask-password   Do not prompt for password
  -H --host=[USER@]HOST  Operate on remote host
  -M --machine=CONTAINER Operate on local container
     --transient         Only set transient hostname
     --static            Only set static hostname
     --pretty            Only set pretty hostname

Commands:
  status                 Show current hostname settings
  set-hostname NAME      Set system hostname
  set-icon-name NAME     Set icon name for host
  set-chassis NAME       Set chassis type for host
  set-deployment NAME    Set deployment environment for host
  set-location NAME      Set location for host

# centos7演示
[root@192 ~]# hostnamectl status
   Static hostname: localhost.localdomain
Transient hostname: 192.168.21.131
         Icon name: computer-vm
           Chassis: vm
        Machine ID: 0c9900e6f0874e749114249ca020b0cb
           Boot ID: 9c72c086215742f4afa843d39d964884
    Virtualization: vmware
  Operating System: CentOS Linux 7 (Core)
       CPE OS Name: cpe:/o:centos:centos:7
            Kernel: Linux 3.10.0-1160.102.1.el7.x86_64
      Architecture: x86-64

 uname －a -- 查看内核版本

# centos7/ubuntu
[root@192 ~]# uname --help
用法：uname [选项]...
输出一组系统信息。如果不跟随选项，则视为只附加-s 选项。

  -a, --all			以如下次序输出所有信息。其中若-p 和
				-i 的探测结果不可知则被省略：
  -s, --kernel-name		输出内核名称
  -n, --nodename		输出网络节点上的主机名
  -r, --kernel-release		输出内核发行号
  -v, --kernel-version		输出内核版本
  -m, --machine		输出主机的硬件架构名称
  -p, --processor		输出处理器类型或"unknown"
  -i, --hardware-platform	输出硬件平台或"unknown"
  -o, --operating-system	输出操作系统名称
      --help		显示此帮助信息并退出
      --version		显示版本信息并退出

# centos7演示
[root@192 ~]# uname -a
Linux 192.168.21.131 3.10.0-1160.102.1.el7.x86_64 #1 SMP Tue Oct 17 15:42:21 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

# ubuntu20.04演示
root@ubuntu:~# uname -a
Linux ubuntu 5.4.0-165-generic #182-Ubuntu SMP Mon Oct 2 19:43:28 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

 cat /proc/version -- 查看当前操作系统版本信息

# centos7
[root@192 ~]# cat /proc/version
Linux version 3.10.0-1160.102.1.el7.x86_64 ([email protected]) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC) ) #1 SMP Tue Oct 17 15:42:21 UTC 2023

# ubuntu
root@ubuntu:~# cat /proc/version
Linux version 5.4.0-165-generic (buildd@lcy02-amd64-078) (gcc version 9.4.0 (Ubuntu 9.4.0-1ubuntu1~20.04.2)) #182-Ubuntu SMP Mon Oct 2 19:43:28 UTC 2023

cat /etc/issue ，lsb_release -a（ubuntu）-- 查看系统发行版本
cat /etc/redhat-release（centos）-- 查看系统发行版本

# centos7
[root@192 ~]# cat /etc/redhat-release
CentOS Linux release 7.9.2009 (Core)

# ubuntu 20.04
root@ubuntu:~# cat /etc/issue
Ubuntu 20.04.6 LTS \n \l

root@ubuntu:~# lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 20.04.6 LTS
Release:	20.04
Codename:	focal

 cat /proc/cpuinfo -- 查看cpu信息

# centos7/ubuntu20.4
cat /proc/cpuinfo

docker容器

Ubuntu/Debian系统:

cat /etc/os-release

CentOS/RHEL系统:

cat /etc/redhat-release

Alpine Linux系统:

cat /etc/alpine-release

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