查看Linux版本（查看内核、查看Linux内核）

查看Linux版本（查看内核、查看Linux内核）

Ubuntu18 查看系统版本:
lsb_release -a
No LSB modules are available.
Distributor ID:    Ubuntu
Description:    Ubuntu 18.04.2 LTS
Release:    18.04

CentOS7

CentOS7 查看系统的版本:
（1）如果想知道当前系统的版本，只需在终端中执行如下命令即可：
cat  /etc/redhat-release
[root@server]# cat  /etc/redhat-release
CentOS Linux release 7.7.1908 (Core)
[root@server]#

[root@server]# cat /etc/issue
\S
Kernel \r on an \m
[root@server]# 

CentOS7 查看内核版本等信息：
uname -a
[root@server]# uname -a
Linux weixuncloud-server-1 3.10.0-1062.18.1.el7.x86_64 #1 SMP Tue Mar 17 23:49:17 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
[root@server]#
[root@server]#

CentOS7 查看32位还是64位：
[root@server]# getconf LONG_BIT
64
You have new mail in /var/spool/mail/root
[root@server]#
[root@server]#

[root@server]# file /bin/ls
/bin/ls: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=aaf05615b6c91d3cbb076af81aeff531c5d7dfd9, stripped
[root@server]#
[root@server]#

CentOS 6.x
[root@LAMP1 config]# cat /etc/issue
CentOS release 6.3 (Final)
Kernel \r on an \m

[root@LAMP1 config]# cat /etc/redhat-release
CentOS release 6.3 (Final)
[root@LAMP1 config]#