Linux系统如何查看版本信息

原文链接：https://www.cnblogs.com/sunshineliulu/p/8984704.html

1、查看当前操作系统内核信息

uname -a

$ uname -a
Linux vm-web 3.10.0-693.21.1.el7.x86_64 #1 SMP Wed Mar 7 19:03:37 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

2、查看当前操作系统版本信息

cat /proc/version

$ cat /proc/version
Linux version 3.10.0-693.21.1.el7.x86_64 (builder@kbuilder.dev.centos.org) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-16) (GCC) ) #1 SMP Wed Mar 7 19:03:37 UTC 2018

3、查看当前操作系统发行版信息

cat /etc/issue 或 cat /etc/redhat-release

$ cat /etc/issue
S
Kernel 
 on an m
 
$ cat /etc/redhat-release
CentOS Linux release 7.4.1708 (Core)

4、查看cpu相关信息，包括型号、主频、内核信息等

cat /proc/cpuinfo

$ cat /proc/cpuinfo
processor    : 0
vendor_id    : GenuineIntel
cpu family    : 6
model        : 45
model name    : Intel(R) Xeon(R) CPU E5-2660 0 @ 2.20GHz
stepping    : 7
microcode    : 0xffffffff
cpu MHz        : 2199.998
cache size    : 20480 KB
physical id    : 0
siblings    : 2
core id        : 0
cpu cores    : 2
apicid        : 0
initial apicid    : 0
fpu        : yes
fpu_exception    : yes
cpuid level    : 13
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology eagerfpu pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt aes xsave avx hypervisor lahf_lm xsaveopt
bogomips    : 4399.99
clflush size    : 64
cache_alignment    : 64
address sizes    : 44 bits physical, 48 bits virtual
power management:
 
processor    : 1
vendor_id    : GenuineIntel
cpu family    : 6
model        : 45
model name    : Intel(R) Xeon(R) CPU E5-2660 0 @ 2.20GHz
stepping    : 7
microcode    : 0xffffffff
cpu MHz        : 2199.998
cache size    : 20480 KB
physical id    : 0
siblings    : 2
core id        : 1
cpu cores    : 2
apicid        : 1
initial apicid    : 1
fpu        : yes
fpu_exception    : yes
cpuid level    : 13
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology eagerfpu pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt aes xsave avx hypervisor lahf_lm xsaveopt
bogomips    : 4399.99
clflush size    : 64
cache_alignment    : 64
address sizes    : 44 bits physical, 48 bits virtual
power management:

5、列出所有版本信息

lsb_release -a

$ lsb_release -a
-bash: lsb_release: command not found

出现command not found说明没安装lsb_realease，可以执行命令yum install -y redhat-lsb安装lsb_realease，安装完成后，版本信息如下：

$ lsb_release -a
LSB Version:    :core-4.1-amd64:core-4.1-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-4.1-amd64:desktop-4.1-noarch:languages-4.1-amd64:languages-4.1-noarch:printing-4.1-amd64:printing-4.1-noarch
Distributor ID:    CentOS
Description:    CentOS Linux release 7.4.1708 (Core)
Release:    7.4.1708
Codename:    Core