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