[root@iZbp13nq1pxf5wki525wiuZ ~]# lsb_release -a
LSB Version:	:core-4.1-amd64:core-4.1-noarch
Distributor ID:	CentOS
Description:	CentOS Linux release 7.9.2009 (Core)
Release:	7.9.2009
Codename:	Core

`lsb_release解析`

显示发行版本信息 补充说明 LSB是Linux Standard Base的缩写， lsb_release命令 用来显示LSB和特定版本的相关信息。如果使用该命令时不带参数，则默认加上-v参数。

[root ~]# lsb_release --h
FSG lsb_release v2.0 prints certain LSB (Linux Standard Base) and
Distribution information.

Usage: lsb_release [OPTION]...
With no OPTION specified defaults to -v.

Options:
  -v, --version
    Display the version of the LSB specification against which the distribution is compliant.
  -i, --id
    Display the string id of the distributor.
  -d, --description
    Display the single line text description of the distribution.
  -r, --release
    Display the release number of the distribution.
  -c, --codename
    Display the codename according to the distribution release.
  -a, --all
    Display all of the above information.
  -s, --short
    Use short output format for information requested by other options (or version if none).
  -h, --help
    Display this message.

命令2： `cat /etc/issue`

该命令适用于所有Linux系统，显示的版本信息较为简略，只有系统名称和对应版本号。

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

命令3： `cat /etc/redhat-release`

该命令仅适用于Redhat系列的Linux系统，显示的版本信息也较为简略。

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

2.查看Linux内核版本

命令1： `uname -a`

[root ~]# uname -a
Linux iZbp13nq1pxf5wki525wiuZ 3.10.0-1160.45.1.el7.x86_64 #1 SMP Wed Oct 13 17:20:51 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

命令2： `cat /proc/version`

[root@iZbp13nq1pxf5wki525wiuZ ~]# cat /proc/version
Linux version 3.10.0-1160.45.1.el7.x86_64 (mockbuild@kbuilder.bsys.centos.org) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC) ) #1 SMP Wed Oct 13 17:20:51 UTC 2021

3.查看CPU个数，剩余内存，和磁盘利用

# 剩余内存 [root@iZ6245lpxykZ ~]# free -m total used free shared buffers cached Mem: 1841 1498 342 57 39 526 -/+ buffers/cache: 932 908 Swap: 1024 0 1024 # 查看CPU个数 [root@iZ6245lpxykZ ~]# cat /proc/cpuinfo| grep “processor”| wc -l 1 # 磁盘利用 [root@iZ6245lpxykZ ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/vda1 40G 8.3G 29G 23% / devtmpfs 913M 0 913M 0% /dev tmpfs 921M 1.3M 920M 1% /dev/shm tmpfs 921M 57M 865M 7% /run tmpfs 921M 0 921M 0% /sys/fs/cgroup tmpfs 185M 0 185M 0% /run/user/0

使用lscpu

[root@iZj6c7q37rfjtps4h88ieoZ ~]# cat /proc/cpuinfo| grep "processor"| wc -l
4
[root@iZj6c7q37rfjtps4h88ieoZ ~]# lscpu
Architecture:        x86_64
CPU op-mode(s):      32-bit, 64-bit
Byte Order:          Little Endian
CPU(s):              4
On-line CPU(s) list: 0-3
Thread(s) per core:  2
Core(s) per socket:  2
Socket(s):           1
NUMA node(s):        1
Vendor ID:           GenuineIntel
CPU family:          6
Model:               85
Model name:          Intel(R) Xeon(R) Platinum 8269CY CPU @ 2.50GHz
Stepping:            7
CPU MHz:             2499.998
BogoMIPS:            4999.99
Hypervisor vendor:   KVM
Virtualization type: full
L1d cache:           32K
L1i cache:           32K
L2 cache:            1024K
L3 cache:            36608K
NUMA node0 CPU(s):   0-3
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 nonstop_tsc cpuid tsc_known_freq pni pclmulqdq monitor ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch invpcid_single pti fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx avx512f avx512dq rdseed adx smap avx512cd avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves arat avx512_vnni

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