目录
1.查看Linux系统版本
命令1：lsb_release -a
该命令适用于所有Linux系统，会显示出完整的版本信息，包括Linux系统的名称，如Debian、Ubuntu、CentOS等，和对应的版本号，以及该版本的代号，例如在Debian 8中将会显示代号jessie。
[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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