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
