0 环境信息

CentOS 7.6.1810(虚拟机)

1 查看内核信息

1. cat /proc/version
cat /proc/version显示运行中的内核版本。

# cat /proc/version
Linux version 3.10.0-957.27.2.el7.x86_64 (mockbuild@kbuilder.bsys.centos.org) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-36) (GCC) ) #1 SMP Mon Jul 29 17:46:05 UTC 2019

2. uname -a
   显示计算机以及操作系统的相关信息。

# uname -a
Linux 10-46-5-230 3.10.0-957.27.2.el7.x86_64 #1 SMP Mon Jul 29 17:46:05 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

2 系统版本命令

1. lsb_release -a
   需要安装lsb

# yum install lsb
# 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 7.6.1810 (Core)
Release:        7.6.1810
Codename:       Core

2. cat /etc/redhat-release(RedHat系列发布版本)

# cat /etc/redhat-release
CentOS Linux release 7.6.1810 (Core)

3 查看CPU信息

cat /proc/cpuinfo

# cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 61
model name      : Intel Core Processor (Broadwell, no TSX)
stepping        : 2
microcode       : 0x1
cpu MHz         : 2194.916
cache size      : 16384 KB
physical id     : 0
siblings        : 1
core id         : 0
cpu cores       : 1
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 syscall nx rdtscp lm constant_tsc rep_good nopl xtopology eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch fsgsbase bmi1 avx2 smep bmi2 erms invpcid rdseed adx smap xsaveopt arat
bogomips        : 4389.83
clflush size    : 64
cache_alignment : 64
address sizes   : 46 bits physical, 48 bits virtual
power management:

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 61
model name      : Intel Core Processor (Broadwell, no TSX)
stepping        : 2
microcode       : 0x1
cpu MHz         : 2194.916
cache size      : 16384 KB
physical id     : 1
siblings        : 1
core id         : 0
cpu cores       : 1
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 syscall nx rdtscp lm constant_tsc rep_good nopl xtopology eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch fsgsbase bmi1 avx2 smep bmi2 erms invpcid rdseed adx smap xsaveopt arat
bogomips        : 4389.83
clflush size    : 64
cache_alignment : 64
address sizes   : 46 bits physical, 48 bits virtual
power management:

4 查看内存信息

cat /proc/meminfo

# cat /proc/meminfo
MemTotal:        1896268 kB
MemFree:          354056 kB
MemAvailable:    1432588 kB
Buffers:            2068 kB
Cached:          1260980 kB
SwapCached:          108 kB
Active:           696112 kB
Inactive:         609936 kB
Active(anon):      99732 kB
Inactive(anon):    50540 kB
Active(file):     596380 kB
Inactive(file):   559396 kB
Unevictable:           0 kB
Mlocked:               0 kB
SwapTotal:        524284 kB
SwapFree:         523508 kB
Dirty:                24 kB
Writeback:             0 kB
AnonPages:         42796 kB
Mapped:            22584 kB
Shmem:            107272 kB
Slab:             165736 kB
SReclaimable:     107952 kB
SUnreclaim:        57784 kB
KernelStack:        3728 kB
PageTables:         5072 kB
NFS_Unstable:          0 kB
Bounce:                0 kB
WritebackTmp:          0 kB
CommitLimit:     1472416 kB
Committed_AS:     300956 kB
VmallocTotal:   34359738367 kB
VmallocUsed:       44664 kB
VmallocChunk:   34359684860 kB
HardwareCorrupted:     0 kB
AnonHugePages:      6144 kB
CmaTotal:              0 kB
CmaFree:               0 kB
HugePages_Total:       0
HugePages_Free:        0
HugePages_Rsvd:        0
HugePages_Surp:        0
Hugepagesize:       2048 kB
DirectMap4k:       63344 kB
DirectMap2M:     2033664 kB