查看linux系统及机器硬件信息

 

一、  查看系統版本：

          lsb_release -a

[root@erp-db etc]# lsb_release -a
LSB Version:    :core-3.1-amd64:core-3.1-ia32:core-3.1-noarch:graphics-3.1-amd64:graphics-3.1-ia32:graphics-3.1-noarch
Distributor ID: RedHatEnterpriseServer
Description:    Red Hat Enterprise Linux Server release 5.3 (Tikanga)
Release:        5.3
Codename:       Tikanga
[root@erp-db etc]#

二、  查看內核版本：

         cat /proc/version

[root@erp-db etc]# cat /proc/version
Linux version 2.6.18-128.el5 ([e-mail]) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-44)) #1 SMP Wed Dec 17 11:41:38 EST 2008
[root@erp-db etc]#

三、 查看操作系統位數

        getconf LONG_BIT

[root@erp-db etc]# getconf LONG_BIT
64
[root@erp-db etc]#

四、查看CPU

       cat /proc/cpuinfo | grep -i 'model name'

[root@erp-db etc]# cat /proc/cpuinfo | grep -i 'model name'
model name      : Intel(R) Xeon(R) CPU           E7450  @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7450  @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7450  @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7450  @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7450  @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7450  @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7450  @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7450  @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7450  @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7450  @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7450  @ 2.40GHz
model name      : Intel(R) Xeon(R) CPU           E7450  @ 2.40GHz
[root@erp-db etc]#

       cat /proc/cpuinfo   查看CPU更多信息

 

》》物理cpu个数

$ cat /proc/cpuinfo | grep 'physical id'| sort | uniq | wc -l

2

》》每个物理cpu中core的个数（即核数）

$ cat /proc/cpuinfo | grep 'cpu core'| uniq

cpu cores : 4

 

》》每个物理cpu中逻辑cpu(可能是core、threads或both)的个数

$ cat /proc/cpuinfo | grep 'siblings'| uniq

siblings : 8

 

五、 查看內存

        cat /proc/meminfo

[root@erp-db etc]# cat /proc/meminfo
MemTotal:     24689000 kB
MemFree:      24042044 kB
Buffers:         80424 kB
Cached:         365148 kB
SwapCached:          0 kB
Active:         196404 kB
Inactive:       327084 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:     24689000 kB
LowFree:      24042044 kB
SwapTotal:    26738680 kB
SwapFree:     26738680 kB
Dirty:               0 kB
Writeback:           0 kB
AnonPages:       78012 kB
Mapped:          23072 kB
Slab:            74520 kB
PageTables:       6952 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:  39083180 kB
Committed_AS:   200724 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    276376 kB
VmallocChunk: 34359460455 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB