LINUX如何查看硬件信息

LINUX如何查看硬件信息： 

查看CPU信息（型号） 
# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c 
     8  Intel(R) Xeon(R) CPU           E5405  @ 2.00GHz
(看到有8个逻辑CPU, 也知道了CPU型号) 

# cat /proc/cpuinfo | grep physical | uniq -c 
      1 physical id     : 0
      1 address sizes   : 38 bits physical, 48 bits virtual
      1 physical id     : 1
      1 address sizes   : 38 bits physical, 48 bits virtual
      1 physical id     : 0
      1 address sizes   : 38 bits physical, 48 bits virtual
      1 physical id     : 1
      1 address sizes   : 38 bits physical, 48 bits virtual
      1 physical id     : 0
      1 address sizes   : 38 bits physical, 48 bits virtual
      1 physical id     : 1
      1 address sizes   : 38 bits physical, 48 bits virtual
      1 physical id     : 0
      1 address sizes   : 38 bits physical, 48 bits virtual
      1 physical id     : 1
      1 address sizes   : 38 bits physical, 48 bits virtual
(说明实际上是两颗4核的CPU) 

# getconf LONG_BIT 
   32 
(说明当前CPU运行在32bit模式下, 但不代表CPU不支持64bit) 

# cat /proc/cpuinfo | grep flags | grep ' lm ' | wc -l 
   8 
(结果大于0, 说明支持64bit计算. lm指long mode, 支持lm则是64bit) 


再完整看cpu详细信息, 不过大部分我们都不关心而已. 
# dmidecode | grep 'Processor Information' 

查看内 存信息 

# cat /proc/meminfo 

MemTotal:      4045524 kB
MemFree:        192904 kB
Buffers:        130848 kB
Cached:        3275984 kB
SwapCached:      10076 kB
Active:        3015852 kB
Inactive:       618200 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      4045524 kB
LowFree:        192904 kB
SwapTotal:     6094840 kB
SwapFree:      6054660 kB
Dirty:            1084 kB
Writeback:           0 kB
AnonPages:      225352 kB
Mapped:          20672 kB
Slab:           176908 kB
PageTables:      12684 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:   8117600 kB
Committed_AS:   925016 kB
VmallocTotal: 34359738367 kB
VmallocUsed:    266084 kB
VmallocChunk: 34359472087 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     2048 kB

# uname -a 
Linux localhost.localdomain 2.6.18-238.el5 #1 SMP Thu Jan 13 15:51:15 EST 2011 x86_64 x86_64 x86_64 GNU/Linux
(查看当前操作系统内核信息) 

# cat /etc/issue | grep Linux 
Red Hat Enterprise Linux AS release 4 (Nahant Update 5) 
(查看当前操作系统发行版信息) 

查看机器型号 
# dmidecode | grep "Product Name"  

 Product Name: ProLiant DL380 G5

查看网卡信息 

# dmesg | grep -i eth