# uname -a
Linux euis1 2.6.9-55.ELsmp #1 SMP Fri Apr 20 17:03:35 EDT 2007 i686 i686 i386 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)
# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
8 Intel(R) Xeon(R) CPU E5410 @ 2.33GHz
(看到有8个逻辑CPU, 也知道了CPU型号)
# cat /proc/cpuinfo | grep physical | uniq -c
4 physical id : 0
4 physical id : 1
(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)
.
最后再完整看cpu物理信息, 不过大部分我们都不关心而已.
# dmidecode | grep -A48 'Processor Information$'
Processor Information
Socket Designation: CPU 1
Type: Central Processor
Family: Xeon
Manufacturer: Intel
ID: 7A 06 01 00 FF FB EB BF
Signature: Type 0, Family 6, Model 17, Stepping A
Flags:
FPU (Floating-point unit on-chip)
&n
http://www.ibm.com/developerworks/cn/linux/embed/diy/
DIY：自己动手做一个迷你 Linux 系统
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