关于如何在linux下 查看设备 型号、属性

dmidecode是一个十分有用的工具，它可以全面的显示你系统的信息，包括bios、cpu、内存等信息。目前最新版本为2.9，可以在http://www.nongnu.org/dmidecode/ 下载到。
用dmidecode可以显示非常详细的硬件信息。
另外，还有些小技巧。
比如，显示有几条内存：
[root@localhost dmidecode-2.9]# dmidecode |grep -A12 "Memory Device$"
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 1
Locator: DIMM 01
Bank Locator: Not Specified
Type: SDRAM
Type Detail: Synchronous
Speed: 100 MHz (10.0 ns)
--
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 512 MB
Form Factor: DIMM
Set: 1
Locator: DIMM 02
Bank Locator: Not Specified
Type: SDRAM
Type Detail: Synchronous
Speed: 133 MHz (7.5 ns)
--
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 128 MB
Form Factor: DIMM
Set: 2
Locator: DIMM 03
Bank Locator: Not Specified
Type: SDRAM
Type Detail: Synchronous
Speed: 133 MHz (7.5 ns)
--
Memory Device
Array Handle: 0x1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 128 MB
Form Factor: DIMM
Set: 2
Locator: DIMM 04
Bank Locator: Not Specified
Type: SDRAM
Type Detail: Synchronous
Speed: 133 MHz (7.5 ns)
A12是显示包含关键字的行的后续12行
$是行结束符
还看到一种更简洁的方法—— dmidecode | grep MB 试过就知道了：）
显示CPU的详细信息：
dmidecode |grep -A42 "Processor"|less
查看，主板的序列号
[root@localhost dmidecode-2.9]# dmidecode |grep 'Serial Number'
Serial Number: 5M1AJVQ2C006
Serial Number: 5M1AJVQ2C006
[root@localhost dmidecode-2.9]# dmidecode | grep 'Serial Number' | awk '{print $3}' | tail -1
5M1AJVQ2C006
tail -1表示显示最后一行