[root@rhel63single kernels]# uname -r
2.6.32-279.el6.x86_64
[root@rhel63single kernels]# uname -a
Linux rhel63single 2.6.32-279.el6.x86_64 #1 SMP Wed Jun 13 18:24:36 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux


[root@rhel63single kernels]# lscpu
Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                4 ----->这是逻辑cpu的个数。
On-line CPU(s) list:   0-3
Thread(s) per core:    1
Core(s) per socket:    1
CPU socket(s):         4
NUMA node(s):          1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 58
Stepping:              9
CPU MHz:               2494.399
BogoMIPS:              4988.79
L1d cache:             32K
L1i cache:             32K
L2 cache:              256K
L3 cache:              3072K
NUMA node0 CPU(s):     0-3
[root@rhel63single kernels]# lsusb  --->lsusb命令显示usb设备的情况。
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 0e0f:0003 VMware, Inc. Virtual Mouse
Bus 002 Device 003: ID 0e0f:0002 VMware, Inc. Virtual USB Hub
Bus 002 Device 004: ID 0e0f:0008 VMware, Inc. 
[root@rhel63single kernels]# lsblk    --->lsblk命令显示块设备的情况。
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sr0     11:0    1   3.4G  0 rom  /media
sda      8:0    0    15G  0 disk 
├─sda1   8:1    0   200M  0 part /boot
├─sda2   8:2    0     2G  0 part [SWAP]
└─sda3   8:3    0  12.8G  0 part /
sdb      8:16   0    20G  0 disk 
└─sdb1   8:17   0    20G  0 part /u02
[root@rhel63single kernels]# lsscsi   --->lsscsi命令显示scsi设备（包括sata，fc，sas，scsi等）的情况。
[1:0:0:0]    cd/dvd  NECVMWar VMware IDE CDR10 1.00  /dev/sr0 
[2:0:0:0]    disk    VMware,  VMware Virtual S 1.0   /dev/sda 
[2:0:1:0]    disk    VMware,  VMware Virtual S 1.0   /dev/sdb